US2438720A - Deep well circuit for heat pumps - Google Patents
Deep well circuit for heat pumps Download PDFInfo
- Publication number
- US2438720A US2438720A US729521A US72952147A US2438720A US 2438720 A US2438720 A US 2438720A US 729521 A US729521 A US 729521A US 72952147 A US72952147 A US 72952147A US 2438720 A US2438720 A US 2438720A
- Authority
- US
- United States
- Prior art keywords
- heat
- well
- water
- casing
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 238000010276 construction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/003—Insulating arrangements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/30—Geothermal collectors using underground reservoirs for accumulating working fluids or intermediate fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0052—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using the ground body or aquifers as heat storage medium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S159/00—Concentrating evaporators
- Y10S159/902—Concentrating evaporators using natural heat
Definitions
- This invention relates to heat pumps and particularly to the construction of deep wells utilized for the purpose of supplying heat to a heat pump during the heating season and discharg ing heat therefrom dining the cooling season of operation of the heat pump.
- the main objects of this invention are to provide an improved form of heat exchanger of the deep well type; and to provide an improved form of deep well apparatus that is particularly suited for serving a deep well in places where ground water is not available or is so scarce or impure as to make it desirable to construct the well so as to exclude ground water from the heat exchanger circulatory system of the he t p mp-
- the present disclosure is directed to a species of the deep well construction that is more broadly disclosed and claimed in the application of Emory N. Kemler, Serial No. 700,417 filed October 1, 1946, and the joint application of Marvin M. Smith and Emory N, Kemler, Serial No. "703,264 filedOctober 14, 1946, all relating to deep well apparatus constructions for use in connection with heat pumps 01 the general type disclosed and claimed in the application of Marvin M. Smith for patent on Heat pump, Serial No. 624,351 filed October 25, 1945.
- Figure 1 shows, to some extent diagrammatically, heat exchange apparatus including a deep well particularly constructed for making use of earth temperatures in places where the presence or absence of ground water may be disregarded, the well and some of its apparatus being shown in section.
- Fig. 2 is a fragmentary section of the same with a modified form 01 baflle plate suited for use in cases where the diameter of the well casing is small compared to that of the pipes that extend into it, so that the bathe-carrying pipe occupies an eccentricposition with respect to the axis of the casing.
- Fig. 3 is a cross-sectional view of the same taken on line 3-3 of Fig. 2 and illustrating the uniformly concentric spacing of the peripheral margin of the baffle plate from the walls of the casing.
- FIG. 8 (cits-129) I 2' pipes & and 5 leading into the interior of a well 8 extending deeply below the surface l of the earth and comprising a casing t oi. metal or other material impervious to liquid which is closed at its lower end'by a plug of concrete or the like.
- the casing 8 may be driven into the earth by any of the well-known deep well construction methods, and the well bore represented in the drawing by the irregular lines it is filled about the exterior oi the casing as by flushing earth or other material into it, so as to bring the walls of the easing into intimate heat-exchange relation with the surrounding soil or rock.
- the well casing is filled with water, or any other appropriatefluid heat-conveying agent, to a level it close to its top which may be provided with a suitable flange i2 resting on a concrete slab i3 of suitable dimensions to stabilize the. support of the well.
- the suction pipe t extends a sufiicient distance below the surface of the water it to remain submerged regardless of normal incidental fluctuations in the water level and is associated with-a pump 64 which circulates the water from the well through the heat v exchanger 9 and back through the discharge pipe 5, which extends to a point near the bottom of the well. Both of these pipes are open at their lower ends so that the water of the well forms part of the circulatory system.
- the long return pipe 5 supports a plurality of baflles l5 which may be of conical form, as shown in Figs. 1 and 2, and of which the marginal periphery is so arranged with respect to the walls oi the casing ii that the upward flow of the water in the well will be distributed uniformly about the walls of the casing and will tend to hug and wipe along the vertical walls of the casing under the action of the pump it.
- the periphery l6 of the bane should preferably be uniformly spaced from the wall of the casing regardless 01' whether the pipe 5 extends along the axis of the casing, as in Fig. 1, or is eccentric to such axis, as in Fig, 2.
- the pipe 5 should be insulated against transfer oi heat to or from the water in that part of the well that is co-extensive with the suction pipe 4, and to this end the pipe 5 is shown to be surrounded by a larger pipe I! which may be open at the bottom but closed to the air at its upper end.
