Claims:WHAT IS CLAIMED IS:

1. A geoexchange package room system (100), said system comprising:
a set of recirculation pumps (A) configured to deliver pumping of a liquid at constant or variable speed;

a pressurization pump (B) configured to maintain adequate pressure in the set of recirculation pumps (A);

a submersible pump (K) configured to pump liquid to a heat exchanger (J) at constant or variable speed;

a closed loop piping system comprising supply pipe (E) and return pipe (F), wherein the supply pipe (E) deliver warm water gathered from a process system (L) to the heat exchanger (J) and the return pipe (F) carry cold ground water from the heat exchanger (J) to the process system (L); and

a control panel (G) configured to control operating parameters of said package room systems (100).

2. The system of claim 1, wherein the set of recirculation pumps (A) is configured to maintain constant temperature difference across the heat exchanger.

3. The system of claim 1, wherein the submersible pump (K) is configured to maintain constant temperature difference across the heat exchanger.

4. The system of claim 1, wherein the submersible pump (K) acts as a field controller that provides necessary input signals to the control panel (G).
5. The system of claim 1, wherein the set of recirculation pumps (A) is connected with an air purge valve (D) to release trapped air from the supply pipe (E) and the return pipe (F).

6. The system of claim 1, wherein the liquid in the geoexchange package room system (100) is brine, water, etc. or like.

7. The system of claim 6, wherein the liquid in the system (100) is chosen from a group of chemicals which sustains sub-zero temperatures.

8. The system of claim 1, wherein the heat exchanger (J) maintains a flow rate which is maintained by the submersible pump (K).

9. The system of claim 1, wherein the process system (L) is a refrigeration system, space heating systems, process cooling systems or like.

10. The system of claim 1, wherein the geoexchange package room system (100) is connected with makeup water system (C) to maintain constant water pressure in the set of recirculation pumps (A). , Description:BACKGROUND
Technical Field

The embodiments herein generally relate to geoexchange systems and more particularly, to a geoexchange system having closed loop advective package rooms which enables standardization to majority of the geoexchange system, reducing site intervention and thereby ensuring quality and avoiding delays.

Description of the Related Art

A typical geoexchange heating and cooling system uses the consistent temperature of the earth to provide heating, cooling, and hot water for both residential and commercial buildings. Here, water is circulated through polyethylene pipes in closed loops that are installed at a minimum of 5 feet below the earth's surface. These loops can be buried vertically or horizontally in the ground, or submersed in a pond. The loops are connected to an extended-range water source heat pump installed in your home or commercial property.

When heating the home or hot water, heat is extracted from the earth into the water circulating in the loop. This heat is used by the heat exchanger and compressor in the water source heat pump to warm the air and provide hot water. Cold air or chilled water is provided as a result of transferring heat from the conditioned space and rejecting it into the earth. In size, a water source heat pump is similar to a standard furnace. A complete geoexchange system, consisting of the water source heat pump, the loop, and a standard duct system for delivery of hot or cold air, provides all the heating, cooling, and hot water needed for your home in one integrated system.
Geoexchange systems work well in any climate zone, from Pacific coastal regions to the Sierra Mountains, and all areas in between. Used as early as the 1920s in Europe, geoexchange systems have been installed throughout North America for the last 30 years. The EPA lists geoexchange systems as the most environmentally friendly and efficient systems available today. Air-conditioning or process cooling accounts for more than 65% of the electricity bills in most of the buildings (commercial, industrial and residential). The Indian air-conditioning/process cooling market is growing at fast pace in view of the exponential growth in the new construction market. With special emphasis on smart cities, the industry is actively exploring adoption of clean technologies that would reduce substantial pressure on India’s energy and water resources.

Commercial buildings that are centrally air-conditioned use an air-cooled or water-cooled heat exchanger to extract heat from the building out to the ambient environment. The efficiencies of these traditional air conditioning systems depend on the seasonal variations in the wet bulb (water cooled using cooling towers) and dry bulb (air cooled condensers) temperatures. Higher the ambient temperatures, lower is the efficiency of the traditional systems and vice versa.

While geothermal heat exchange continues to be common in the cold countries like the US or most parts of Europe for heating purposes, the use of the technology in tropical climates has had multiple knowledge and technology barriers. The conventional air-conditioning systems use either an air-cooled condenser or a cooling tower to reject building heat in the atmosphere. Systems that use air-cooled condensers are called air-cooled systems and systems that use cooling towers are called water-cooled systems. Just how water-cooled engines (car engine) are efficient than air-cooled engines (motor bike engine), water-cooled air-conditioning systems are more efficient than air-cooled air-conditioning systems. That said; both conventional air-cooled and water-cooled systems have their own drawbacks such as high energy consumption, high water consumption, use of hazardous cleaning chemicals, lesser life, high maintenance, higher space requirements, high noise levels, etc.

Geoexchange projects are typically customized all the time for each site separately. The customization adds to execution difficulties, as the site intervention increasing and in turn increases risk of quality breach and risk of delays in setting up a geoexchange site. The geoexchange systems are often alternative systems adopted by customers based on attractiveness of return on initial investment. Project site quality issues and delays could affect commercial viability and effectiveness of the geoexchange systems. Alternatively, the geoexchange systems can be erected or installed at site. The issue with site installation of the geoexchange system is that often quality of installation could be compromised on site. Moreover, there is dependence on skill level of the available. For trained labours the cost of installation would also increase and sometimes lack of skilled labours could result in project delays and cost escalations.

Accordingly, there remains a need for geothermal system solution that brings standardization to majority of the geoexchange system by reducing site intervention and thereby ensuring quality and avoiding delays. The solution should include manufacturing of majority of the geoexchange systems in the factory set up itself.

