Abstract: In the present invented method, we extract much larger volumes of water from air than traditional AWG systems, (which rely solely upon the Relative Humidity of the Air), by adding organic, water rich, vegetables, fruits or other agricultural produce in the extraction process. Thereby, adding value at the farm level to produce larger volumes of water as well as dry organic produce simultaneously. This process improves the energy efficiency and thereby unit economics of the system, making it viable for commercial utilization
Description:FORM 2
THE PATENT ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
TITLE OF THE INVENTION
A NOVEL METHOD OF MANUFACTURING DRY ORGANIC MATTER AND POTABLE WATER UTILIZING A CLOSED LOOP CONTROLLED ENVIRONMENT CIRCULAR ECONOMY AGRICULTURAL PRODUCTION PROCESS.
APPLICANT (S)
APPLICANT (S)
NAME NATIONALITY COUNTRY OF
RESIDENCE ADDRESS
KHETAR GREEN TECH LLP INDIA INDIA FLAT NO.45/46, 4TH FLOOR, B-WING, AASHIT APARTMENT, 35 AZAD ROAD JUHU SNDT COLLEGE, JUHU KOLIWADA, MUMBAI,
MAHARASHTRA-400049 INDIA
PREMABLE TO THE DESCRIPTION
The following specification particularly describes the nature of the invention and the manner in which it is to be performed.
A NOVEL METHOD OF MANUFACTURING DRY ORGANIC MATTER AND POTABLE WATER UTILIZING A CLOSED LOOP CONTROLLED ENVIRONMENT CIRCULAR ECONOMY AGRICULTURAL PRODUCTION PROCESS.
Field of the Invention
The present invention relates to A NOVEL METHOD OF MANUFACTURING DRY ORGANIC MATTER AND POTABLE WATER UTILIZING A CLOSED LOOP CONTROLLED ENVIRONMENT CIRCULAR ECONOMY AGRICULTURAL PRODUCTION PROCESS. The present invention method is a closed loop production process for production of Wet and Dry Organic matter and Water within a controlled environment.
The invention method shall be used in sustainable, circular economy, controlled environment, closed loop, agriculture and geo-engineering Industries.
Background of the Invention
The world population is predicted to grow from 6.9 billion in 2010 to 8.3 billion in 2030 and to 9.1 billion in 2050. By 2030, food demand is predicted to increase by 50% (70% by 2050). The main challenge facing the agricultural sector is not so much growing 70% more food in 40 years, but making 70% more food available on the plate.
Roughly 30% of the food produced worldwide – about 1.3 billion tons - is lost or wasted every year, which means that the water used to produce it is also wasted. Agricultural products move along extensive value chains and pass through many hands – farmers, transporters, store keepers, food processors, shopkeepers and consumers – as it travels from field to fork.
Producing 1 kilo of rice, for example, requires about 3,500 litres of water, 1 kilo of beef some 15,000 litres, and a cup of coffee about 140 litres. This dietary shift is the greatest to impact on water consumption over the past 30 years.
For example, India faces a serious and persistent water crisis owing to a growing imbalance of supply and demand, as well as poor water resource management and climate change. India is projected to face severe water stress by 2050.
Although industry is the largest contributor to India’s GDP, agriculture accounts for nearly 90% of water use. Two-thirds of India’s irrigation needs and 80% of domestic water needs are met using groundwater, contributing to the significant groundwater depletion rate.
In 2008, the surge of food prices has driven110 million people into poverty and added 44 million more to the undernourished. 925 million people go hungry because they cannot afford to pay for it. In developing countries, rising food prices form a major threat to food security, particularly because people spend 50-80% of their income on food.
The way that water is managed in agriculture has caused wide-scale changes in ecosystems and undermined the provision of a wide range of ecosystem services. The external cost of the damage to people and ecosystems, and clean-up processes, from the agricultural sector is significant. A key understanding from various grass root studies finds that “Agriculture logistics is actually the virtual export of water and not food”!
Agriculture contributes to climate change through its share of greenhouse gases emissions, which in turn affect the planet’s water cycle, adding another layer of uncertainties and risks to food production. It is predicted that South Asia and Southern Africa will be the most vulnerable regions to climate change-related food shortages by 2030.
Solar food drying is used traditionally to preserve and utilise food as and when required across seasons.
Various technical improvements in solar food drying technology have been implemented over the last few decades, however the limitations of the system remain to be the availability of consistent sunlight across the day or the year and the non availability of sunlight in the night, thereby the Solar Food Dryers have a unique problem of maintaining a stable temperature across a 24x365 cycle.
Similarly, we have seen the introduction of Air to water generators (AWG) over the last decade. These AWG have a specific drawback, they are dependent upon and limited to extraction basis the Relative Humidity RH of the ambient air.
In recent years, soilless agriculture has been introduced to third world countries as a solution to optimise agriculture by reducing the cultivation space as well as water to as low as 10% of the required space in soil based agriculture. However the technology yet depends upon ground water and due to high capital expenditure of creating the controlled environment, the unit economics of the crops are not commercially viable.
Our Invention therefore focuses on mitigating the above problems through various technological interventions and strategies to either improve or completely change agricultural practices to achieve highest output at the lowest energy cost:
Sustainable agriculture, focuses on three interactive components: economic profitability, environmental stewardship and social responsibility.
In our invention, economic profitability is achieved by producing three products simultaneously, (1) an edible plant, (2) a dry yet edible plant and (3) water which is extracted from the edible plant, in a synergistic process, while utilising one third of the time which would have been required for producing all the three products separately. In our invention we achieve environmental stewardship by utilising renewable energy as well as only, one third the energy which would have been required for producing all the three products separately.
Thereby achieving commercially viable unit economics, for the products produced.
Circular economy agriculture focuses on using minimal amounts of external inputs, closing nutrients loops, regenerating soils, and minimizing the impact on the environment. If practiced on a wide scale, circular economy agriculture can reduce resource requirements and the ecological footprint of agriculture.
In our invention we achieve Circular economy agriculture by reutilising components of the production to reproduce the agricultural produce with a bare minimum of external inputs.
Controlled Environment Agriculture is a strategy devised to reduce the uncertainty in agricultural production caused by inclement weather conditions, availability of water when required and pestilence, thereby reducing produce and water wastage as well as reducing the economic losses.
In our invention, a plurality of technologies, processes and strategies are used to ensure reduced dependency on various environmental elements which are not available in abundance anymore due to climate change, such as: ground water and energy, as well eliminating the health hazards and soil destruction caused by the use of fertilizers in traditional agriculture.
Closed Loop Agriculture focuses on reproduction, consumption and waste recycling of natural agricultural produce or its components in a continuous loop, ensuring bare minimum external inputs in the process and thereby introduces sustainability and economy in the production.
In our invention, we produce organic plants which are rich in water and nutrients; these plants are harvested once grown and the plants edible components are reintroduced to a water extraction system, which produces a semi dry edible product which can be rehydrated at the consumption point. The extracted water is once again used to produce organic plants, and thereby the cyclic process is called as closed loop agriculture.
Geo-Engineering, focuses on sustainable and responsible manipulation of the atmosphere in order to affect the climate in a way that limits or reverses some of the effects of global warming. The phrase also often refers to the various technologies that are being developed for this purpose, sometimes called “negative emission technologies”.
In our invention, Ground water extraction for agricultural purposes is eliminated, as the system itself generates water from the ambient air as well as by dehydrating the plants grown and harvested within the system itself; Note: Plants grown outside the system can also be introduced into the system to improve the longevity and economic sustainability of those plants.
This process of eliminating the ground water extraction for agriculture and the prevention of the ground water from being exported from a ‘growing’ geography to a ‘consuming’ geography is a method of geo-engineering.
Statement of the Invention
In existing methods of commercially available Air To Water Generator’s, the water generation potential is limited to the extent of Relative Humidity of the Ambient Air. Thereby if the RH is 50% and the temperature is 35°C for a given volume say 1 m3 of Air, the potential availability of water for condensation is 23 gms/m3 (23ml/ m3) of air, however as the RH is 50% the air is holding only 11.5 gms/m3. Which means that the potential capability for condensation is 11.5 gms (11ml). Thereby the effort in terms of energy spent in condensing the water is high and the unit economics of the system are inefficient and need to be improved through various processes and strategies as indicated above.
In the present invented method, we extract much larger volumes of water from air than traditional AWG systems, (which rely solely upon the Relative Humidity of the Air), by adding organic, water rich, vegetables, fruits or other agricultural produce in the extraction process. Thereby, adding value at the farm level to produce larger volumes of water as well as dry organic produce simultaneously. This process improves the energy efficiency and thereby unit economics of the system, making it viable for commercial utilization.
An example being Tomatoes, which grow abundantly, have near 95% water and when dried retain all their natural colours, flavours and nutrients. Such dried tomatoes have a longer shelf life and also higher packing density as well as reduced weight from a logistics perspective, ensuring reduced wastage of the crop during transportation and also lower the cost of transport as the density of tomatoes in the same volumetric are is higher in dry form than in wet form.
Such Dry tomatoes have a proven consumer base for production of multiple forms of ready to cook or eat food products through rehydration at the point of consumption.
This strategic process also ensures that the water used to grow agricultural produce in a specific geography is re-extracted from a closed loop production system, and is not exported to another geography as such export of water leads to depletion of local ground water resources and is thereby uneconomical and also an unsustainable environmental practice, and thereby eliminating the virtual export of ground water.
In the present invention method, we have experimented and created a closed loop system wherein, water is extracted from ambient air basis its relative humidity and additionally extracted from the tomatoes in a simultaneous homogenous process, by heating the air in two stages, wherein in the stage 1 we utilize a Thermoelectric Peltier heat pump powered by a solar PV cell to heat the ambient air, and in the stage 2 utilize Solar thermal heating to reduce the solar electrical energy consumption for efficient economics as well as utilizing the physical characteristics of a Thermoelectric heat pump to generate heat on one surface and simultaneously cool on the other opposite parallel surface, whereby Air is heated on one surface to increase its moisture carrying capacity, introducing such heated Air to a Solar Thermal heating chamber to achieve a stable, constant temperature of 65 to 70°C. This stable hot air is circulated through an additional source of water rich organic material over and above the moisture content already available in the ambient air, thereby increasing the quantum of moisture in the air such that the dew point is reduced and then using the cold surface to condense the air to form water.