- a small air pipe I8 is tapped. into the upper end of the insulating pipe I! so that the space between the pipes 5 and I! may be filled with air.
- the pipe I8 is provided with a pet cock [9 and a pressure gauge 20 which indicates the head or water standing between the mal operation of the consequently takes assarao level II of the well and the level 2! to which the water may enter the lower end of the pipe II.
- the operation of the device shown is as follows: The well is made deep enough to hold a sumcient quantity of water to take care or the norheat pump. Water is drawn from the well by pipe 4, circulated through the heat exchanger by the action of the pump and returned to the bottom of the well by Pipe 5.
- the heat exchanger l acts as an evaporator during the heating cycle of the heat pump and heat from the water circulated therein, and this cold water takes up heat from the earth as it flows upward in the well.
- the heat exchanger I serves as the condenser of the heat pump and heats the water that circulates through it. This added heat is discharged to the earth as the water circulates in the well.
- the bailles cause the water delivered to the well to flow back along its casing wall for maximum heat transfer as will be understood.
- a heat pump a well bore subject to subterranean temperature and containing a fluid heat-conveying agent, a heat conducting casing defining said well bore, a pipe extending downward within said well bore and communicating therewith near the bottom thereof, and battle means carried by said pipe at its lower part to direct an upward current of said fluid heat conveying agent toward and along the walls of said casing, saidpipe being insulated against direct transfer-of heat between it and the'water in the upper portion of said casing.
- a heat exchanger comprising refrigerant circulating means and water circulating means .of said well bore, a discharge pipe extending downwardly in said casing to near the bottomthereof, pumping means for circulating the water in said suction and discharge pipes, and a plu rality of baflies attached to said discharge pipe and'extending upward and outward therefrom and having their peripheral edges substantially uniformly spaced from said casing to concentrate r the upward flow of water along the casing at the edges of said baffles. 4
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
March 30, 1948. M. M. SMITH DEEP WELL CIRCUIT FOR HEAT PUMPS Filed Feb.v 19, 1947 FIG. I
HEAT 3 EXCHANGER 2 INVENTOR MARVIN 'M. SMITH BY @A 044.
AT TO RN EYS Patented Mar. 30, 1948 Marvin M. Smith, Muncl e, Ind., assignor to Muncie Gear Works, Inc., Muncie, Ind, a corporation at Indiana Application February 1 i This invention relates to heat pumps and particularly to the construction of deep wells utilized for the purpose of supplying heat to a heat pump during the heating season and discharg ing heat therefrom dining the cooling season of operation of the heat pump.
The main objects of this invention are to provide an improved form of heat exchanger of the deep well type; and to provide an improved form of deep well apparatus that is particularly suited for serving a deep well in places where ground water is not available or is so scarce or impure as to make it desirable to construct the well so as to exclude ground water from the heat exchanger circulatory system of the he t p mp- The present disclosure is directed to a species of the deep well construction that is more broadly disclosed and claimed in the application of Emory N. Kemler, Serial No. 700,417 filed October 1, 1946, and the joint application of Marvin M. Smith and Emory N, Kemler, Serial No. "703,264 filedOctober 14, 1946, all relating to deep well apparatus constructions for use in connection with heat pumps 01 the general type disclosed and claimed in the application of Marvin M. Smith for patent on Heat pump, Serial No. 624,351 filed October 25, 1945.
A specific embodiment of the present invention is illustrated in the accompanying drawings in which:
Figure 1 shows, to some extent diagrammatically, heat exchange apparatus including a deep well particularly constructed for making use of earth temperatures in places where the presence or absence of ground water may be disregarded, the well and some of its apparatus being shown in section.
Fig. 2 is a fragmentary section of the same with a modified form 01 baflle plate suited for use in cases where the diameter of the well casing is small compared to that of the pipes that extend into it, so that the bathe-carrying pipe occupies an eccentricposition with respect to the axis of the casing.