SUMMARY

The embodiment herein provides a geoexchange system having closed loop advective package rooms which enables standardization to majority of the geoexchange system. A geoexchange package room system includes a set of recirculation pumps configured to deliver pumping of a liquid at constant or variable speed, a pressurization pump configured to maintain adequate pressure in the set of recirculation pumps, a submersible pump configured to pump liquid to a heat exchanger at constant or variable speed, a closed loop piping system comprising supply pipe and return pipe, wherein the supply pipe deliver warm water gathered from a process system to the heat exchanger and the return pipe carry cold ground water from the heat exchanger to the process system, and a control panel configured to control operating parameters of said package room systems.

In an embodiment, the set of recirculation pumps may be configured to maintain constant temperature difference across the heat exchanger. In one embodiment, the submersible pump may be configured to maintain constant temperature difference across the heat exchanger.

In another embodiment, the submersible pump may act as a field controller that provides necessary input signals to the control panel. In an embodiment, the set of recirculation pumps may be connected with an air purge valve to release trapped air from the supply pipe and the return pipe.

In one embodiment, the liquid in the geoexchange package room system may be a brine, water, etc. or like. In another embodiment, the liquid in the system may be chosen from a group of chemicals which sustains sub-zero temperatures.

In an embodiment, the heat exchanger maintains a flow rate which may be maintained by the submersible pump. In an example embodiment, the process system may be a refrigeration system. In an embodiment, the geoexchange package room system may be connected with makeup water system C to maintain constant water pressure in the set of recirculation pumps A.

The geoexchange package room system may be factory assembled and retrofitted at a desired geoexchange site, wherein the installation at the site ensures less execution time and eliminate quality issues.

These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF THE DRAWINGS

The embodiments herein will be better understood from the following detailed description with reference to the drawings, in which:

FIG. 1 illustrates a geoexchange system having closed loop advective package room according to an embodiment mentioned herein.

Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure.

Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

As mentioned, there remains a need for geothermal system solution that brings standardization to majority of the geoexchange system by reducing site intervention and thereby ensuring quality and avoiding delays. The solution should include manufacturing of majority of the geoexchange systems in the factory set up itself.

The present embodiments herein provide a geoexchange system having closed loop advective package rooms which enables standardization to majority of the geoexchange system, reducing site intervention and thereby ensuring quality and avoiding delays. The above drawbacks are overcome with a solution that brings standardization to majority of the geoexchange system. The solution includes manufacturing of majority of the geoexchange system in the factory set up. Referring now to the figures, more particularly to FIG. 1, where similar reference characters denote corresponding features consistently throughout the figures, preferred embodiments are shown.

FIG. 1 illustrates a geoexchange system having closed loop advective package room according to an embodiment mentioned herein. The geoexchange package room system 100 includes a set of recirculation pumps A which may be configured to deliver pumping of a liquid at constant or variable speed, a pressurization pump B which may be configured to maintain adequate pressure in the set of recirculation pumps A, a submersible pump K which may be configured to pump liquid to a heat exchanger J at a constant or variable speed, a closed loop piping system comprising supply pipe E and return pipe F, and a control panel may be configured to control operating parameters of said package room systems 100.

In an embodiment, the supply pipe may deliver warm water gathered from a process system L to the heat exchanger J. In an embodiment, the return pipe F may carry cold ground water from the heat exchanger J to the process system L. In one embodiment, the set of recirculation pumps A may be configured to maintain constant temperature difference across the heat exchanger J.

In one embodiment, the submersible pump K may be configured to maintain constant temperature difference across the heat exchanger J. In another embodiment, the submersible pump K may act as a field controller that provides necessary input signals to the control panel G. The set of recirculation pumps A may be connected with an air purge valve D to release trapped air from the supply pipe E and the return pipe F.

In an embodiment, the set of recirculation pumps A are at constant speed or variable speed pumps which may be operated either with constant speed or variable speed control. In an embodiment, the variable speed control may not be typical as heat exchange efficiency could drop with reduction in water velocities inside the heat exchangers J.

In another embodiment, the variable speed control may be possible up to the point where Reynolds’s number is maintained in the heat exchangers and may be over 3000. The variable speed control logic includes maintenance of constant temperature difference across the process heat exchanger. The re-circulation pumps A may also be operated based on equal run time basis.

In one embodiment, the submersible pump K may be at constant speed or variable speed pumps operated with either constant speed or variable speed control. The variable speed control may be not typical as heat exchange efficiency could drop with reduction in water velocities inside the heat exchangers J. The variable speed control may be possible up to the point where Reynolds’s number maintained in the heat exchangers is over 3000.

In an embodiment, the variable speed control logic includes maintenance of constant temperature difference across the process heat exchanger. In an embodiment, the submersible pump K may also act as field controller and may provided signal either through wired connections I or through wireless communication. In an embodiment, the geoexchange package room system may be connected with makeup water system C to maintain constant water pressure in the set of recirculation pumps A.

In one embodiment, the liquid in the geoexchange package room system 100 may be brine, water, etc. or like. In another embodiment, the liquid in the system 100 may be chosen from a group of chemicals which sustains sub-zero temperatures. In an embodiment, the heat exchanger J may maintain a flow rate which may be maintained by the submersible pump K.

In an embodiment, the process system L may be a refrigeration system, space heating systems, process cooling systems or like. In an embodiment, the geoexchange package room system 100 may be factory assembled and retrofitted at a desired geoexchange site. The installation at the site ensures less execution time and may eliminate quality issues.

In an advantageous embodiment, the present solution may be integrated with refrigeration system in air-conditioning and space heating and process cooling and heating applications. Thus the present disclosure provides standardization of majority of the geoexchange systems.
The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope.