WO1982000053A1 - Pompe a chaleur - Google Patents

Pompe a chaleur Download PDF

Info

Publication number
WO1982000053A1
WO1982000053A1 PCT/GB1981/000108 GB8100108W WO8200053A1 WO 1982000053 A1 WO1982000053 A1 WO 1982000053A1 GB 8100108 W GB8100108 W GB 8100108W WO 8200053 A1 WO8200053 A1 WO 8200053A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
tubes
refrigerant
heat
heat exchanger
Prior art date
Application number
PCT/GB1981/000108
Other languages
English (en)
Inventor
Heating Ltd Thermo
Original Assignee
Nickels J
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 Nickels J filed Critical Nickels J
Priority to AU72951/81A priority Critical patent/AU7295181A/en
Publication of WO1982000053A1 publication Critical patent/WO1982000053A1/fr

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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/022—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers

Definitions

  • This invention relates to an air-to-water heat pump and to a heat exchanger theretofor.
  • an air-to-water heat pump has a closed refrigerant circuit in which a gaseous refrigerant at low pressure is fed to a compressor, to be compressed and fed therefrom at high pressure to a condenser consisting of a heat exchanger from which it leaves in liquid form having given up heat.
  • the liquid refrigerant flows from the heat exchanger to an expansion valve thence to an evaporator in which the refrigerant boils, changing from liquid to low pressure gas taking in heat from the atmosphere and is fed to the compressor.
  • a water circuit passes through the heat exchanger in counterflow to the refrigerant and the water therein is heated by the refrigerant as it passes through the circuit.
  • An object of the present invention is to provide a heat pump which can give initial. flow water temperatures of 82° C. (180° F. ) at a relatively low condensing temperature of 55° C. (130° F. ) .
  • a heat pump in which the condenser consists of at least one first heat exchanger which comprises a cylinder into and out of which refrigerant flows, and in which there are two or more co-axial tubes arranged to define through the cylinder a snake-like passage formed by the annular gaps between the tubes and cylinder with a continuous water coil spirally wound therethrough, the coil and tubes being of heat-conductive material.
  • two first heat exchangers are provided in series.
  • the condenser includes a second heat exchanger.
  • a heat exchanger comprising a cylinder into and out of which refrigerant flows, and in which there are two or more co-axial tubes arranged to define through the cylinder a snake-like passage formed by the annular gaps between the tubes and cylinder with a continuous water coil spirally wound therethrough, the coil and tubes being of a heat-conductive material.
  • three tubes are provided. The turns of the coil are preferably in abutment with each other and with the tubes and cylinder.
  • a heat pump means to control condensing pressures and temperatures of a refrigerant, the means comprising a pre-heater refrigerant circuit comprising a series run of tubing provided in the evaporator, the circuit being on the outlet side of the condenser and being brought into use on operation of a constant pressure regulator actuable on a determined discharge pressure being reached, and a non-return valve being provided to prevent back-flow of refrigerant when the regulator is closed.
  • FIG. 1 is a circuit diagram of a heat pump according to the present invention
  • Fig. 2 is a schematic cross-sectional view of a heat exchanger for the heat pump.
  • Fig. 3 is a schematic cross-sectional view on the line III-III of Fig. 2.
  • a heat pump has a condenser consisting of a first heat exchanger 10 and a second heat exchanger 11.
  • the first heat exchanger 10 comprises a cylinder 12 into and out of which gaseous refrigerant flows.
  • Mounted inside and co-axially with the cylinder 12 are three co-axial tubes 13, 14, and 15.
  • the annular gap 16 between adjacent tubes and cylinder 12 is the same width.
  • Tube 13 is closed at both ends, and tubes 14 and 15 are closed at alternate ends 14A and 15A, tube 14 being open at the inlet end of the cylinder 12.
  • the gaps 16 and open ends of tubes 14 and 15 form a snake-like passage which houses a continuous water coil 17 spirally wound lengthwise of each gap 16.
  • the inlet end of the coil 17 is at 'one end of the cylinder 12 and the coil 17 is wound along the gap between the cylinder 12 and tube 15 towards the other end of the cylinder 12 into the gap between tubes 14 and 15, therealong, into the gap between tubes 13 and 14 and therealong to exit from the cylinder at the opposite end of the cylinder from its entrance.
  • the tubes and coil 17 are of heat-conductive material, for example copper, and the cylinder 12 is of steel, insulated on the outside, for example by a glass reinforced plastics cover. The coil 17 is tightly wound with each turn touching the other, and touching the sides of the tubes and cylinder.
  • the second heat exchanger 11 is a tank 18 through which a coil 19 carrying refrigerant is located, water being fed from a source by piping 20 into the tank 18 at the bottom and exhausting by piping 21 from adjacent to the top thereof, the piping 21 being connected to the inlet of the coil 17.
  • Means to control condensing pressures and temperatures of the refrigerant are provided and comprise a pre-heater refrigerant circuit 24 consisting of a series run of tubing 22 which is provided in a finned block (not shown) of an evaporator 23.
  • the circuit 24 is on the outlet side of the second heat exchanger 11 from piping 30 and is brought into use on operation of a constant pressure regulator 25 actuable on a determined discharge pressure being reached in the output flow of refrigerant from a compressor 26.
  • a pressure line 27 is provided from pipe 28 from the compressor 26 to cylinder 12, to control the constant pressure regulator 25.
  • a non-return valve 29 is provided to prevent back-flow of refrigerant when the regulator is closed, the circuit 24 being reconnected to piping 31 connecting piping 30 to a drier 32.
  • the outlet of drier 32 is connected by piping 33 to an expansion valve 34 which feeds via piping 37 into the evaporator 23.
  • a bleed line 35 having a solenoid 36 interposed therein connects piping 28 to piping 37 to provide hot gas to defrost evaporator 23, the solenoid 36 being actuated by a time clock at preset intervals.
  • a line 38 is connected from expansion valve 34 and is a thermostatic sensor to control expansion valve 34 to govern flow of liquid refrigerant from the evaporator 23.
  • Piping 39 connects evaporator 23 to a suction accumulator 40.
  • Piping 41 connects this accumulator 40 to the compressor 26.
  • the suction accumulator 40 converts the liquid refrigerant to a gaseous form before allowing it to flow on to the compressor 26.
  • the water circuit is counterflowing in that the water enteis heat exchanger 11 point where it is heated slightly before entering heat exchanger 10 (at the point where the refrigerant leaves heat exchanger 10) .
  • the water leaves the exchanger 10 at the point of entry of the refrigerant gases where these gases are at their hottest. The water is then pumped through the source to be heated.
  • constant pressure regulator 25 opens allowing the refrigerant to flow into the pre-heater circuit 24; at which pressure the condensing temperature reaches 55° C. (130° F.). Due to this circuit 24 being placed in front of the evaporator 23, the air ambient to the finned block causes the pre-heater 24 to become another condenser removing heat from the refrigerant gases thereby controlling the condensing pressure and temperatures.
  • the constant pressure regulator 25 controls the refrigerant flow and the outlet of the pre-heater circuit 24 joins the liquid line 31 and normal flow is achieved.
  • a heat exchanger 10 above-described can be used for purposes other than for incorporation into a heat pump, and can be used in a water-to-water circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Dans et pour une pompe a chaleur, un condenseur possede un echangeur de chaleur (10) comprenant un cylindre (12) dans lequel et hors duquel un liquide de refrigeration s'ecoule. Deux ou plusieurs tubes coaxiaux (13, 14, 15) sont prevus pour definir au travers du cylindre un passage en forme de serpentin forme par les espaces annulaires (16) entre les tubes et le cylindre avec un serpentin d'eau continu (17) enroule en spirale au travers de ceux-ci. Des pressions et des temperatures de condensation du liquide de refrigeration sont commandees par un circuit de refrigeration avec prechauffage (24) comprenant une serie de tubes (22) montes dans un evaporateur (23), Le circuit se trouve du cote de la sortie du condenseur et est mis en fonctionnement lorsqu'un regulateur a pression constante (25) est mis en marche lorsqu'une pression determinee est atteinte. Une vanne anti-retour (29) est prevue pour empecher le retour d'ecoulement du liquide refrigerant lorsque le regulateur est ferme.
PCT/GB1981/000108 1980-06-25 1981-06-25 Pompe a chaleur WO1982000053A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU72951/81A AU7295181A (en) 1980-06-25 1981-06-25 Heat pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8020772 1980-06-25
GB8020772800625 1980-06-25

Publications (1)

Publication Number Publication Date
WO1982000053A1 true WO1982000053A1 (fr) 1982-01-07

Family

ID=10514307

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1981/000108 WO1982000053A1 (fr) 1980-06-25 1981-06-25 Pompe a chaleur

Country Status (2)

Country Link
EP (1) EP0055263A1 (fr)
WO (1) WO1982000053A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239837A2 (fr) * 1986-03-20 1987-10-07 BROWN, BOVERI - YORK Kälte- und Klimatechnik Procédé pour la récupération de la chaleur de condensation d'un système frigorifique et système frigorifique pour la mise en oeuvre du procédé
GB2295888A (en) * 1994-10-28 1996-06-12 Bl Refrigeration & Airco Ltd Heating and cooling system for a building
US5673567A (en) * 1995-11-17 1997-10-07 Serge Dube Refrigeration system with heat reclaim and method of operation
GB2312495A (en) * 1996-04-25 1997-10-29 Micklewright Charles Anthony Combined condenser and heat exchanger unit
WO1999054675A3 (fr) * 1998-04-21 2000-02-10 Vita International Inc Echangeur thermique polyphase
US6047767A (en) * 1998-04-21 2000-04-11 Vita International, Inc. Heat exchanger
WO2015075394A1 (fr) * 2013-11-22 2015-05-28 Dynaes Procede d'augmentation du rendement d'un dispositif thermodynamique a fluide frigorigene

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499105A (en) * 1920-06-04 1924-06-24 Justus C Goosmann Condenser
US1922149A (en) * 1932-05-14 1933-08-15 Arnold W Baumann Counter-current cooler
US2739452A (en) * 1954-10-04 1956-03-27 Adiel Y Dodge Refrigerating system
CH329164A (de) * 1953-09-03 1958-04-15 Licentia Gmbh Kücheneinrichtung mit elektrisch betriebener Kleinkälteanlage
US2954965A (en) * 1959-01-22 1960-10-04 Technical Engineered Products Multi-unit sample cooler
GB1116537A (en) * 1965-08-05 1968-06-06 Cvi Corp Heat exchangers
GB1254045A (en) * 1968-07-31 1971-11-17 Borg Warner Heat exchanger
US3765192A (en) * 1972-08-17 1973-10-16 D Root Evaporator and/or condenser for refrigeration or heat pump systems
US4089667A (en) * 1976-10-27 1978-05-16 Sun-Econ, Inc. Heat extraction or reclamation apparatus for refrigerating and air conditioning systems
FR2378242A1 (fr) * 1977-01-19 1978-08-18 Vironneau Pierre Procede de recuperation de calories sur une centrale frigorifique et installation le mettant en oeuvre
DE2711144A1 (de) * 1977-03-15 1978-09-28 Hannover Braunschweigische Str Verfahren zum betrieb einer waermepumpe
US4146089A (en) * 1976-03-29 1979-03-27 Paul Mueller Company Hot water system and condensing unit therefor
CA1068917A (fr) * 1977-10-31 1980-01-01 Derrick A. Smith Extracteur de chaleur utile des gaz de refrigeration
GB1558563A (en) * 1976-09-14 1980-01-03 Hammond J A Heat recovery from a compression refrigeration machine to heat water
GB1559318A (en) * 1977-08-12 1980-01-16 Hammond J A Heat recovery

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499105A (en) * 1920-06-04 1924-06-24 Justus C Goosmann Condenser
US1922149A (en) * 1932-05-14 1933-08-15 Arnold W Baumann Counter-current cooler
CH329164A (de) * 1953-09-03 1958-04-15 Licentia Gmbh Kücheneinrichtung mit elektrisch betriebener Kleinkälteanlage
US2739452A (en) * 1954-10-04 1956-03-27 Adiel Y Dodge Refrigerating system
US2954965A (en) * 1959-01-22 1960-10-04 Technical Engineered Products Multi-unit sample cooler
GB1116537A (en) * 1965-08-05 1968-06-06 Cvi Corp Heat exchangers
GB1254045A (en) * 1968-07-31 1971-11-17 Borg Warner Heat exchanger
US3765192A (en) * 1972-08-17 1973-10-16 D Root Evaporator and/or condenser for refrigeration or heat pump systems
US4146089A (en) * 1976-03-29 1979-03-27 Paul Mueller Company Hot water system and condensing unit therefor
GB1558563A (en) * 1976-09-14 1980-01-03 Hammond J A Heat recovery from a compression refrigeration machine to heat water
US4089667A (en) * 1976-10-27 1978-05-16 Sun-Econ, Inc. Heat extraction or reclamation apparatus for refrigerating and air conditioning systems
FR2378242A1 (fr) * 1977-01-19 1978-08-18 Vironneau Pierre Procede de recuperation de calories sur une centrale frigorifique et installation le mettant en oeuvre
DE2711144A1 (de) * 1977-03-15 1978-09-28 Hannover Braunschweigische Str Verfahren zum betrieb einer waermepumpe
GB1559318A (en) * 1977-08-12 1980-01-16 Hammond J A Heat recovery
CA1068917A (fr) * 1977-10-31 1980-01-01 Derrick A. Smith Extracteur de chaleur utile des gaz de refrigeration

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239837A2 (fr) * 1986-03-20 1987-10-07 BROWN, BOVERI - YORK Kälte- und Klimatechnik Procédé pour la récupération de la chaleur de condensation d'un système frigorifique et système frigorifique pour la mise en oeuvre du procédé
EP0239837A3 (fr) * 1986-03-20 1990-03-28 BROWN, BOVERI - YORK Kälte- und Klimatechnik Procédé pour la récupération de la chaleur de condensation d'un système frigorifique et système frigorifique pour la mise en oeuvre du procédé
GB2295888A (en) * 1994-10-28 1996-06-12 Bl Refrigeration & Airco Ltd Heating and cooling system for a building
GB2295888B (en) * 1994-10-28 1999-01-27 Bl Refrigeration & Airco Ltd Heating and cooling system
US5673567A (en) * 1995-11-17 1997-10-07 Serge Dube Refrigeration system with heat reclaim and method of operation
GB2312495A (en) * 1996-04-25 1997-10-29 Micklewright Charles Anthony Combined condenser and heat exchanger unit
WO1999054675A3 (fr) * 1998-04-21 2000-02-10 Vita International Inc Echangeur thermique polyphase
US6047767A (en) * 1998-04-21 2000-04-11 Vita International, Inc. Heat exchanger
US6345508B1 (en) 1998-04-21 2002-02-12 Vita International, Inc. Heat exchanger
WO2015075394A1 (fr) * 2013-11-22 2015-05-28 Dynaes Procede d'augmentation du rendement d'un dispositif thermodynamique a fluide frigorigene

Also Published As

Publication number Publication date
EP0055263A1 (fr) 1982-07-07

Similar Documents

Publication Publication Date Title
US4301662A (en) Vapor-jet heat pump
US5136855A (en) Heat pump having an accumulator with refrigerant level sensor
US3392541A (en) Plural compressor reverse cycle refrigeration or heat pump system
US4391104A (en) Cascade heat pump for heating water and for cooling or heating a comfort zone
CA1179160A (fr) Systeme de commande pour thermopompe bifonction
NO773656L (no) Fremgangsmaate og anordning for gjenvinning av varme
US7266959B2 (en) Cold climate air-source heat pump
US4171623A (en) Thermal economizer application for a centrifugal refrigeration machine
US4268291A (en) Series compressor refrigeration circuit with liquid quench and compressor by-pass
US3365902A (en) Reverse cycle refrigeration system
US4476922A (en) Forced bilateral thermosiphon loop
US6018958A (en) Dry suction industrial ammonia refrigeration system
US4267705A (en) Refrigeration purging system
US5400613A (en) Purger for refrigeration system
WO1982000053A1 (fr) Pompe a chaleur
US4306420A (en) Series compressor refrigeration circuit with liquid quench and compressor by-pass
CN208832629U (zh) 一种低温冷水机组
CN207922617U (zh) 一种带接水盘融冰管路的热泵系统
US2892320A (en) Liquid level control in refrigeration system
US4934451A (en) Apparatus and method for conditioning air
EP0107495A3 (fr) Circulations de chauffage et de refroidissement combinées
US2740263A (en) Feed control means for refrigerating apparatus
FI68901C (fi) Vaermepump
CN214172556U (zh) 一种二氧化碳热泵供水机组
US2959937A (en) Refrigeration system for air conditioning units

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU DK FI NO US

Designated state(s): AU DK FI NO US

AL Designated countries for regional patents

Designated state(s): AT CH DE GB FR NL SE

Kind code of ref document: A1

Designated state(s): AT CH DE GB FR NL SE