DESC:FIELD OF THE INVENTION

The present invention in general relates to a portable shelter for human occupancy in high altitude regions. Particularly, the present invention provides a portable and ecofriendly shelter which is easy to assemble, dismantle and able to accommodate large number of people.

BACKGROUND OF THE INVENTION

Maintaining liveable temperatures within a shelter and managing water supply and sanitation in high altitudes regions is a challenge. At high altitude regions, climatic conditions are extreme such as high temperature variations, precipitation mostly in the form of snow, less oxygen availability, high wind velocity, low humidity and rugged and uneven terrain. These extreme climatic conditions often affect the life of the people residing in these areas and acts as deterrent to physical and mental performance. Accordingly, various shelters are being considered or built keeping in mind of these load conditions wherein non-renewable fuel sources are being used to maintain the temperature of the shelter and for melting ice or snow etc. However, the use of the non-renewable sources is not only costlier but is even harmful for the health of those around and the environment as it generates carbon mono oxide. Some of the existing prior arts have attempted to construct a shelter are disclosed below.

US6199572 describes a shelter for army. The document describes that shelter can construct quickly and may be used in situation of disaster- relief. However, the document states that parts of shelter are difficult to transport, therefore is not suitable for high altitude.

WO2013122743A1 describes a portable shelter for sheltering materials or human occupants at a remote location. The shelter comprises a flexible cover; and a frame for supporting the flexible cover. The frame includes first and second hinged members for supporting a first side and then a second side of the shelter. However, the shelter/tent does not provide insulation to survive in cold climatic conditions.

3523/DEL/2014 describes a shelter for high altitude regions wherein the shelter involves the utilization of Multi transformation Phase Change Material (MTPCM) which helps in maintaining a suitable temperature inside the shelter.

While numerous studies and reports advocate for the construction of shelters in high-altitude regions, existing solutions often suffer from limitations such as bulky structures, reliance on non-renewable energy sources, non-availability of proper sanitation facilities and inadequate heating capabilities, especially in sub-zero temperatures at high altitudes. Furthermore, some of the existing shelters are based on greenhouse effect which are less efficient especially high-altitude locations and are inefficient in maintaining indoor temperature up to 10oC -15oC which is desired for human occupancy. Also, proper space utilization for sleeping and living zone are not properly addressed in the existing shelters. Yet another concern in the prior art is that requirement of effective ventilation system for maintaining indoor air quality is important. Since the air outside is cold and dry and also the availability of the oxygen at higher altitudes is the major concern. Suffocation and other health related issues are caused due to the above challenges.

Recognizing these shortcomings, there is a critical need for a shelter that can overcome these challenges and thrive in extreme conditions. Accordingly, the present invention addresses these issues and provides a portable shelter which not only mitigates the drawbacks associated with conventional constructions but also prioritizes portability, environmental sustainability, and resilience in the face of harsh climates.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

These and other features, aspect, and advantages of the present invention will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein the device and process and digester configurations described in the present invention are explained in more detail with reference to the following drawings:

Figure 1 illustrates the external schematic view of the shelter.

Figure 2 illustrates the internal view of the shelter.

Figure 3 illustrates the schematic plan of the shelter from the top.

Figure 4 illustrates schematic plan pedestal.

Figure 5 illustrates the comparison of experimental and numerical shelter temperature with respect to ambient temperature during day and night under stagnation condition.

While the invention is described in conjunction with the illustrated embodiment, it is understood that it is not intended to limit the invention to such embodiment. On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention disclosure as defined by the claims.

SUMMARY OF THE INVENTION
This summary is provided to introduce a selection of concepts, in a simplified format, that are further described in the detailed description of the invention. This summary is neither intended to identify key or essential inventive concepts of the invention and nor is it intended to determine the scope of the invention.
In an aspect of the present invention, there is provided a portable shelter (7) for high altitude regions comprising:
a stainless-steel structure comprising a base ring, plurality of rafters (8) and purlins (16) assembled to form an offset gothic shape;

an external roof structure comprising plurality of solar photovoltaic panels (1) with plurality of evacuated tube collectors (6) connected to air heat exchangers;

composite walls (2) comprising plurality of insulating layers with latching provision for leakage-proof joints; and

a base structure comprising self-insulating fiber reinforced plastic base pedestals (12) encasing a heat bank, a diffuser (18), a bio-digester (21), and storage space (10 and 19).