Fig. 3 is a cross-sectional view of the same taken on line 3-3 of Fig. 2 and illustrating the uniformly concentric spacing of the peripheral margin of the baffle plate from the walls of the casing.
frigerant is circulated by pipes 2 and 3 in heat-- exchange relation to a circulation of water or other fluid heat-conveying medium by means 01' a 1947, Serial No. 729,521
(cits-129) I 2' pipes & and 5 leading into the interior of a well 8 extending deeply below the surface l of the earth and comprising a casing t oi. metal or other material impervious to liquid which is closed at its lower end'by a plug of concrete or the like. The casing 8 may be driven into the earth by any of the well-known deep well construction methods, and the well bore represented in the drawing by the irregular lines it is filled about the exterior oi the casing as by flushing earth or other material into it, so as to bring the walls of the easing into intimate heat-exchange relation with the surrounding soil or rock. The well casing is filled with water, or any other appropriatefluid heat-conveying agent, to a level it close to its top which may be provided with a suitable flange i2 resting on a concrete slab i3 of suitable dimensions to stabilize the. support of the well.
The suction pipe t extends a sufiicient distance below the surface of the water it to remain submerged regardless of normal incidental fluctuations in the water level and is associated with-a pump 64 which circulates the water from the well through the heat v exchanger 9 and back through the discharge pipe 5, which extends to a point near the bottom of the well. Both of these pipes are open at their lower ends so that the water of the well forms part of the circulatory system.
The long return pipe 5 supports a plurality of baflles l5 which may be of conical form, as shown in Figs. 1 and 2, and of which the marginal periphery is so arranged with respect to the walls oi the casing ii that the upward flow of the water in the well will be distributed uniformly about the walls of the casing and will tend to hug and wipe along the vertical walls of the casing under the action of the pump it. To this end, the periphery l6 of the bane should preferably be uniformly spaced from the wall of the casing regardless 01' whether the pipe 5 extends along the axis of the casing, as in Fig. 1, or is eccentric to such axis, as in Fig, 2.
Preferably the pipe 5 should be insulated against transfer oi heat to or from the water in that part of the well that is co-extensive with the suction pipe 4, and to this end the pipe 5 is shown to be surrounded by a larger pipe I! which may be open at the bottom but closed to the air at its upper end. A small air pipe I8 is tapped. into the upper end of the insulating pipe I! so that the space between the pipes 5 and I! may be filled with air. The pipe I8 is provided with a pet cock [9 and a pressure gauge 20 which indicates the head or water standing between the mal operation of the consequently takes assarao level II of the well and the level 2! to which the water may enter the lower end of the pipe II.
The operation of the device shown is as follows: The well is made deep enough to hold a sumcient quantity of water to take care or the norheat pump. Water is drawn from the well by pipe 4, circulated through the heat exchanger by the action of the pump and returned to the bottom of the well by Pipe 5.
The heat exchanger l acts as an evaporator during the heating cycle of the heat pump and heat from the water circulated therein, and this cold water takes up heat from the earth as it flows upward in the well. In the cooling season, the heat exchanger I serves as the condenser of the heat pump and heats the water that circulates through it. This added heat is discharged to the earth as the water circulates in the well. The bailles cause the water delivered to the well to flow back along its casing wall for maximum heat transfer as will be understood.
Although but one specific embodiment of thisinvention is herein shown and described, it will be understood that numerous details of the structure shown may be altered or omitted without departing from the spirit of the invention as defined by the following claims. 1
I claim:
1. In a heat pump. a well bore subject to subterranean temperature and containing a fluid heat-conveying agent, a heat conducting casing defining said well bore, a pipe extending downward within said well bore and communicating therewith near the bottom thereof, and battle means carried by said pipe at its lower part to direct an upward current of said fluid heat conveying agent toward and along the walls of said casing, saidpipe being insulated against direct transfer-of heat between it and the'water in the upper portion of said casing. I
2. A heat exchanger comprising refrigerant circulating means and water circulating means .of said well bore, a discharge pipe extending downwardly in said casing to near the bottomthereof, pumping means for circulating the water in said suction and discharge pipes, and a plu rality of baflies attached to said discharge pipe and'extending upward and outward therefrom and having their peripheral edges substantially uniformly spaced from said casing to concentrate r the upward flow of water along the casing at the edges of said baffles. 4
MARVIN Mi sMlTH.
I REFERENCES CITED I The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,981,730 Hawkins Nov. 20, 1934 2,167,878 Crawford Aug. 1, 1939
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US729521A US2438720A (en) | 1947-02-19 | 1947-02-19 | Deep well circuit for heat pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US729521A US2438720A (en) | 1947-02-19 | 1947-02-19 | Deep well circuit for heat pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
US2438720A true US2438720A (en) | 1948-03-30 |
Family
ID=24931430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US729521A Expired - Lifetime US2438720A (en) | 1947-02-19 | 1947-02-19 | Deep well circuit for heat pumps |
Country Status (1)
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US (1) | US2438720A (en) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2572356A (en) * | 1948-05-05 | 1951-10-23 | Frank A Krueger | Reversible heating and cooling system |
US2844464A (en) * | 1954-12-07 | 1958-07-22 | Lawton Thomas Oregon | Method for chemically treating wood particles |
US3274769A (en) * | 1964-05-05 | 1966-09-27 | J B Reynolds Inc | Ground heat steam generator |
US3363664A (en) * | 1964-02-25 | 1968-01-16 | Juan T. Villanueva | Scheme of salt manufacture |
US3399540A (en) * | 1967-01-09 | 1968-09-03 | Claud E. Kahmann | Swimming pool systems |
US3521699A (en) * | 1969-04-16 | 1970-07-28 | Allen T Van Huisen | Earth energy conservation process and system |
DE2854881A1 (en) * | 1978-12-19 | 1980-06-26 | Hermann Schoof | DEVICE FOR THE USE OF EARTH HEAT FOR HEATING PURPOSES |
US4224805A (en) * | 1978-10-10 | 1980-09-30 | Rothwell H Richard | Subterranean heat exchanger for refrigeration air conditioning equipment |
US4325228A (en) * | 1980-05-20 | 1982-04-20 | Wolf Herman B | Geothermal heating and cooling system |
US4461157A (en) * | 1982-02-03 | 1984-07-24 | Snyder General Corporation | Ground water heat pump system for low yield well |
US4489568A (en) * | 1982-02-03 | 1984-12-25 | Snyder General Corporation | Ground water heat pump system |
US4544021A (en) * | 1978-05-09 | 1985-10-01 | Barrett George M | Method and apparatus for extracting heat from a natural water source |
AT391506B (en) * | 1986-06-24 | 1990-10-25 | Naegelebau Ges M B H & Co | DEVICE FOR EXHAUSTING HEAT IN THE GROUND FLOOR OR TO RECOVER HEAT FROM THE GROUND FLOOR |
US6450247B1 (en) * | 2001-04-25 | 2002-09-17 | Samuel Raff | Air conditioning system utilizing earth cooling |
WO2010053424A1 (en) * | 2008-11-10 | 2010-05-14 | Pemtec Ab | System for exchanging energy with a ground |
ITMI20082077A1 (en) * | 2008-11-21 | 2010-05-22 | Fabio Baioni | REFINED GEOTHERMAL PROBE |
US20100252230A1 (en) * | 2005-05-26 | 2010-10-07 | Hans Alexandersson | Sealing device |
ITMI20091040A1 (en) * | 2009-06-12 | 2010-12-13 | Esae Srl | TERMOPOZZO |
WO2010143161A3 (en) * | 2009-06-12 | 2011-03-31 | Esae S.R.L. | System for storage and transfer of heat energy |
US20140110082A1 (en) * | 2012-10-18 | 2014-04-24 | Paul W. Suver | Geoexchange systems including ground source heat exchangers and related methods |
US20170131005A1 (en) * | 2014-07-01 | 2017-05-11 | Sinjin Enertec Co., Ltd. | Heat pump heating-cooling system using hybrid heat source and control method thereof |
US9811126B2 (en) | 2011-10-04 | 2017-11-07 | International Business Machines Corporation | Energy efficient data center liquid cooling with geothermal enhancement |
US10954924B2 (en) | 2015-09-24 | 2021-03-23 | Geothermic Solution, Llc | Geothermal heat harvesters |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1981730A (en) * | 1933-06-12 | 1934-11-20 | Hawkins Edmund Francis | Water cooler |
US2167878A (en) * | 1936-02-19 | 1939-08-01 | Crawford Robert Brace | Air conditioning system |
-
1947
- 1947-02-19 US US729521A patent/US2438720A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1981730A (en) * | 1933-06-12 | 1934-11-20 | Hawkins Edmund Francis | Water cooler |