Further in the system, the condensate water is utilized for agriculture to grow fresh, water rich, organic vegetables, which are reintroduced to the system to create a closed loop and thereby producing two main products: “Dried Vegetable and Water” with least possible energy consumption and also improving the production capability of the system to generate water economically and purposefully.
As further innovative strategy to reduce the quantum of water required to grow a healthy plant, in the present invention we use sonic energy to crack the generated water into small 5 to 10 micron water particles, such as found in fog or a rain cloud, this water rich fog is directed to the root zone of the soilless agricultural system, where the organic vegetables are produced, ensuring very efficient unit economics as well as water sustainability as only ten (10) % of water is used in comparison to soil based agriculture wherein almost 90% of the water evaporates or runs off where it is wasted.
This invention relates to a contraption for a scalable water generation and low water consumption agricultural system with integrated solar food dryer for growing plants individually with roots physically and fluidly isolated from one another along with a system to dry food items with high moisture content.
Object of the Invention
The main object of the present invention is to replace ground water used for agriculture through extraction of water from air, and utilize the extracted water for agriculture and simultaneously reduce the quantum of water required for agriculture through a closed loop circular economy agricultural manufacturing process. Wherein majority of the raw materials required for the agricultural and water production are produced within the system itself and thereby the manufacturing process is termed as “Closed Loop Agriculture” and as the present invention method reuses the agricultural produce to extract water from it as well as produces dry organic matter which can be reconstituted as edible produce ensuring commercial success through very efficient unit economics it is therefore also termed as “Circular Economy Agriculture”.
BRIEF DESCRIPTION OF THE DRAWINGS
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings,
FIG. 1a Displays the various Process Chambers, components of the system along with the sensors, actuators, Thermoelectric Peltier heat pump and electromechanical dampers which collaborate within the process for successful outcome.
Fig. 1b. Displays the Chamber 2: Solar Thermal heating Chamber, which consists of Interconnected Aluminium Tubes filled with Paraffin wax (Phase Change Material) and refined aluminium powder. The is heated through Solar Thermal radiation and changes its state from solid to liquid and thereafter, when the insolation from the Sun or the hot air from the Chamber 1 is lower than the maximum temperature required to change the phase of the paraffin wax from solid to liquid, the aluminium tubes release the heat stored within as radiation and thus keep heating the Air.
The Tubes are interconnected to each other to form a grid of interconnected trays (ref.:fig.1b), whereby Organic material can be placed on them to dry with the help of circulated hot air. The hot air temperature is maintained at a consistent temperature 24x7, with the help of radiated heat from the aluminium tubes even during night hours or cloudy periods when there is no or very little insolation available.
FIG. 2 Describes the process at various stages for the extraction of water from air and organic produce.
FIG. 3 provides a table explaining the maximum water carrying capacity at a given temperature and clearly indicates the need to heat the Air to increase its moisture carrying potential
Detailed description of the invention
Before explaining the present invention in detail, it is to be understood that the invention is not limited in its application to the details of the construction and arrangement of parts illustrated in the accompanying drawings. The invention is capable of other embodiments, as depicted in different figures as described above and of being practiced or carried out in a variety of ways. It is to be understood that the phraseology and terminology employed herein is for the purpose of description and not of limitation.
Fig.1: Displays the various Process Chambers, components of the system along with the sensors, actuators, Thermoelectric Peltier heat pump and electromechanical dampers which collaborate within the process to successfully enhance:
The water extraction capability over traditional AWG systems.
Organic produce drying capability over traditional Solar Dryers.
Air Heating and condensation process energy efficiency over traditional Solar drying chambers.
Water supply for agricultural production without disturbing the ground water table.
Precision agriculture by introducing (mixing) precise amounts of nutrients with the self-produced water by changing its form from solid to gaseous state (5 to 10 micron) without change in temperature using sonic frequencies.
Directing the nutrient rich gaseous water to the root zone of the plants for precise and optimum water and nutrient supply as required for nutrition rich, human satisfying flavour and colour of the plants.
Fig: 2: Describes the process at various stages for the extraction of water from air and organic produce.
The contraption includes a Thermoelectric Peltier heat pump for cyclically heating a predefined volume of the directed ambient air basis the dimensions of the Air heating chamber. The density of the predefined volume of Air when heated reduces proportionately and thereby the moisture carrying capacity of the predefined volume of heated air increases drastically.
The Drying Chamber 1: scavenges heat from the hot side of the Thermoelectric Peltier Heat Pump. The faster and more the hot side is cooled, the lower the temperature of the cold side. Typically, we can achieve a temperature differential of 70°C between the two sides (Hot/Cold). The two sides are physically insulated from each other to reduce leaching.
It is in general, good energy economy to increase the air temperature in a dryer as much as possible! – The increased moisture transport capacity (carrying capacity) of air at higher temperatures out-weighs the increased energy consumption for heating the air to higher temperature.
Fig.3: provides a table explaining the maximum water carrying capacity at a given temperature and clearly indicates the need to heat the Air to increase its moisture carrying potential:
Chamber 1 process metrics and environmental conditions:
Volume: 4 m3
Ambient Air Temperature: Ta is 35°C
Ambient Air RH: Th is: 20%
Thermoelectric Peltier Heat pump Hot Surface is cooled by circulating 4 m3 of Ambient Air, to reach a temperature of 75°C over a period of 9 minutes +/- 5-10%.
As the air heats up the density of air reduces, and the moisture carrying capacity of Air increases as depicted in the table above.
Moisture holding capacity of Air at 35°C = 40.75 g/m3 at 75°C= 221 g/m3 (0.221 L/m3)
When 1 m3 of air is processed over multiple batches say 40 over a period of 6 hours, we would have displaced 40 m3 of air in 6 hours to produce 297.4*40 = 11,856 ml
Therefore 160 m3 maximum moisture carrying capacity is 30.4 kg or 30.4 Ltrs.
Chamber 1 inlet damper (D1) is kept closed during heating process.
10. D1 is opened once every 9 minutes to let in a fresh batch of 4 m3 of air.
11. Chamber 1 and 2 common locking damper (D2) is kept closed during heating process.
12. The time to raise the temperature of 4 m3 of air from baseline ambient air temperature of 36°C to 75°C is appx. 9 minutes.
To achieve this we use four strategies:
Increase the surface area of the hot surface of the Thermoelectric peltier Heat Pump, by adding more number of Heat pumps in parallel.
Stack multiple heat pumps one above the other, to raise the temperature of exposed surface of the topmost heat pump.
Provide adequate power for pumping the heat from one device surface to another.
Forced circulation of the air on the Hot surface of the Thermoelectric Heat Pump at a very high speed ensuring the resultant rise in temperature within the dedicated time frame of 9 minutes.
D2 is opened to release the heated air to Chamber 2 once every 9 minutes. Note: The total time D2 is kept open is dependent on the Temperature and Humidity sensor readings in chamber 2 and may vary the D1 and D2 open and close cycles by +/- 5 to 10%.
B) Chamber 2 process metrics and environmental conditions:
When the air is further passed through the drying chamber where moisture rich organic material is kept with the objective of evaporative drying. As the Air in the Chamber 1 expands due to heating, and the air in the solar thermal heated Chamber 2 mixes with the Air from Chamber 1, the temperature in Chamber 2 is balanced (averaged) to the desired range of 65 to 85°C, and the relative humidity of air is thereby reduced and the moisture from the organic material is now subject to sufficient tension to release the moisture it is holding and over a period of time releases the moisture through evaporation process, which gets absorbed and retained in the air till the appropriate relative humidity levels and dew point is reached. The drying time of the food material depends on the moisture in it and volumetric flow rate of air. It should be noted that the volumetric flow rate should be maintained such that the air gets sufficient time to absorb the moisture. The drying chamber should be provided with a door to access the organic matter placed or to be taken out.
When the density is reduced and moisture carrying capacity of the predefined volume of Air is increased, such volume of Air is passed through a solar collector chamber: “Chamber 2” which consists of a plurality of perforated trays with organic produce which has a high content of water.
The Solar collector chamber is preheated through solar radiation. However due to natural weather conditions the temperature in the Solar collector chamber keeps varying and thereby to retain a stable temperature it is necessary to introduce a continuous flow of hot air from the Air heating chamber, and also retain a stable minimum temperature across the 24hr operations cycle.
To achieve the same, the Solar collector chamber has a set of Aluminum tubes embedded with a phase change material wich is a combination of Paraffin wax and very purity finely ground particles of Aluminum powder. The melting point of high-grade paraffin wax is between 50-60°C. If mixed with aluminium powder, the useful heat gain and thermal conductivity increases. In absence of solar radiation, (cloudy weather or Night hours when insolation is insufficient or not available), PCM can be utilised to maintain the temperature in drying chamber and utilising the maximum moisture carrying capacity of the air, thereby enabling a continuous operation cycle of 24 hours.
When the heated air is passed from the collector chamber to the drying chamber it absorbs moisture from the water rich organic matter and reaches its saturation humidity limit.
Volume: 4 m3
Ambient Air Temperature in C2: Ta is 75°C
Introduced heated Air RH: Rh1 is: 20%
Existing Ambient Air Temperature Te 65°C
Moisture holding capacity of Air at 35°C = 40.75 g/m3 at 75°C= 221 g/m3
Average Air temperature: Ta achieved over a period of 9 minutes is 70°C
Heated Air at 70°C is circulated in the chamber (C2) using a convection fan at 10 m/s
100 kg of ‘sliced’ Tomatoes are placed in separate perforated trays in a space volume of 4 m3 (sliced to reduce resistance to evaporation due to bonding of water with the tomato matter).
Theoretically 95% of tomato is water. Therefore total water content introduced is 95 Ltrs.
All experiments in the past have shown the maximum drying capacity is 60%; therefore not more than 57 litres of water vapour can be extracted from 100Kg tomato.
In our experiment higher percentage of water collected is that which already existed in the Air.
Total Time of convection drying is 360 minutes to achieve dry matter of water content 60%
That is 19 ltrs of water vapour over 360 minutes
When Chamber 2, Temperature equals 70°C, the D2 is shut
When Chamber 2, RH rises to 39%RH, Chamber 2 and 3 Damper lock (D3) is opened.
Frequency of times D3 is opened: Once every 9 minutes
When D1 is opened D2 remains closed
When D3 is opened D2 is closed
When D2 is opened D1 and D3 are closed
As the name suggests, the drying chamber is the part of the solar dryer, where drying actually takes place. The tray will have quantity of vegetables / fruits / waste organic materials depending upon the desired dry produce and the quantity of water required to be generated basis the maximum carrying capacity of air. Hot air from the solar collector picks up moisture from the exposed surface of the organic matter. The amount of moisture absorbed is controlled either by the amount of moisture released by the organic matter or the amount of moisture that can be held by the air over and above what the air already holds.
The moisture content of organic matter can either be expressed on wet basis or dry basis.
Temperature in the drying chamber = Tfm
Moisture content wet basis = (amount of moisture)/(initial weight of wet mass ) (3.1)
= (Current weight-Dry mass)/(Initial weight of wet mass) (3.2)
We know the wet and dried mass of tomatoes through experiment. Amount of moisture released (Mw,i) can be calculated by subtracting wet and dried mass. During the time of drying, temperature will drop from Tfm to Td. And Mwsd, will be the new saturation water vapour mass at temperature Td.
The actual water vapour mass in the air, post drying process, will be Mw + Mw,i. Mf=Mw+Mw,i (3.3)
RHd=(Mw+Mw,i)/Mwsd*100 (3.4)
Chamber 3: Process metrics and environmental conditions
Cold Side of the thermoelectric contraption
The block diagram of the overall system of the AWG based on TEC is presented in Fig. 1. The study domain, is covered by a dash line that consists of the PWM controller circuit and air fan, an array of Peltier modules, the hot side channel as radiator, the blade valve or Damper to control hot air flow into the condenser and the cold side channel as a condenser.
When the moisture laden air comes in contact with the cool side of the thermoelectric plate it cools down and condenses into water droplets. The amount of water conversion depends on the volumetric flow rate. The water droplets fall on the collector tank which is recycled in the fogponics system and filtered for a plurality of uses. The collector tank contains a vent to release the pressurised moist air inside the container, back into ambient air input channel.
4 m3 of Moisture saturated air (39% RH) from the drying chamber is released into the cold side (<5°C) of the thermoelectric Peltier heat pump Chamber 3, wherein dew point is achieved due to the extreme temperature differential and condenses into water in the collector tank.
a total of 40 x 4 m3 of air with average 39% RH is processed every 360 minutes-cycle for introduction in Chamber 3 over 9 minutes of transit time.
The maximum carrying capacity of water in 160 m3 at 70°C is 30.4 Ltrs
When processed over 360 minutes with a process loss of appx 30% we extracted appx 8.3 Ltrs of water.
As the process is cyclical, we have tested for a period of 24 hours of “insolation time” (4 days) to achieve 33.2 Ltrs of water (33.2 kg) from a potential capability of 508 ltrs (Potential Moisture in ambient air 128 ltrs + Potential moisture of Tomato 380 ltrs from 400 kg tomatoes)
Therefore recorded efficiency is 6%, which is an improvement of 70% over traditional compressor based Air 2 water generators within the same processing time.
Total Dry mass with 30% moisture content produced was 140 Kgs.
Total output 33.2 kg (water) + 140 kg (Dry tomato) = 173.2 kg – 508 kg = - 334.8kg
Therefore further improvement in system is possible upto a further 300 ltrs (Kg) of water.
The air contains water vapour, the amount of mass of water vapour in the air per unit volume depends on the temperature and relative humidity. It is given by:
Mass of water vapour in the air after drying chamber
Mf = Mw+Mw,i…………………………….(4.1)
Theoretical calculation of above experiment, to explain how various physical parameters and conditions when combined can provide the ideal 90+% of water extraction in the shortest duration:
Mass of water vapour calculated from pressure inside the chamber,
x=[0.622e/(Psta-e)]1000 (4.2)
Psta=10132.5 x [293-0.0065EL/293]5.26 (4.3) e=0.6108 exp?[17.27Td/(Td+237.3)] (4.4) Td=237.3[1n(RHd/100)/17.27+(Tfm/(237+Tfm))/1-[1n(RHd/100)/17.27+Tfm/237.3+Tfm] (4.5)
where:
x is concentration of mass (g/m3)
Psta is station pressure (mBar)
EL is elevation above the sea level (m)
e is actual vapour pressure (mBar)
Td is dew point temperature (C)
T is ambient temperature (C)
RH is relative humidity (%).
Moist air flows into the system (D1 to D2 to D3) using a BLDC (Brushless DC) fan with a maximum capacity of 190 CFM. The fan can be operated at 800-2000 RPM and controlled by a PWM (Pulse Width Modulation) circuit module. In this case, assume CFM varies linearly with RPM, the fan capacity related to frequency can be formulated as follows:
Qfreq=0.03 Qmaxf (4.6)
Where:
Qref is a fan capacity related to the PWM frequency (CFM), Qmax is maximum fan capacity, f is frequency (Hz).
The Thermoelectric (TEC) peltier heat pump is powered directly by a 12V DC power supply. The TEC will be pumping heat from the air flowing along the cold side channel and rejecting this heat at the hot side channel of the modules.
Heat rejected into the environment (Qh) required electrical power (Pel) than can be formulated as:
Qh=Pel+Qc (4.7)
For Qc is cooling capacity given by
Qc=(l a Tc)-[1/2(i^2 R) -C(Th-Tc)] (4.8)
where:
I is current (A)
Tc is cold side temperature (K)
Th is hot side temperature (K)
C is thermal conductance between hot and cold side (W/K)
a is Siebeck coefficient (V/K).
The humid air source is supplied to the cold side channel for the condensation process.
Water collected in tank
The water tank is connected to the cold side of one or more thermoelectric contraptions. The purpose is to condense as much water as possible within the limited time and space available within the contraption and avoid wastage of any moisture laden air and get maximum conversion to water. The process works when the evacuated moist air from the hot side of the thermoelectric contraption comes in contact with the cold side of the thermoelectric contraption and condenses to water. The water is further collected and used for agriculture and a plurality of other applications.
According to Equation (4.2), the mass of the water vapour will be increased by increasing the air temperature. Thus, the blade valve is needed to control the airflow into the cold side channel from the excess of air temperature and velocity that can re-evaporate the water grain.
It is possible to improve the collection of moisture by:
Introducing heat retention strategies in the Solar Dryer Chamber 2 by embedding phase change materials in the lining of the Chamber 2 and thereby introducing longer and contiguous process cycle’s of 24 hours. Phase change materials (PCMs) can be used for thermal heat storage during natural insolation (sunlight) period of the day. It possesses a considerable heat of fusion and can be used as latent heat storage and release units.
PCMs are available in the temperature range of 0 to 150 °C, e.g. Paraffin wax which would store thermal energy in the form of latent heat when exposed to solar insolation. This thermal energy can be stored and used in absence of sunlight that is during the dark hours. Experiments have stated that melting was dominated by heat conduction followed by free convection.
Overall improvement in water generation is about 4x due to the increased period (6 hour to 24 hours of operations in a single day vis a vis 6 hours over 4 days) of hot air generation in the absence of solar insolation as well as maintaining stable temperature in the heating chamber.
Ambient Humidity range in majority of the Agriculture belt in India or other coastal countries is typically 40% average across the year versus the experimental ambient conditions carried out by us. This provides the ability to improve moisture collection by an additional 10 % (basis the temperature and humidity constraints of the geography where our experiment was conducted).
Another strategy to improve the moisture conversion to water, is by doubling the size of the cold air chamber and thereby resting time for condensation, theoretical calculations provide > 4x increase in the water collection.
Thereby there is potential to practically improve water collection by 9x along with a reduction in duration of process from 4 days to 1 day (24 hours). Effectively increasing water extraction to 232.4 Ltrs (process leakages within the system are considered), out of a total potential of 508 litres, thereby increasing efficiency from 6% to 54%.
The experimental system size was limited to sequential injection of appx. 4 m3 of Air to process 100 Kg of tomatoes over cycles of 360 minutes each. In commercial facility, such as an agricultural farm, where space is not a restriction, a 10000 m3 (or even greater) of Air processing system which can process a few tons of organic material every 24 hours is practically viable.
While, the invention has been described with respect to the given embodiment, it will be appreciated that many variations, modifications and other applications of the invention may be made. However, it is to be expressly understood that such modifications and adaptations of the present invention, as set forth in the following claims are for the purpose of description and not limitations.
, C , C , Claims:We Claims:
1) A method of manufacturing a combined Solar PV and Solar Thermal energy synergistic process plant to extract water from air and from water rich organic materials simultaneously.
2) A method of manufacturing as claimed in claim 1 wherein a simultaneous heating and cooling of air in a synergistic process plant by combining a Solar PV powered Thermo electric generator’s (TEG) and Solar Thermal heater’s physical properties
a) Side A of the TEG emits heat pumped by extracting heat from side B (when energised by a Solar PV module);
b) Extracted heat on side A is used to heat the ambient air to increase its water carrying capacity;
c) Heated Air is further introduced to the Solar thermal heating chamber to store thermal energy within a phase change material and utilising its radiated heat to stabilise and average the Air temperature to the desired level basis the organic material which is being treated and the desired quality and specification outcome of the dried organic material to be prepared, and to achieve energy efficiency;
d) Improving the efficiency of the phase change material, Paraffin wax, by mixing high purity, fine particles of aluminium powder and encasing the same in Aluminium tubes, Wherein a collection of equally spaced Aluminium tubes are installed within the Solar Thermal heating Chamber 2, and the Aluminium tubes also act as holding and air circulation trays for the organic materials;
e) Heated Air with increased water carrying capacity is further circulated around the water rich Organic matter to extract through a thermal evaporation and dehydration process and hold the evaporated water in the heated air to its peak carrying capacity;
f) The moisture rich hot air is introduced to the cold side of the TEG to achieve dew point and thereby condensation due to the temperature differential and collection in water tank for further application in the system;
g) Moisture rich hot air volume, which is not condensed due to the time limited processing, is further reintroduced to the ambient air inlet, to ensure reduced leakage of extracted water from the organic materials and thereby enhance the temperature and humidity of the ambient air in a closed loop process.
3. A method of manufacturing as claimed in claim 1 wherein contiguous and synergistic, “Closed Loop”, “Controlled Environment Agriculture”’ through processing of ambient Air and organic materials
a. heating ambient air
b. extraction of water from organic materials
c. production of dry organic materials
d. condensation of water from air
e. production and collection of condensed water
f. Utilising the produced water for growing new organic materials in a soilless agricultural system
g. Reintroduction of organic materials grown in a soilless medium, utilising the system extracted water, for further water extraction and dry organic matter production
h. Circulating the water rich air which was not condensed within the time limited period by injecting the same back into the Ambient air inlet point.
4. A method of manufacturing as claimed in claim 1 wherein for improving economic profitability is achieved by producing three products simultaneously, (1) an edible plant, (2) a dry yet edible plant and (3) water which are extracted from the edible plant, in a synergistic process, while utilising one third of the time which would have been required for producing all the three products separately.
5. A method of manufacturing as claimed in claim 1 wherein to achieve environmental stewardship by utilising renewable energy as well as only one third the energy which would have been required for producing all the three products separately.
6. A method of manufacturing as claimed in claim 1 wherein to Increasing the potential water carrying capacity of air and extracting the same by insitu processing of water rich organic matter along with the relative humidity already present in ambient air and thereby improving the air to water generation capacity many fold over time and without the limitation of the RH of the ambient air itself.
7. A method of manufacturing as claimed in claim 1 wherein increasing the potential life of organic materials by dehydration and extraction of water from the organic material for reuse in a synergistic sustainable process.
8. A method of manufacturing as claimed in claim 1 wherein reducing ground water depletion by eliminating the use of ground water for agriculture, by recovering water from organic materials in a closed loop, controlled environment agriculture production system.
9. A method of manufacturing as claimed in claim 1 wherein a sustainable method of Geoengineering, by elimination of ground water use in agriculture, through sustainable energy utilisation for extracting water from air and organic materials contiguously and synergistically, thereby creating an opportunity for increased ground water table height over a period of time through natural intervention.
10. A method of manufacturing as claimed in claim 1 wherein to achieve circular economy agriculture by manufacturing a agricultural produce, growing and processing system, which eliminates waste, reduces logistics cost, reutilises its own produced components such as water to achieve a circular, closed loop, energy efficient and economically sustainable technology.
11. A method of manufacturing as claimed in claim 1 wherein reducing the virtual export of water from a Organic material ‘Production’ geography to a ‘Consumption’ geography, to achieve:
a) Ground Water stability and arability;
b) Economic Viability of agriculture produce, by eliminating costly weather controlled food storage facility;
c) Achieving higher price for agriculture produce through reduced cost of input raw materials and energy efficiency;
d) Achieving higher price for agriculture produce by reducing wastage through over ripening and rotting of improperly stored or limited shelf life of the agriculture produce;
e) Improving the economic sustainability of farmers, by improving the value of the organic materials produced by them and improving the gross margins by reducing the cost of logistics and storage;
f) Reducing environmental pollution by improving the efficiency of agricultural produce logistics.
