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WO1993016340A1 - Dispositif et procede visant a ameliorer le coefficient de rendement de systemes frigorifiques - Google Patents

Dispositif et procede visant a ameliorer le coefficient de rendement de systemes frigorifiques Download PDF

Info

Publication number
WO1993016340A1
WO1993016340A1 PCT/DE1992/000342 DE9200342W WO9316340A1 WO 1993016340 A1 WO1993016340 A1 WO 1993016340A1 DE 9200342 W DE9200342 W DE 9200342W WO 9316340 A1 WO9316340 A1 WO 9316340A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
expansion valve
condenser
refrigerant
compressor
Prior art date
Application number
PCT/DE1992/000342
Other languages
German (de)
English (en)
Inventor
Ulf Greufe
Original Assignee
Ulf Greufe
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 Ulf Greufe filed Critical Ulf Greufe
Publication of WO1993016340A1 publication Critical patent/WO1993016340A1/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
    • F25B41/00—Fluid-circulation arrangements

Definitions

  • the common refrigerant cycle is maintained by the
  • Time period of the condenser is too large.
  • the systems of conventional design have a relatively low overall efficiency with a relatively high power consumption.
  • the invention specified in claim 1 is based on the problem of maintaining the refrigerant circuit, particularly in the cold winter months, and to achieve an increase in the overall efficiency of the system while reducing the power consumption.
  • a modification of the cycle is achieved by installing a refrigerant pump.
  • a Hermetic pump can be installed after your liquid collector. This pump must be arranged in such a way that it is always supplied with sufficient refrigerant. After the refrigerant pump on the pressure side is a Q-max orifice, which must be installed and calculated in such a way that overloading of the stator winding is avoided.
  • Refrigerant mass flow is moved in gaseous form via the suction line to the compressor.
  • the compressor compresses the refrigerant gas to a fairly low pressure level, which means that very little compression work is required.
  • the pressure line goes to the condenser, the condenser, which is always too large in the winter months, is now fully usable. Accordingly, performance figures from 7.0.9 can even be driven up to performance figure 10. This means that with 1 KW of power supplied in the compressor, we transport up to 10 KW of cooling power via the evaporator.
  • the refrigerant from the condenser returns to the liquid collector with a very strong subcooling. This has the consequence that - seen from the circular process - quite high enthalpy differences arise.
  • Performance figure improvements can be achieved that are between 5 and 6 in the climate range, which was previously not considered possible.
  • the main use of the invention is that the above problems can be solved in all process and air conditioning systems.
  • a refrigerant pump was used in a customer's system in order to ensure a sufficient refrigerant mass flow through the system with a lower pressure on the condenser side.
  • a Bock motor compressor type DAM 5 / 724-4, refrigerant R22 was used.
  • the system mentioned above is a system with 2 compressors.
  • the built-in refrigerant pump has an absorption capacity of 2 KW.
  • the actual state of the system was evaporation temperature: - 10 ° C; the condensation temperature was at 53 ° C; the
  • the evaporation temperature was + - 0 C; the condensing temperature at 32 ° C; the net cooling capacity at 83 KW; at lower power consumption of the compressor.
  • the supply of mechanical energy can be done by the usual methods such as Electric motor or turbocharger.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Dans les systèmes frigorifiques habituels, il survient fréquemment des pannes, notamment pendant les mois d'hiver, car à cette période le condenseur est surdimensionné. Le rendement global des installations demeure de ce fait dans des limites relativement basses. Afin de pallier ce problème technique, de l'énergie mécanique a été introduite dans le circuit à l'aide d'une pompe, entre le collecteur de liquide et la soupape de détente. Afin de protéger la source d'énergie, on y a monté un régulateur-maxi, ainsi qu'un régulateur-mini. L'énergie mécanique peut également être introduite autrement que par une pompe, en appliquant par exemple le principe du turbocompresseur. Ce procédé et le dispositif correspondant peuvent être utilisés pour tous les groupes à pistons à eau froide ainsi que les installations de traitement par le froid.
PCT/DE1992/000342 1992-02-11 1992-04-29 Dispositif et procede visant a ameliorer le coefficient de rendement de systemes frigorifiques WO1993016340A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924203983 DE4203983A1 (de) 1992-02-11 1992-02-11 Vorrichtung und verfahren zur leistungszifferverbesserung im kaeltemittelkreislauf
DEP4203983.5 1992-02-11

Publications (1)

Publication Number Publication Date
WO1993016340A1 true WO1993016340A1 (fr) 1993-08-19

Family

ID=6451422

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000342 WO1993016340A1 (fr) 1992-02-11 1992-04-29 Dispositif et procede visant a ameliorer le coefficient de rendement de systemes frigorifiques

Country Status (3)

Country Link
AU (1) AU1795292A (fr)
DE (1) DE4203983A1 (fr)
WO (1) WO1993016340A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7052847B2 (en) 1999-05-19 2006-05-30 Cornell Research Foundation, Inc. Method for sequencing nucleic acid molecules

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949750A (en) * 1956-05-28 1960-08-23 Mercer Engineering Co Heat exchange system of the evaporative type with means for maintaining liquid supply line pressure
DE1095670B (de) * 1956-11-06 1960-12-22 Integral Ltd Fluessigkeitspumpe
US3081606A (en) * 1961-03-06 1963-03-19 United Aircraft Corp Refrigeration system for low temperature operation
US3111815A (en) * 1962-04-20 1963-11-26 Westinghouse Electric Corp Controls for refrigeration systems having air cooled condensers
US3600108A (en) * 1968-08-26 1971-08-17 Toyoda Machine Works Ltd Rotary pump
DE2716559A1 (de) * 1976-04-14 1977-10-20 Micron Lubrotec Ateliers Elect Hydraulische schmierzentrale
US4096706A (en) * 1977-03-09 1978-06-27 Sterling Beckwith Free condensing liquid retro-pumping refrigerator system and method
DE3415000A1 (de) * 1984-04-19 1985-10-31 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zum betreiben eines kreislaufsystems
US4599873A (en) * 1984-01-31 1986-07-15 Hyde Robert E Apparatus for maximizing refrigeration capacity

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949750A (en) * 1956-05-28 1960-08-23 Mercer Engineering Co Heat exchange system of the evaporative type with means for maintaining liquid supply line pressure
DE1095670B (de) * 1956-11-06 1960-12-22 Integral Ltd Fluessigkeitspumpe
US3081606A (en) * 1961-03-06 1963-03-19 United Aircraft Corp Refrigeration system for low temperature operation
US3111815A (en) * 1962-04-20 1963-11-26 Westinghouse Electric Corp Controls for refrigeration systems having air cooled condensers
US3600108A (en) * 1968-08-26 1971-08-17 Toyoda Machine Works Ltd Rotary pump
DE2716559A1 (de) * 1976-04-14 1977-10-20 Micron Lubrotec Ateliers Elect Hydraulische schmierzentrale
US4096706A (en) * 1977-03-09 1978-06-27 Sterling Beckwith Free condensing liquid retro-pumping refrigerator system and method
US4599873A (en) * 1984-01-31 1986-07-15 Hyde Robert E Apparatus for maximizing refrigeration capacity
DE3415000A1 (de) * 1984-04-19 1985-10-31 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zum betreiben eines kreislaufsystems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7052847B2 (en) 1999-05-19 2006-05-30 Cornell Research Foundation, Inc. Method for sequencing nucleic acid molecules

Also Published As

Publication number Publication date
AU1795292A (en) 1993-09-03
DE4203983A1 (de) 1992-08-20

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