In an embodiment of the present invention, there is provided a portable shelter (7), wherein the composite walls (2) comprises layers of expanded polyurethane foam, aerogel, and glass wool.

In another embodiment of the present invention, there is provided a portable shelter (7), wherein the shelter (7) is provided with metallic cadders placed on the rafters for fixing insulating walls (2).

In yet another embodiment of the present invention, there is provided a portable shelter (7), wherein the heat bank comprises Phase Change Materials (PCM) filled stainless steel stacks with inserts placed at least inside one pedestal.

In still another embodiment of the present invention, there is provided a portable shelter (7), wherein the shelter (7) comprises at least two pedestals forming a bio-digester (12), at least one pedestal for heat storage, one pedestal for battery storage, and four pedestals for general storage.

In an embodiment of the present invention, there is provided a portable shelter (7), wherein the shelter (7) further comprises at least one regular entry/exit door (4), a sliding door separating the living zone (20) and buffer zone (14), and an emergency door.

In another embodiment of the present invention, there is provided a portable shelter (7), wherein the living zone (20) comprises walls having reflector films, plurality of foldable beds (13), and at least one Energy Recovery Ventilator (ERV) for carbon dioxide/oxygen (CO2/O2) control.
In yet another embodiment of the present invention, there is provided a portable shelter (7), wherein the shelter (7) further comprises overhead passive warm water tank (9) and a toilet (11) placed inside the shelter.

In still another embodiment of the present invention, there is provided a portable shelter (7), wherein the evacuated tube collectors (6) is connected to a phase change materials (PCM) box (12) placed under the base pedestal (12) for regulating thermal heating into the living zone (20).

In an embodiment of the present invention, there is provided a portable shelter (7), wherein the shelter (7) further comprises a thermostat controller regulating valves and fans for automatic temperature control.

These and other features, aspects, and advantages of the present subject matter will be better understood with reference to the following description. This summary is provided to introduce a selection of concepts in a simplified form.

DETAILED DESCRIPTION OF THE INVENTION

Those skilled in the art will be aware that the present disclosure is subject to variations and modifications other than those specifically described. It is to be understood that the present disclosure includes all such variations and modifications. The disclosure also includes all such steps of the process, features of the invention, referred to or indicated in this specification, individually or collectively, and any and all combinations of any or more of such steps or features.

Definitions
For convenience, before further description of the present disclosure, certain terms employed in the specification, and examples are collected here. These definitions should be read in the light of the remainder of the disclosure and understood as by a person skilled in the art. The terms used herein have the meanings recognized and known to those of skill in the art, however, for convenience and completeness, particular terms and their meanings are set forth below.

The articles “a”, “an” and “the” are used to refer to one or to more than one (i.e., to at least one) of the grammatical object of the article. The terms “comprise” and “comprising” are used in the inclusive, open sense, meaning that additional elements may be included. It is not intended to be construed as “consists of only”. Throughout this specification, unless the context requires otherwise the word “comprise”, and variations such as “comprises” and “comprising”, will be understood to imply the inclusion of a stated element or step or group of elements or steps but not the exclusion of any other element or step or group of elements or steps.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the disclosure, the preferred methods and materials are now described. All publications mentioned herein are incorporated herein by reference. The present disclosure is not to be limited in scope by the specific embodiments described herein, which are intended for the purposes of exemplification only. Functionally equivalent products and methods are clearly within the scope of the disclosure, as described herein.
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

While the invention is susceptible to various modifications and/or alternative adaptations, specific embodiments thereof has been shown by way of examples and will be described in detail below. However, it should be understood, that it is not intended to limit the invention to the particular structural arrangement disclosed, but on the contrary, the invention is to cover all modifications, structural adaptations and alternative falling within the spirit and the scope of the invention as defined herein.

The present invention provides a shelter for high altitude regions. Particularly, the present invention provides a portable and eco-friendly lightweighted shelter. The eco-friendly shelter disclosed in the present invention is not only easy to assemble and transport but is also specifically engineered to withstand the rigors of extreme high-altitude environments, where sub-zero temperatures pose a significant challenge.
The shelter disclosed in the present invention is self-sustaining that can maintain indoor temperatures up to 10oC -15oC with adequate air quality which is lifesaving especially in cold climatic conditions at higher altitudes. The shelter can conveniently function efficiently in up to -40° Celsius and is able to sustain wind speed up to 190 km/hour. The shelter described herein has an accommodation capacity for 4 people. If required, the shelter can be redesigned, readjusted, and extended to accommodate a large number of people such as 20-25. The framework of the shelter is made up of high-tension metal that can endure high pressure and force, making it safe even in extremely windy regions. Furthermore, keeping in mind that the heating shelter is essentially required in colder and/or at higher altitude regions, the shelter is engineered to withstand heavy snow loads. All aspects and components of this shelter is low maintenance and with high durability. Furthermore, the shelter can be easily dismantled and reassembled. Moreover, as each of the dismantled pieces would weigh under 25kg and accordingly, total weight within would be under 800kg (making it lightweight), convenient and easily transportable.

Thus, in accordance with the present invention there is provided a portable shelter (7) for high altitude regions comprising:
a stainless-steel structure comprising a base ring, plurality of rafters (8) and purlins (16) assembled to form an offset gothic shape;

an external roof structure comprising plurality of solar photovoltaic panels (1) with plurality of evacuated tube collectors (6) connected to air heat exchangers;

composite walls (2) comprising plurality of insulating layers with latching provision for leakage-proof joints; and

a base structure comprising self-insulating fiber reinforced plastic base pedestals (12) encasing a heat bank, a diffuser (18), a bio-digester (21), and storage space (10 and 19).

Figure 1 is a portable shelter that is constructed in accordance with a preferred embodiment of the present invention. Figure 1 illustrates the external schematic view of the shelter (7). The roof of the shelter comprises plurality of solar PV panel (1) of 2.5 kw which provides the basic electricity needs such room lighting and charging of electronic items etc. The top of the frame is locked with the help of connector bolts. The entire shelter is covered with insulated fabric (2) i.e., a layer of composite cloth material, from all sides top, east, west, and north. To cover the anchor bolt and for better insulation, a layer of velcro system (3) is also introduced on the top of the transparent fabric. The shelter has a door (4) for entry and exit to/from shelter and small emergency door which opens independently of the main door, for exiting shelter in case the main door is being blocked by snow and further connected with stairs (5). Furthermore, the figure also depicts the Evacuated Tube Collectors ETC (6) for the conversion of solar energy.

The shelter of the present invention comprises a structure of gothic shape chosen to provide maximum space at the base and minimum at the top to minimize the shelter space, since the minimum area cause minimum heat loss. The skeleton of the shelter comprises solid frames made up of stainless steel (SS) with FRP cladding to provide better strength, elasticity, and aesthetic look. The interconnection of the base ring, rafter (8), purlin (16), and v-connectors utilizes fitting blocks and nut bolts which helps in the assembly. In the present shelter, a fully controlled environment for the human being is maintained by maintaining the shelter temperature and quality of the air inside the shelter.

In a preferred embodiment of the present invention, there is provided a portable shelter, wherein the composite walls (2) comprises layers of expanded polyurethane foam, aerogel, and glass wool. The shelter of the present invention comprises insulating walls wherein the wall is a composite wall (2), made up of several layers of EPUF, Glass-wool and Aerogel. This composite wall fabric is made up of insulating materials, thereby reducing the maximum amount of heat transfer through the wall of the shelter.

Figure 2 herein described in the specification illustrates the internal view of the shelter. In the figure, (8) depicts metallic rafter creating solid structure and supports the shelter cover (2), (9) depicts a warm water tank kept over head in the buffer zone in shelter (7) on top of the storage section (10), (10) depicts an overhead storage section for storing the basic amenities and it is accessible from the leaving zone, (11) depicts washroom/toilet room integrated with biodegradable biodigester, (12) depicts FRP based conical pedestal providing the base foundation to the shelter, (13) depicts foldable bunk beds that can be used for sleeping or seating comfortably and (14) depicts floor of the shelter rests on the pedestal. In the figure, (15) depicts an insulated recirculation hose pipe that is used to maintain the room temperature by regulating the air flow circulation. The recirculation pipe also serves as the cold air inlet to the solar collector. Through the 3-way valve to direct air flow through the collector and to the PCM box and (16) depicts purlins, which is the structural member which horizontally connects all the rafter through simple fastener increasing the strength to the rigidly compact structure, and (17) depicts the outlet hot pipe of the solar collector/heat exchanger (6). The 2-way valve allows the hot air flow into the room and to the PCM box.

