GB2455579A - Heat pump comprising an inverter drive compressor - Google Patents

Heat pump comprising an inverter drive compressor Download PDF

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Publication number
GB2455579A
GB2455579A GB0724481A GB0724481A GB2455579A GB 2455579 A GB2455579 A GB 2455579A GB 0724481 A GB0724481 A GB 0724481A GB 0724481 A GB0724481 A GB 0724481A GB 2455579 A GB2455579 A GB 2455579A
Authority
GB
United Kingdom
Prior art keywords
heat pump
heat exchanger
heat
compressor
refrigerant
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.)
Withdrawn
Application number
GB0724481A
Other versions
GB0724481D0 (en
Inventor
Martin Perrin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0724481A priority Critical patent/GB2455579A/en
Publication of GB0724481D0 publication Critical patent/GB0724481D0/en
Publication of GB2455579A publication Critical patent/GB2455579A/en
Withdrawn legal-status Critical Current

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
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/18—Hot-water central heating systems using heat pumps
    • 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
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/31—Low ambient temperatures
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

A heat pump comprises an inverter drive compressor 4 and two refrigeration circuits, where the heat pump utilises a combined evaporating and condensing heat exchanger 9 in the second refrigeration circuit to increase the heating capacity. The heat pump may be operated in a high ambient temperature mode (see fig.1) or a low ambient temperature mode. Preferably, the combined evaporating and condensing heat exchanger is operated at low ambient temperature to increase heat output. The heat pump may be an air to water heat pump for the supply of domestic hot water and heating. In use, the heat pump may also comprise an air source evaporator 1 with an electric fan 2, electronic expansion valves 3, 10, a receiver 5, a drier 6, a desuperheater heat exchanger 7 and a condenser 8.