| # | Name | Date |
|---|---|---|
| 1 | 202321003975-ABSTRACT [15-05-2024(online)].pdf | 2024-05-15 |
| 1 | 202321003975-STATEMENT OF UNDERTAKING (FORM 3) [20-01-2023(online)].pdf | 2023-01-20 |
| 2 | 202321003975-CLAIMS [15-05-2024(online)].pdf | 2024-05-15 |
| 2 | 202321003975-PROOF OF RIGHT [20-01-2023(online)].pdf | 2023-01-20 |
| 3 | 202321003975-POWER OF AUTHORITY [20-01-2023(online)].pdf | 2023-01-20 |
| 3 | 202321003975-DRAWING [15-05-2024(online)].pdf | 2024-05-15 |
| 4 | 202321003975-FORM FOR STARTUP [20-01-2023(online)].pdf | 2023-01-20 |
| 4 | 202321003975-FER_SER_REPLY [15-05-2024(online)].pdf | 2024-05-15 |
| 5 | 202321003975-OTHERS [15-05-2024(online)].pdf | 2024-05-15 |
| 5 | 202321003975-FORM FOR SMALL ENTITY(FORM-28) [20-01-2023(online)].pdf | 2023-01-20 |
| 6 | 202321003975-FORM 1 [20-01-2023(online)].pdf | 2023-01-20 |
| 6 | 202321003975-FER.pdf | 2023-12-28 |
| 7 | 202321003975-FIGURE OF ABSTRACT [20-01-2023(online)].pdf | 2023-01-20 |
| 7 | 202321003975-CERTIFIED COPIES TRANSMISSION TO IB [25-05-2023(online)].pdf | 2023-05-25 |
| 8 | 202321003975-EVIDENCE FOR REGISTRATION UNDER SSI(FORM-28) [20-01-2023(online)].pdf | 2023-01-20 |
| 8 | 202321003975-Covering Letter [25-05-2023(online)].pdf | 2023-05-25 |
| 9 | 202321003975-EVIDENCE FOR REGISTRATION UNDER SSI [20-01-2023(online)].pdf | 2023-01-20 |
| 9 | 202321003975-Form 1 (Submitted on date of filing) [25-05-2023(online)].pdf | 2023-05-25 |
| 10 | 202321003975-DRAWINGS [20-01-2023(online)].pdf | 2023-01-20 |
| 10 | 202321003975-FORM28 [25-05-2023(online)].pdf | 2023-05-25 |
| 11 | 202321003975-DECLARATION OF INVENTORSHIP (FORM 5) [20-01-2023(online)].pdf | 2023-01-20 |
| 11 | 202321003975-Power of Attorney [25-05-2023(online)].pdf | 2023-05-25 |
| 12 | 202321003975-COMPLETE SPECIFICATION [20-01-2023(online)].pdf | 2023-01-20 |
| 12 | 202321003975-Request Letter-Correspondence [25-05-2023(online)].pdf | 2023-05-25 |
| 13 | 202321003975-FORM 18 [23-03-2023(online)].pdf | 2023-03-23 |
| 13 | Abstract1.jpg | 2023-03-17 |
| 14 | 202321003975-FORM-9 [23-03-2023(online)].pdf | 2023-03-23 |
| 15 | 202321003975-FORM 18 [23-03-2023(online)].pdf | 2023-03-23 |
| 15 | Abstract1.jpg | 2023-03-17 |
| 16 | 202321003975-COMPLETE SPECIFICATION [20-01-2023(online)].pdf | 2023-01-20 |
| 16 | 202321003975-Request Letter-Correspondence [25-05-2023(online)].pdf | 2023-05-25 |
| 17 | 202321003975-Power of Attorney [25-05-2023(online)].pdf | 2023-05-25 |
| 17 | 202321003975-DECLARATION OF INVENTORSHIP (FORM 5) [20-01-2023(online)].pdf | 2023-01-20 |
| 18 | 202321003975-FORM28 [25-05-2023(online)].pdf | 2023-05-25 |
| 18 | 202321003975-DRAWINGS [20-01-2023(online)].pdf | 2023-01-20 |
| 19 | 202321003975-EVIDENCE FOR REGISTRATION UNDER SSI [20-01-2023(online)].pdf | 2023-01-20 |
| 19 | 202321003975-Form 1 (Submitted on date of filing) [25-05-2023(online)].pdf | 2023-05-25 |
| 20 | 202321003975-Covering Letter [25-05-2023(online)].pdf | 2023-05-25 |
| 20 | 202321003975-EVIDENCE FOR REGISTRATION UNDER SSI(FORM-28) [20-01-2023(online)].pdf | 2023-01-20 |
| 21 | 202321003975-CERTIFIED COPIES TRANSMISSION TO IB [25-05-2023(online)].pdf | 2023-05-25 |
| 21 | 202321003975-FIGURE OF ABSTRACT [20-01-2023(online)].pdf | 2023-01-20 |
| 22 | 202321003975-FER.pdf | 2023-12-28 |
| 22 | 202321003975-FORM 1 [20-01-2023(online)].pdf | 2023-01-20 |
| 23 | 202321003975-FORM FOR SMALL ENTITY(FORM-28) [20-01-2023(online)].pdf | 2023-01-20 |
| 23 | 202321003975-OTHERS [15-05-2024(online)].pdf | 2024-05-15 |
| 24 | 202321003975-FER_SER_REPLY [15-05-2024(online)].pdf | 2024-05-15 |
| 24 | 202321003975-FORM FOR STARTUP [20-01-2023(online)].pdf | 2023-01-20 |
| 25 | 202321003975-POWER OF AUTHORITY [20-01-2023(online)].pdf | 2023-01-20 |
| 25 | 202321003975-DRAWING [15-05-2024(online)].pdf | 2024-05-15 |
| 26 | 202321003975-PROOF OF RIGHT [20-01-2023(online)].pdf | 2023-01-20 |
| 26 | 202321003975-CLAIMS [15-05-2024(online)].pdf | 2024-05-15 |
| 27 | 202321003975-STATEMENT OF UNDERTAKING (FORM 3) [20-01-2023(online)].pdf | 2023-01-20 |
| 27 | 202321003975-ABSTRACT [15-05-2024(online)].pdf | 2024-05-15 |
| 1 | SS34E_12-12-2023.pdf |