In a preferred embodiment of the present invention, there is provided a portable shelter, wherein the shelter (7) is provided with metallic cadders placed on the rafters for fixing insulating wall (2). Particularly, the shelter uses a “Cadder fixing mechanism” in its interlocking metallic framework, which makes assembly and dismantling of the shelter significantly easy to handle. The cadder fixing mechanism basically involves long aluminum “Cadders” or sliders designed into the exterior framework. These sliders or cadders facilitate easy sliding down of the thick composite fabric. The metallic cadders are fixed on the rafter so that the fabric strips slide down through the cadders and then firmly covered with velcro material (3) for finishing and proper insulation. Due to the use of this mechanism, the erection time of the shelter has been reduced by several hours. Furthermore, the insulated composite walls (2) with latching arrangements are used to avoid heat leakage through the joints.

Figure 3 described herein in the specification illustrates the schematic plan of the shelter from the top. In the figure, living zone (20) and buffer zone (14) is separated by the sliding door. The toilet area/bathroom (11) connected with biodigester, store space (19) and bunk bed (13) in the living zone (20) are depicted. The diffuser (18) is placed at the center of the shelter base plane, in between the middle of the beds, to transfer heat equally in all the directions.

Figure 4 described herein in the specification illustrates the schematic plan pedestal. The pedestal schematic blocks are interlocked at the edges without any requirements of fasteners. The (A) and (D) block of the pedestal has bio-digester (21) to take care of the sanitization facilities. Block (E) and (F) of the pedestal contains the PCM box (22) in which the PCM are stacked. At the center of the (E) block, the diffuser (18) is installed to regulate the hot air into the shelter.

The shelters described herein are based on thermal energy storage system (TESS). TESS is used to store heat energy in the form of latent heat or specific heat. Compared to sensible heat storage system, a phase-change material (PCM) can store and release huge quantities of energy by melting and solidifying at the phase change temperature (PCT). PCMs are called latent heat storage (LHS) materials because heat is absorbed or released as a material transition from a solid to a liquid and vice versa, or when a change occurs internally in the material. Several compositions of different PCM material are used as per the heat storage requirements. In the present shelter mixtures of food grade inorganic salts with some exclusive additives are used because of their better heat storage capacity.

The portable shelter comprises an external roof structure comprising plurality of solar photovoltaic panels (1) with plurality of evacuated tube collectors (6) connected to air heat exchangers. The evacuating tube collector (ETC) (6) is used to absorb the solar energy in the form of heat which transfers it to the PCM box within the shelter through duct pipe for being used at night when the temperature drops and maintains a temperature variation inside the habitable area. Particularly, the ETC tubes are the integrated solar collector tubes that receives the solar radiation from the sun and transfer thermal energy to the air circulating the shelter. Particularly, in the daylight, abundant sunlight is available and is radiated over the ETC tube (6). The cold air from the shelter enters into the collector tube/heat exchanger through the inlet duct (15), receives thermal energy and gets heated. The air circulation is regulated by the manual 3-way valve into the cold air duct (15). During the daylight, the air flows through the collector tube whereas in the night the air circulation cycle is maintained by flowing the air directly through the PCM Box (22). The air flow direction in the outlet duct from the solar collector is regulated by the 2-way valve installed in the hot air duct. The part of hot air from the outlet solar collector/ ETC tube (17) flows directly into the shelter and the remaining part of the hot air flows into the PCM box to store the thermal energy during daylight. During the night, when sunlight is not available the PCM box releases heat by phase transformation. The hot air is released into the shelter through the diffuser to keep the shelter warm. The hot air flows all over the shelter to keep warm to the living zone (20), buffer zone (14), storage space (10) and the warm water tank (9).

The base of the shelter comprises an easy-to-assemble pedestal (12) without the requirement of any type of fastener. It provides a rigidly stable plane base structure to the shelter. The engineered shelter is made up of FRP based material due to its strength, lightweight material that resists corrosion and suitable for installing at any location including high altitude terrain to act as a stable platform for the shelter which can easily be put together. The box type FRP pedestal (12) with all walls filled with PUF assimilating the base ring of the skeleton for interconnection is provided. The pedestal blocks are designed with enough insulation as well, to reduce the thermal energy dissipation. Heat EPUF insulation layer is placed over the pedestal top surface/ground floor to reduce the heat transfer from the shelter ground floor to pedestal. The one pedestal block is facilitating the heat bank comprising the PCM box filled with stainless steel stacks. Two pedestal blocks are dedicated for actively heated 3-chamber biodigester to be installed and function properly. Furthermore, the pedestal provides the provision of waste removal from the biodigester. Four pedestal blocks are reserved for general utility storage.

The base of the shelter is divided into two categories which is living zone (20) and buffer zone. The shelter (7) comprises at least one regular entry/exit door (4), a sliding door separating the living and buffer zone, and an emergency door. The living zone comprises walls having reflector films, plurality of foldable beds, and at least one Energy Recovery Ventilator (ERV) for carbon dioxide/oxygen (CO2/O2) control. The living zone comprising four foldable sleeping bunk beds (13) are made up of MS with cushions of comfortably required sizes are provided for the comfort of occupants during sleeping or seating. In the storage area, a hanger and drawer are provided for keeping the clothes and other items. Furthermore, the shelter comprises primary storage (10) on the overhead or on the first floor, over the bathroom and storage space of the ground floor. The primary storage is large enough and spread over the whole buffer zone on the first floor to fulfill the basic needs of four people. The primary storage of the 1st floor can be easily accessed through the leaving zone. Moreover, on the first floor above the primary storage space, a water tank (9) of required capacity is placed to fulfill the daily needs of the warm water.

The other way of major heat loss is through ventilation. Since ventilation is necessary to maintain the air quality, especially at higher altitude where low oxygen is the concern, an efficient ERV ventilation is installed in back wall of the living zone (20). This ERV ventilation can reduce heat loss up to 80% by preheating the fresh air and it also maintains sufficient air quality within the shelter.

In a preferred embodiment of the present invention, there is provided a portable shelter, wherein the living zone comprises walls having reflector films to minimize the heat loss through the wall, plurality of foldable beds with a layer of cushion to provide extra comfort during sleeping to the occupants, and at least one Energy Recovery Ventilator (ERV) system to control the air quality in the living zone by maintaining carbon dioxide/oxygen (CO2/O2) level.

In a preferred embodiment of the present invention, there is provided a portable shelter, wherein the shelter (7) further comprises overhead passive warm water tank (9) and a toilet (11) placed inside the shelter.

In another embodiment of the present invention, there is provided a portable shelter, wherein the evacuated tube collectors (6) is connected to a phase change materials (PCM) box (12) placed under the base pedestal (12) for regulating thermal heating into the living zone.

In yet another embodiment of the present invention, there is provided a portable shelter, wherein the shelter (7) further comprises a thermostat controller regulating valves and fans for automatic temperature control.
Advantages of Portable Shelter

Sustainability at high altitudes: The portable shelter disclosed in the present invention has optimum strength and stability which enables the shelter to function at high altitudes even in extreme weather conditions such as cloudy weather or during the heavy snow fall.
Portability: The shelter of the present invention has ease of portability due to optimum weight of the components and simpler assembly parts. The shelter can be installed in 4hours and can be disassembled within 2 hours by the 4 trained personnels and furthermore it has about 800kg of weight and each part is under 25kg which facilitates the ease of installation.
Cost effectiveness: The portable shelter of the present inventions is prepared from innovative materials which requires minimal maintenance thereby reducing the overall cost of the system.
Reliability: The shelter can maintain the temperature up to 10oC-15oC that is required for the human comfort even when the ambient temperature is -30oC -40oC with longer service life.
Environmental sustainability: The shelter is self-powered and harnesses the renewable solar energy for direct heating during daylight hours and stores the thermal energy in PCM based materials to heat up the shelter during the night.
Autonomous Eco-Haven: The shelter is completely off-grid with integrated solar PV cell for basic electricity requirement and also comprises eco-friendly bio-digester for proper human sanitation.

The invention is not limited to the structures, methods and instrumentalities described above and shown in the drawings. The invention is defined by the claims set forth below.

EXAMPLES

The portable shelter is experimentally tested in the real field. When the shelter is reached its stagnation condition, the experimental result of 24 hours from the morning 8:00 AM to the 8:00AM morning in the next day is recorded and their corresponding result is presented in comparison with numerical results as shown in the Table 1. However, the exact heating capacity may increase or decrease during the final testing or after the modification in the design.

Table 1: Comparison of Experimental and Numerical results.

Time Duration Ambient
Temp. (o C) Exp.
Temp (o C) Numerical Result (o C) Time Duration Ambient
Temp. (o C) Exp.
Temp (o C) Numerical Result (o C)
8:04 AM -19.9 13.5 16.925 21:04 PM -13.7 21.3 24.72586
8:19 AM -18.9 13.7 16.96323 22:04 PM -16.4 20.2 23.58175
9:09 AM -15.5 13.8 17.07429 23:04 PM -17.2 19.9 23.22155
10:04 AM -12 15 18.22747 12:09 AM -18.8 19.3 22.56552
11:04 AM -10.4 16.8 20.2816 1:04 AM -19.3 17.8 21.23669
12:09 PM -9.1 18.5 21.86706 2:04 AM -21.1 17.7 21.02398
13:04 PM -6.8 20.5 23.74583 3:09 AM -20.3 16.5 19.83753
14:09 PM -6.1 22.9 26.28003 4:04 AM -21.4 15.6 19.05967
15:04 PM -5.2 24.3 27.59216 5:04 AM -21.2 14 17.42231
16:04 PM -6.9 25.3 28.63236 5:34 AM -22.2 13.9 17.27768
17:04 PM -8.4 24.9 28.28382 5:49 AM -23.1 13.6 16.87366
18:09 PM -9.3 24.6 27.94416 6:04 AM -22.2 13.7 16.90621
19:04 PM -10.1 23.2 26.68046 7:04 AM -22.1 14.1 17.41442
20:04 PM -13.3 22.9 26.15447 8:04 AM -21.6 13 16.21256

The living temperature inside the shelter with respect to the ambient temperature is compared. The numerical result provides slightly better than the experimental results of the present shelter which is due to the fact that the numerical simulations are conducted in a controlled manner where the loss due to the small-scale phenomenon are neglected whereas in real experimentation, minor heat losses are unavoidable due to various factors.
However, the living temperature of the present shelter is significantly appreciable, and it always maintains the high degree of temperature difference between the living and ambient as shown in the Figure 6.

Dated this 14th day of March, 2024.
,CLAIMS:We Claim:

1. A portable shelter (7) for high altitude regions comprising:

a stainless-steel structure comprising a base ring, plurality of rafters (8) and purlins (16) assembled to form an offset gothic shape;

an external roof structure comprising plurality of solar photovoltaic panels (1) with plurality of evacuated tube collectors (6) connected to air heat exchangers;

composite walls (2) comprising plurality of insulating layers with latching provision for leakage-proof joints; and

a base structure comprising self-insulating fiber reinforced plastic base pedestals (12) encasing a heat bank, a diffuser (18), a bio-digester (21), and storage space (10 and 19).

2. The portable shelter (7) as claimed in claim 1, wherein the composite walls (2) comprises layers of expanded polyurethane foam, aerogel, and glass wool.

3. The portable shelter (7) as claimed in claims 1-2, wherein the shelter (7) is provided with metallic cadders placed on the rafters for fixing insulating walls (2).

4. The portable shelter (7) as claimed in claim 1, wherein the heat bank comprises Phase Change Materials (PCM) filled stainless steel stacks with inserts placed at least inside one pedestal.

5. The portable shelter (7) as claimed in claim 1, wherein the shelter (7) comprises at least two pedestals forming a bio-digester (12), at least one pedestal for heat storage, one pedestal for battery storage, and four pedestals for general storage.

6. The portable shelter (7) as claimed in claim 1, wherein the shelter (7) further comprises at least one regular entry/exit door (4), a sliding door separating the living zone (20) and buffer zone (14), and an emergency door.

7. The portable shelter (7) as claimed in claim 6, wherein the living zone (20) comprises walls having reflector films, plurality of foldable beds (13), and at least one Energy Recovery Ventilator (ERV) for carbon dioxide/oxygen (CO2/O2) control.

8. The portable shelter (7) as claimed in claim 1, wherein the shelter (7) further comprises overhead passive warm water tank (9) and a toilet (11) placed inside the shelter.

9. The portable shelter (7) as claimed in claim 1, wherein the evacuated tube collectors (6) is connected to a phase change materials (PCM) box (12) placed under the base pedestal (12) for regulating thermal heating into the living zone (20).

10. The portable shelter (7) as claimed in claim 1, wherein the shelter (7) further comprises a thermostat controller regulating valves and fans for automatic temperature control.