WO2009049317A3 - Advanced dx system design improvements - Google Patents

Advanced dx system design improvements Download PDF

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Publication number
WO2009049317A3
WO2009049317A3 PCT/US2008/079848 US2008079848W WO2009049317A3 WO 2009049317 A3 WO2009049317 A3 WO 2009049317A3 US 2008079848 W US2008079848 W US 2008079848W WO 2009049317 A3 WO2009049317 A3 WO 2009049317A3
Authority
WO
WIPO (PCT)
Prior art keywords
line
cooling system
direct exchange
refrigerant
geothermal heating
Prior art date
Application number
PCT/US2008/079848
Other languages
French (fr)
Other versions
WO2009049317A2 (en
Inventor
Ryland B Wiggs
Original Assignee
Earth To Air Systems Llc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Earth To Air Systems Llc filed Critical Earth To Air Systems Llc
Publication of WO2009049317A2 publication Critical patent/WO2009049317A2/en
Publication of WO2009049317A3 publication Critical patent/WO2009049317A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
    • F24T10/15—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using bent tubes; using tubes assembled with connectors or with return headers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/195—Pressures of the condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
    • 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

Abstract

A direct exchange geothermal heating/cooling system (40) has a self-adjusting expansion valve (1) disposed in a liquid refrigerant transport line (8) and a bypass flow path (2 or 11) to improve efficiency when the system (40) operates in a heating mode. The expansion valve (1) may operate based solely on pressure from the vapor refrigerant transport line (6). An alternative system (50) may include an accumulator (17), a compressor (13), and an oil separator (14), wherein an oil return line (19) returns oil from the oil separator (14) to the accumulator (17). Additionally, a direct exchange geothermal heating/cooling system (60) may include a hot-gas bypass valve (21) for diverting heated vapor refrigerant from a vapor refrigerant line (6) to a liquid refrigerant line (8). Finally, a direct exchange geothermal heating/cooling system (70) having a sub¬ surface heat exchanger (45) extending to a depth of at least 300 feet may use a refrigerant particularly suited for such an application.
PCT/US2008/079848 2007-10-11 2008-10-14 Advanced dx system design improvements WO2009049317A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US97926407P 2007-10-11 2007-10-11
US60/979,264 2007-10-11

Publications (2)

Publication Number Publication Date
WO2009049317A2 WO2009049317A2 (en) 2009-04-16
WO2009049317A3 true WO2009049317A3 (en) 2009-05-28

Family

ID=40533046

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/079848 WO2009049317A2 (en) 2007-10-11 2008-10-14 Advanced dx system design improvements

Country Status (2)

Country Link
US (1) US8109110B2 (en)
WO (1) WO2009049317A2 (en)

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WO2009132015A2 (en) * 2008-04-21 2009-10-29 Earth To Air Systems, Llc Dx system heat to cool valves and line insulation
US8402780B2 (en) * 2008-05-02 2013-03-26 Earth To Air Systems, Llc Oil return for a direct exchange geothermal heat pump
US8776543B2 (en) * 2008-05-14 2014-07-15 Earth To Air Systems, Llc DX system interior heat exchanger defrost design for heat to cool mode
US20110209848A1 (en) * 2008-09-24 2011-09-01 Earth To Air Systems, Llc Heat Transfer Refrigerant Transport Tubing Coatings and Insulation for a Direct Exchange Geothermal Heating/Cooling System and Tubing Spool Core Size
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CA2710219A1 (en) * 2009-07-17 2011-01-17 Ipl Inc. Geothermal system and tubing therefor
WO2011056371A2 (en) 2009-11-03 2011-05-12 Carrier Corporation Pressure spike reduction for refrigerant systems incorporating a microchannel heat exchanger
US10422587B2 (en) * 2009-11-05 2019-09-24 Tai-Her Yang Vertical fluid heat exchanger installed within natural thermal energy body
US8997509B1 (en) 2010-03-10 2015-04-07 B. Ryland Wiggs Frequent short-cycle zero peak heat pump defroster
GB201007814D0 (en) * 2010-05-11 2010-06-23 Edwards Ltd Vacuum pumping system
US9341400B2 (en) * 2010-08-06 2016-05-17 Braun Intertec Geothermal, Llc Mobile hydro geothermal testing systems and methods
US20120279248A1 (en) * 2010-10-28 2012-11-08 Hector Delgadillo Turbo Coil Refrigeration System
WO2013074853A1 (en) 2011-11-15 2013-05-23 Earth To Air Systems, Llc Dx geothermal heat pump and refrigeration systems
JP5940489B2 (en) * 2013-05-21 2016-06-29 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド Air conditioner
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CN105806092B (en) * 2016-05-18 2017-07-28 张富华 Recirculated water underground cooling device
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US10219415B2 (en) * 2017-02-13 2019-02-26 Facebook, Inc. Server facility cooling system
US10557653B1 (en) * 2018-01-22 2020-02-11 Jerome Buschur Suction stabilizer control circuit for a heat pump system
DE102018202008A1 (en) * 2018-02-08 2019-08-08 BSH Hausgeräte GmbH Combination refrigeration device
EP3772587A1 (en) * 2019-08-09 2021-02-10 Jansen AG Geothermal probe

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Also Published As

Publication number Publication date
WO2009049317A2 (en) 2009-04-16
US20090095442A1 (en) 2009-04-16
US8109110B2 (en) 2012-02-07

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