US2167878A (en) * | 1936-02-19 | 1939-08-01 | Crawford Robert Brace | Air conditioning system |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2572356A (en) * | 1948-05-05 | 1951-10-23 | Frank A Krueger | Reversible heating and cooling system |
US2844464A (en) * | 1954-12-07 | 1958-07-22 | Lawton Thomas Oregon | Method for chemically treating wood particles |
US3363664A (en) * | 1964-02-25 | 1968-01-16 | Juan T. Villanueva | Scheme of salt manufacture |
US3274769A (en) * | 1964-05-05 | 1966-09-27 | J B Reynolds Inc | Ground heat steam generator |
US3399540A (en) * | 1967-01-09 | 1968-09-03 | Claud E. Kahmann | Swimming pool systems |
US3521699A (en) * | 1969-04-16 | 1970-07-28 | Allen T Van Huisen | Earth energy conservation process and system |
US4544021A (en) * | 1978-05-09 | 1985-10-01 | Barrett George M | Method and apparatus for extracting heat from a natural water source |
US4224805A (en) * | 1978-10-10 | 1980-09-30 | Rothwell H Richard | Subterranean heat exchanger for refrigeration air conditioning equipment |
DE2854881A1 (en) * | 1978-12-19 | 1980-06-26 | Hermann Schoof | DEVICE FOR THE USE OF EARTH HEAT FOR HEATING PURPOSES |
US4325228A (en) * | 1980-05-20 | 1982-04-20 | Wolf Herman B | Geothermal heating and cooling system |
US4489568A (en) * | 1982-02-03 | 1984-12-25 | Snyder General Corporation | Ground water heat pump system |
US4461157A (en) * | 1982-02-03 | 1984-07-24 | Snyder General Corporation | Ground water heat pump system for low yield well |
AT391506B (en) * | 1986-06-24 | 1990-10-25 | Naegelebau Ges M B H & Co | DEVICE FOR EXHAUSTING HEAT IN THE GROUND FLOOR OR TO RECOVER HEAT FROM THE GROUND FLOOR |
US6450247B1 (en) * | 2001-04-25 | 2002-09-17 | Samuel Raff | Air conditioning system utilizing earth cooling |
US20100252230A1 (en) * | 2005-05-26 | 2010-10-07 | Hans Alexandersson | Sealing device |
US8079420B2 (en) | 2005-05-26 | 2011-12-20 | Pemtec Ab | Sealing device |
WO2010053424A1 (en) * | 2008-11-10 | 2010-05-14 | Pemtec Ab | System for exchanging energy with a ground |
EP2189731A1 (en) * | 2008-11-21 | 2010-05-26 | Fabio Baioni | Geothermal probe |
ITMI20082077A1 (en) * | 2008-11-21 | 2010-05-22 | Fabio Baioni | REFINED GEOTHERMAL PROBE |
ITMI20091040A1 (en) * | 2009-06-12 | 2010-12-13 | Esae Srl | TERMOPOZZO |
WO2010143161A3 (en) * | 2009-06-12 | 2011-03-31 | Esae S.R.L. | System for storage and transfer of heat energy |
US9811126B2 (en) | 2011-10-04 | 2017-11-07 | International Business Machines Corporation | Energy efficient data center liquid cooling with geothermal enhancement |
US10716239B2 (en) | 2011-10-04 | 2020-07-14 | International Business Machines Corporation | Energy efficient data center liquid cooling with geothermal enhancement |
US11240935B2 (en) | 2011-10-04 | 2022-02-01 | International Business Machines Corporation | Energy efficient data center liquid cooling with geothermal enhancement |
US20140110082A1 (en) * | 2012-10-18 | 2014-04-24 | Paul W. Suver | Geoexchange systems including ground source heat exchangers and related methods |
US11796225B2 (en) * | 2012-10-18 | 2023-10-24 | American Piledriving Equipment, Inc. | Geoexchange systems including ground source heat exchangers and related methods |
US20170131005A1 (en) * | 2014-07-01 | 2017-05-11 | Sinjin Enertec Co., Ltd. | Heat pump heating-cooling system using hybrid heat source and control method thereof |
US10330355B2 (en) * | 2014-07-01 | 2019-06-25 | Sinjin Enertec Co., Ltd | Heat pump heating-cooling system using hybrid heat source and control method thereof |
US10954924B2 (en) | 2015-09-24 | 2021-03-23 | Geothermic Solution, Llc | Geothermal heat harvesters |
US11703036B2 (en) | 2015-09-24 | 2023-07-18 | Xgs Energy, Inc. | Geothermal heat harvesters |
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