EP1554142A1 - Verfahren zur verdampfungstemperaturregelung bei einer klimaanlage - Google Patents
Verfahren zur verdampfungstemperaturregelung bei einer klimaanlageInfo
- Publication number
- EP1554142A1 EP1554142A1 EP03808689A EP03808689A EP1554142A1 EP 1554142 A1 EP1554142 A1 EP 1554142A1 EP 03808689 A EP03808689 A EP 03808689A EP 03808689 A EP03808689 A EP 03808689A EP 1554142 A1 EP1554142 A1 EP 1554142A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- evaporator
- temperature
- air conditioning
- conditioning system
- latent
- 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.)
- Ceased
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001704 evaporation Methods 0.000 title claims abstract description 17
- 230000008020 evaporation Effects 0.000 title claims abstract description 15
- 230000007704 transition Effects 0.000 claims abstract description 3
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 claims description 12
- BGHCVCJVXZWKCC-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 claims description 12
- 239000003507 refrigerant Substances 0.000 claims description 4
- 239000002826 coolant Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000011017 operating method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002775 capsule Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
- B60H1/005—Regenerative cooling means, e.g. cold accumulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
- B60H1/322—Control means therefor for improving the stop or idling operation of the engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H2001/3236—Cooling devices information from a variable is obtained
- B60H2001/3255—Cooling devices information from a variable is obtained related to temperature
- B60H2001/3261—Cooling devices information from a variable is obtained related to temperature of the air at an evaporating unit
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0085—Evaporators
-
- 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
Definitions
- the invention relates to a method for evaporative temperature control in an air conditioning system, in particular a vehicle air conditioning system.
- a method for controlling the evaporator temperature in a vehicle air conditioning system is known for example from DE 199 20 093 C1.
- the evaporator temperature should be set to a temperature value that takes into account both comfort and safety aspects. Both the humidity and the required cooling capacity are taken into account.
- Another, outside dew point dependent evaporator temperature control for a motor vehicle air conditioning system is known for example from DE 197 28 578 C2.
- the evaporator temperature is dependent on the difference between the air temperature and the dew point temperature.
- a vehicle air conditioning system with a cold accumulator is known for example from DE 101 56 944 A1.
- a refrigerant evaporator for example, flat tube evaporators, a number of stores filled with a cold storage medium.
- Decanol and tetradecane are mentioned as cold storage media.
- the cold storage medium is cooled to a temperature below the melting point of the cold storage medium during operation of the evaporator. In this way, a latent memory is provided, which enables the cooling to be temporarily maintained when the vehicle and the refrigeration circuit are temporarily at a standstill.
- the invention is based on the object of specifying a method with which an air conditioning system, in particular a vehicle air conditioning system, can be operated particularly economically with a latent cold store.
- the possibility of evaporative temperature control is provided in an air conditioning system having a latent cold store.
- the evaporation temperature of the refrigerant of the air conditioning system is varied as required between a minimum temperature and a maximum temperature below a phase transition temperature of the latent medium.
- the minimum temperature is preferably chosen in such a way that icing of the evaporator is excluded.
- the melting point of the latent medium contained in the latent cold storage is preferably slightly above 0 ° C. Decanol (melting point 7 ° C) and tetradecane (melting point 6 ° C) as well as mixtures containing at least one of these substances are particularly suitable as latent medium.
- the maximum temperature of the evaporator is preferably set to a temperature slightly below the melting point of the latent medium.
- the evaporation temperature is therefore always in a range in which both the full usability of the latent medium is guaranteed and evaporation icing is avoided.
- the method is particularly suitable for air conditioning systems in vehicles that have the so-called idle stop operating mode.
- the vehicle engine is automatically switched off when the vehicle comes to a brief standstill, for example when stopping at traffic lights. This also stops the air conditioning compressor.
- the melting point of the latent medium should be high enough to be able to operate the evaporator in as wide a range as possible with an evaporator temperature control also referred to as ETC (Evaporator Temperature Control).
- the melting point of the latent medium should be low enough to allow a sufficient cooling effect for a limited time when the cooling circuit is at a standstill.
- the cold storage media decanol and tetradecane take these competing conditions into account to a particularly high degree.
- the advantage of the invention is in particular that, by operating an evaporator of a motor vehicle air conditioning system with a controlled evaporation temperature which is limited by the melting point of a latent medium, both a particularly economical operation of the air conditioning system and a temporary maintenance of the cooling operation with the cooling circuit at a standstill are made possible ,
- FIG. 1a and 1b show an evaporator of a vehicle air conditioning system suitable for carrying out the method according to the invention
- FIGS. 2a and 2b each show a device for cooling and reheating air in a vehicle air conditioning system in a schematic cross-sectional illustration, and Figure 3 in a diagram different methods for
- FIGS. 1 a and 1 b show a perspective illustration or a section of an exploded view of an evaporator 1 suitable for carrying out the method according to the invention and designed as a storage evaporator.
- the basic structure of such a storage evaporator is known, for example, from DE 101 56 944 A1.
- the evaporator 1 contains, as part of a vehicle air conditioning system, not shown, a number of flat tubes 2, as a cold store 3 and corrugated fins 4, which lie against each other in the order mentioned so that air to be cooled can flow through the corrugated fins 4 through the evaporator 1.
- Evaporating refrigerant for example R 134a, flows through the flat tubes 2.
- the cold accumulators 3, each coupled to a flat tube 2, are designed as latent cold accumulators and filled with a latent medium, for example decanol or tetradecane, as a heat storage medium.
- a latent medium for example decanol or tetradecane
- the latent media mentioned have the advantage that there is no increase in volume when freezing.
- any other cold storage filled with a latent medium for example in the form of capsules arranged, in particular clamped, between the tubes 2 of the evaporator 1, can also be provided.
- the evaporation temperature in the storage evaporator 1 is regulated in such a way that the latent medium always remains frozen and thus its melting thalpie can be used when the refrigeration cycle is temporarily at a standstill, especially in idle stop mode. At the same time, the evaporation temperature is limited downwards to a value just above 0 ° C to prevent evaporation de-icing.
- a compressor is used in a manner known per se, for example as proposed in DE 199 20 093 C1, the stroke volume of which can be varied.
- FIGS. 2a and 2b illustrate various methods for cooling and at least partially reheating the air flowing through the evaporator 1.
- the air which flows through the evaporator in the flow direction 5 indicated by arrows is provided for the temperature control of three ventilation spaces R1, R2, R3 in the vehicle interior.
- all of the air flowing through the evaporator 1 is fed to a heating element 6a, the heating power of which can be adjusted by means of a valve 7.
- the valve 7 regulates the flow of liquid, in particular water, through the radiator 6a.
- the temperature of the air flowing into the vehicle interior is set to a desired value that is suitable for vehicle air conditioning.
- the evaporator 1 is followed by a heating element 6b, the heating power of which cannot be regulated.
- the regulation of the air outlet temperature takes place in this case by means of a mixing flap 8, which is arranged between the evaporator 1 and the heating element 6b and enables a heating of any partial flow of the air flowing through the evaporator 1.
- the air conditioning system is regulated on the air side.
- FIG. 3 shows in a diagram different methods for temperature control in a motor vehicle air conditioning system. Furthermore, symbolic the silhouette of a vehicle. The temperature profile of the air flowing into the vehicle is shown below this silhouette.
- the air temperature T is recorded as a function of a flow path s for a first conventional operating method V1, a second conventional operating method V2 and the operating method V3 according to the invention.
- V1, V2, V3 for all methods V1, V2, V3, for example, the ambient temperature is 24 ° C, the interior temperature in the vehicle is 20 ° C and the air outlet temperature from the air conditioning system is 12 ° C.
- the air conducted from the outside into the interior of the vehicle first flows through the evaporator 1 and then a heater 6, as shown schematically in FIGS. 2a and b.
- the evaporation temperature cannot be regulated.
- the evaporator 1 is always operated at maximum output.
- the air flowing through the evaporator 1 is cooled to about 0 ° C.
- the air in the radiator 6 is then heated to 12 ° C again.
- This first method V1 requires an unnecessarily high energy consumption.
- the evaporation temperature is adjustable between approx. 0 ° C and approx. 12 ° C.
- the air in the evaporator 1 is only cooled to 12 ° C.
- the radiator 6 connected downstream of the evaporator 1 does not function in this case.
- This second method V2 is characterized by a relatively low energy consumption. With the aid of the second method V2, however, it is not possible to freeze a latent medium, for example decanol or tetradecane, under all operating conditions. The second method V2 is therefore not suitable for a vehicle with an idle stop operating mode.
- the temperature range in which the evaporation temperature can be regulated is the interval between the minimum temperature T m j n set at approx. 0 ° C and the maximum temperature T max set at 6 ° C.
- the evaporator 1 cools the air flowing through it to 6 ° C., so that the latent medium in the latent cold store 3 is just frozen.
- a latent cold store 3 integrated into the evaporator 1 a cold store can also be used, which is arranged between the evaporator 1 and the heating element 6 and is “charged”, ie cooled, by the air stream cooled in the evaporator 1. The air cooled to 6 ° C. is then heated again in the radiator 6 to 12 ° C. This provides economical operation of the air conditioning system, with the latent cold storage 3 remaining charged while the cooling compressor is running.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10247262 | 2002-10-10 | ||
| DE10247262A DE10247262A1 (de) | 2002-10-10 | 2002-10-10 | Verfahren zur Verdampfungstemperaturregelung bei einer Klimaanlage |
| PCT/EP2003/009676 WO2004035335A1 (de) | 2002-10-10 | 2003-09-01 | Verfahren zur verdampfungstemperaturregelung bei einer klimaanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1554142A1 true EP1554142A1 (de) | 2005-07-20 |
Family
ID=32038456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03808689A Ceased EP1554142A1 (de) | 2002-10-10 | 2003-09-01 | Verfahren zur verdampfungstemperaturregelung bei einer klimaanlage |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7251946B2 (de) |
| EP (1) | EP1554142A1 (de) |
| JP (1) | JP2006502903A (de) |
| AU (1) | AU2003266338A1 (de) |
| DE (1) | DE10247262A1 (de) |
| WO (1) | WO2004035335A1 (de) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0326365D0 (en) * | 2003-11-12 | 2003-12-17 | Koninkl Philips Electronics Nv | A radio communication system,a method of operating a communication system,and a mobile station |
| CN100529598C (zh) * | 2004-07-09 | 2009-08-19 | 谷俊杰 | 制冷系统 |
| DE102004055339A1 (de) * | 2004-11-16 | 2006-05-18 | Behr Gmbh & Co. Kg | Klimaanlage mit Kältespeicher |
| DE102004055340A1 (de) * | 2004-11-16 | 2006-05-18 | Behr Gmbh & Co. Kg | Klimaanlage mit Kältespeicher |
| DE102004055343A1 (de) * | 2004-11-16 | 2006-05-18 | Behr Gmbh & Co. Kg | Klimaanlage mit Kältespeicher |
| DE102006011327A1 (de) * | 2006-03-09 | 2007-09-13 | Behr Gmbh & Co. Kg | Wärmeübertrager mit Kältespeicher |
| DE102006021291A1 (de) * | 2006-05-05 | 2007-11-08 | Behr Gmbh & Co. Kg | Verfahren zum Betrieb einer Kraftfahrzeug-Klimaanlage |
| DE102007036299A1 (de) | 2007-07-31 | 2009-02-05 | Behr Gmbh & Co. Kg | Verfahren zum Betreiben einer Klimaanlage |
| US20090191804A1 (en) * | 2008-01-29 | 2009-07-30 | Lakhi Nandlal Goenka | Heating, ventilating, and air conditioning system having a thermal energy exchanger |
| US20090188266A1 (en) * | 2008-01-29 | 2009-07-30 | Stephen Think Hung | Heating, ventilating, and air conditioning system having a thermal energy exchanger |
| JP2009270775A (ja) * | 2008-05-08 | 2009-11-19 | Sanden Corp | 冷凍サイクル |
| RU2411424C2 (ru) * | 2008-05-22 | 2011-02-10 | Сергей Иванович Петров | Способ охлаждения воздуха в замкнутой полости бытового холодильника и устройство для реализации указанного способа |
| US8713959B2 (en) * | 2009-11-25 | 2014-05-06 | Panasonic Corporation | Heat generating body box housing refrigeration device |
| US9464837B2 (en) | 2012-03-21 | 2016-10-11 | Mahle International Gmbh | Phase change material evaporator charging control |
| US9400510B2 (en) | 2012-03-21 | 2016-07-26 | Mahle International Gmbh | Phase change material evaporator charging control |
| US10662358B2 (en) | 2012-12-11 | 2020-05-26 | Kaneka Corporation | Heat storage material composition, heat storage material and transport container |
| EP2842778A1 (de) * | 2013-06-28 | 2015-03-04 | Delphi Technologies, Inc. | Phasenwechselmaterialverdampferladesteuerung |
| US9643468B2 (en) | 2014-08-13 | 2017-05-09 | Fca Us Llc | Regenerative vehicle air conditioning system |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4679410A (en) * | 1986-10-30 | 1987-07-14 | General Motors Corporation | Integral evaporator and accumulator for air conditioning system |
| US4745778A (en) * | 1987-03-27 | 1988-05-24 | General Motors Corporation | Integral evaporator and accumulator for air conditioning system |
| US5180004A (en) * | 1992-06-19 | 1993-01-19 | General Motors Corporation | Integral heater-evaporator core |
| US5505060A (en) * | 1994-09-23 | 1996-04-09 | Kozinski; Richard C. | Integral evaporator and suction accumulator for air conditioning system utilizing refrigerant recirculation |
| JPH08136086A (ja) * | 1994-11-01 | 1996-05-31 | Nippondenso Co Ltd | 冷媒蒸発器 |
| JPH1053019A (ja) | 1996-06-03 | 1998-02-24 | Denso Corp | 車両用空調装置 |
| US5931020A (en) * | 1997-02-28 | 1999-08-03 | Denso Corporation | Refrigerant evaporator having a plurality of tubes |
| DE19728578C2 (de) | 1997-07-04 | 1999-11-25 | Daimler Chrysler Ag | Verfahren zur außentaupunktabhängigen Verdampfertemperatursteuerung |
| DE19745028A1 (de) * | 1997-10-11 | 1999-04-15 | Behr Gmbh & Co | Verfahren und Vorrichtung zur verdampfervereisungsgeschützten Klimaanlagensteuerung |
| JP3972501B2 (ja) * | 1999-01-18 | 2007-09-05 | 株式会社デンソー | 蓄熱用熱交換装置および車両用空調装置 |
| JP3879296B2 (ja) * | 1999-01-19 | 2007-02-07 | 株式会社デンソー | 熱交換器 |
| DE19920093C1 (de) * | 1999-05-03 | 2000-09-28 | Bayerische Motoren Werke Ag | Verfahren zur Regelung der Verdampfertemperatur bei einer Fahrzeug-Klimaanlage |
| US6185957B1 (en) * | 1999-09-07 | 2001-02-13 | Modine Manufacturing Company | Combined evaporator/accumulator/suctionline heat exchanger |
| JP2001153489A (ja) * | 1999-11-30 | 2001-06-08 | Showa Alum Corp | アキュームレータ一体型蒸発器 |
| DE10124757A1 (de) | 2000-05-26 | 2001-11-29 | Denso Corp | Fahrzeugklimaanlage mit Kältespeicher |
| DE50109051D1 (de) * | 2001-01-05 | 2006-04-27 | Behr Gmbh & Co Kg | Klimaanlage für ein Kraftfahrzeug |
| DE20115273U1 (de) * | 2001-01-05 | 2002-05-08 | Behr GmbH & Co., 70469 Stuttgart | Klimaanlage für ein Kraftfahrzeug |
-
2002
- 2002-10-10 DE DE10247262A patent/DE10247262A1/de not_active Withdrawn
-
2003
- 2003-09-01 JP JP2004544016A patent/JP2006502903A/ja active Pending
- 2003-09-01 US US10/530,760 patent/US7251946B2/en not_active Expired - Lifetime
- 2003-09-01 AU AU2003266338A patent/AU2003266338A1/en not_active Abandoned
- 2003-09-01 WO PCT/EP2003/009676 patent/WO2004035335A1/de not_active Ceased
- 2003-09-01 EP EP03808689A patent/EP1554142A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004035335A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006502903A (ja) | 2006-01-26 |
| WO2004035335A1 (de) | 2004-04-29 |
| AU2003266338A1 (en) | 2004-05-04 |
| US20060000232A1 (en) | 2006-01-05 |
| DE10247262A1 (de) | 2004-04-22 |
| US7251946B2 (en) | 2007-08-07 |
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