Description

An inverter compressor heat pump with energy enhancing combined evaporator and condenser heat exchanger for domestic hot water and heating.
Background
This invention relates to an air to water heat pump for the supply of hot water and heating.
At present, heat pumps are handicapped in that compressor efficiency and heat output drops as ambient temperature drops.
Statement of Invention
To overcome the above problems the invention proposes to increase heating capacity as ambient temperature drops.
The capacity of the system increases by using an inverter drive compressor which is linked to two separate refrigeration circuits. One circuit is linked to an external evaporator while the second circuit, which is only working at low ambient temperatures, is linked to a combined evaporating and condensing heat exchanger which will allow refrigerant from the first circuit to condense on one side while refrigerant in the second circuit evaporates on the other side of the heat exchanger. S 3
Advantages This system, when compared with other systems, allows the system to produce a constant high energy output while increasing system efficiency and reducing running costs.
Example
An Example of the invention will now be described by referring to the accompanying Drawings; fig 1 and fig2, on page 111 Figure 1 and Figure2 show a heat pump which contains an Evaporator (1), an electric fan (2), an Electronic Expansion Valve ( 3), an inverter Compressor (4), a Receiver (5), a Drier (6) two Heat Exchangers ( 7) and (8), a combined evaporator and condensing Heat Exchanger (9) and an Electronic Expansion Valve (10).
Figure 1 shows the system working in high ambient temperatures, as in late spring, summer and early autumn, the compressor (4) is operating at part load. Superheated refrigerant vapour is discharged and enters a conventional desuperheater (7) which allows the heated water passing through it to absorb sensible heat from the refrigerant.
The refrigerant vapour then enters the Condenser (8) where the latent heat is absorbed by the water passing through the heat exchanger. Also some sub cooling takes place in this heat exchanger.
Liquid refrigerant then passes to the Electronic Expansion Valve (3) and then enters the External Evaporator (1) where it boils off by absorbing heat energy from the air.
The refrigerant, now a superheated vapour re enters the Compressor (4).
Figure 2 shows the system when the ambient temperature drops in winter. The Compressor (4) now runs on full load and now the discharge gas is split between a primary circuit and a secondary circuit.
Some of the superheated discharge vapour enters the primary circuit and is directed by means of solenoid valves into the condensing side of the heat exchanger (9) where it gives off latent heat of change of state to the refrigerant evaporating in the other side of the Heat Exchanger (9). The liquid refrigerant then pasess to the Electronic Expansion Valve (3) and then into the External Evaporator (1) and back to the compressor.
The rest of the superheated discharge vapour from the Compressor (4) is directed into the secondary circuit and passes to the Heat Exchanger (7) where it loses superheat to the water flowing through this heat exchanger and then passes to the Condenser (8) where the rejected latent heat from the refrigerant is given off to the water passing through this heat exchanger. The refrigerant, now in sub cooled liquid form passes to the Electronic Expansion Valve (10) and enters the Heat Exchanger (9) where it absorbs energy from the condensing refrigerant on the other side of the heat exchanger and then, in superheated vapour form passes back to the compressor. An inverter compressor heat pump with energy enhancing combined evaporator and condenser heat exchanger for domestic hot water and heating.
Background
This invention relates to an air to water heat pump for the supply of hot water and heating.
At present, heat pumps are handicapped in that compressor efficiency and heat output drops as ambient temperature drops.
Statement of Invention
To overcome the above problems the invention proposes to increase heating capacity as ambient temperature drops.
The capacity of the system increases by using an inverter drive compressor which is linked to two separate refrigeration circuits. One circuit is linked to an external evaporator while the second circuit, which is only working at low ambient temperatures, is linked to a combined evaporating and condensing heat exchanger which will allow refrigerant from the first circuit to condense on one side while refrigerant in the second circuit evaporates on the other side of the heat exchanger. S 3
Advantages This system, when compared with other systems, allows the system to produce a constant high energy output while increasing system efficiency and reducing running costs.
Example
An Example of the invention will now be described by referring to the accompanying Drawings; fig 1 and fig2, on page 111 Figure 1 and Figure2 show a heat pump which contains an Evaporator (1), an electric fan (2), an Electronic Expansion Valve ( 3), an inverter Compressor (4), a Receiver (5), a Drier (6) two Heat Exchangers ( 7) and (8), a combined evaporator and condensing Heat Exchanger (9) and an Electronic Expansion Valve (10).
Figure 1 shows the system working in high ambient temperatures, as in late spring, summer and early autumn, the compressor (4) is operating at part load. Superheated refrigerant vapour is discharged and enters a conventional desuperheater (7) which allows the heated water passing through it to absorb sensible heat from the refrigerant.
The refrigerant vapour then enters the Condenser (8) where the latent heat is absorbed by the water passing through the heat exchanger. Also some sub cooling takes place in this heat exchanger.
Liquid refrigerant then passes to the Electronic Expansion Valve (3) and then enters the External Evaporator (1) where it boils off by absorbing heat energy from the air.
The refrigerant, now a superheated vapour re enters the Compressor (4).
Figure 2 shows the system when the ambient temperature drops in winter. The Compressor (4) now runs on full load and now the discharge gas is split between a primary circuit and a secondary circuit.
Some of the superheated discharge vapour enters the primary circuit and is directed by means of solenoid valves into the condensing side of the heat exchanger (9) where it gives off latent heat of change of state to the refrigerant evaporating in the other side of the Heat Exchanger (9). The liquid refrigerant then pasess to the Electronic Expansion Valve (3) and then into the External Evaporator (1) and back to the compressor.
The rest of the superheated discharge vapour from the Compressor (4) is directed into the secondary circuit and passes to the Heat Exchanger (7) where it loses superheat to the water flowing through this heat exchanger and then passes to the Condenser (8) where the rejected latent heat from the refrigerant is given off to the water passing through this heat exchanger. The refrigerant, now in sub cooled liquid form passes to the Electronic Expansion Valve (10) and enters the Heat Exchanger (9) where it absorbs energy from the condensing refrigerant on the other side of the heat exchanger and then, in superheated vapour form passes back to the compressor.

Claims (1)

  1. S
    Claims 1. A heat pump with one inverter compressor and two refrigeration circuits which utilises an evaporating and condensing heat exchanger in the second circuit to increase heating capacity.
    S
    Claims 1. A heat pump with one inverter compressor and two refrigeration circuits which utilises an evaporating and condensing heat exchanger in the second circuit to increase heating capacity.
GB0724481A 2007-12-13 2007-12-13 Heat pump comprising an inverter drive compressor Withdrawn GB2455579A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0724481A GB2455579A (en) 2007-12-13 2007-12-13 Heat pump comprising an inverter drive compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0724481A GB2455579A (en) 2007-12-13 2007-12-13 Heat pump comprising an inverter drive compressor

Publications (2)

Publication Number Publication Date
GB0724481D0 GB0724481D0 (en) 2008-01-30
GB2455579A true GB2455579A (en) 2009-06-17

Family

ID=39048161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0724481A Withdrawn GB2455579A (en) 2007-12-13 2007-12-13 Heat pump comprising an inverter drive compressor

Country Status (1)

Country Link
GB (1) GB2455579A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2486646A (en) * 2010-12-20 2012-06-27 Sublogic Mfg Ltd Method and Apparatus for Cascade Refrigeration and for Central Heating Hot Water Supply
CN103542445A (en) * 2012-07-11 2014-01-29 青岛达能环保设备股份有限公司 System for utilizing absorption heat pump to recycle waste heat of circulating water of thermal power plant
CN103968658A (en) * 2013-02-02 2014-08-06 成都市东和兴科节能技术研究所 Drying device by adopting water circulation heating of air source heat pump and water circulation condensation and dehumidification
CN104006648A (en) * 2013-02-21 2014-08-27 成都市东和兴科节能技术研究所 Multi-heat-source-supplied multi-barn independent baking device
CN105757644A (en) * 2016-04-27 2016-07-13 华电电力科学研究院 Energy-saving and emission-reducing system and method for thermal power plant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107289811B (en) * 2017-08-22 2023-03-24 隆华科技集团（洛阳）股份有限公司 Energy-saving automatic control system and method for evaporative cooling/condensing equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100556200B1 (en) * 2005-11-29 2006-03-03 (주)유일멀티하이테크 Heat pump type hot water supply combined use air and water refrirant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100556200B1 (en) * 2005-11-29 2006-03-03 (주)유일멀티하이테크 Heat pump type hot water supply combined use air and water refrirant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2486646A (en) * 2010-12-20 2012-06-27 Sublogic Mfg Ltd Method and Apparatus for Cascade Refrigeration and for Central Heating Hot Water Supply
CN103542445A (en) * 2012-07-11 2014-01-29 青岛达能环保设备股份有限公司 System for utilizing absorption heat pump to recycle waste heat of circulating water of thermal power plant
CN103968658A (en) * 2013-02-02 2014-08-06 成都市东和兴科节能技术研究所 Drying device by adopting water circulation heating of air source heat pump and water circulation condensation and dehumidification
CN103968658B (en) * 2013-02-02 2016-05-18 成都市东和兴科节能技术研究所 A kind of air source heat pump water circulation heating and water circulation dehumidification by condensation drying unit
CN104006648A (en) * 2013-02-21 2014-08-27 成都市东和兴科节能技术研究所 Multi-heat-source-supplied multi-barn independent baking device
CN104006648B (en) * 2013-02-21 2016-08-17 成都市东和兴科节能技术研究所 Various heating sources heat supply multiple stage barn independence apparatus for baking
CN105757644A (en) * 2016-04-27 2016-07-13 华电电力科学研究院 Energy-saving and emission-reducing system and method for thermal power plant

Also Published As

Publication number Publication date
GB0724481D0 (en) 2008-01-30

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)