EP0943882A2 - Trockenkühlturm für die hybride Verflüssigung von Kältemitteln - Google Patents
Trockenkühlturm für die hybride Verflüssigung von Kältemitteln Download PDFInfo
- Publication number
- EP0943882A2 EP0943882A2 EP99103889A EP99103889A EP0943882A2 EP 0943882 A2 EP0943882 A2 EP 0943882A2 EP 99103889 A EP99103889 A EP 99103889A EP 99103889 A EP99103889 A EP 99103889A EP 0943882 A2 EP0943882 A2 EP 0943882A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling tower
- condenser
- dry cooling
- dry
- tower according
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 55
- 239000003507 refrigerant Substances 0.000 title claims description 20
- 230000005494 condensation Effects 0.000 title 1
- 238000009833 condensation Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000002826 coolant Substances 0.000 claims abstract description 6
- 239000003570 air Substances 0.000 claims description 20
- 238000009736 wetting Methods 0.000 claims description 14
- 239000012080 ambient air Substances 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 5
- 238000003915 air pollution Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010196 hermaphroditism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
-
- 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
- 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
- F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
- F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
-
- 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
- F25B2339/041—Details of condensers of evaporative 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
Definitions
- the invention relates to a dry cooling tower for the hybrid liquefaction of refrigerants, with a water-wettable, air-side heat transfer surface to liquefy the refrigerant by means of ambient air drawn in as a coolant by means of at least one fan and evaporation of circulated water.
- Hybrid dry air coolers are known (EP 428 647 B1), in which the medium to be cooled, for example water or water-glycol mixture, the primary cooling circuit Flows through the fin heat exchanger and the cooling fins to the air flow to be removed Emits heat. Fans draw the air flow through the heat exchanger and always have the same speed.
- the wetting water is integrated in the cooler Collecting tray in open channels via two V-shaped heat exchanger elements pumped where it is unaffected by the air flow on the air side heat transfer surface is abandoned. The excess drips directly under the heat exchanger elements Water back into the collecting bowl.
- Such dry cooling towers are normally set to a maximum allowable air pollution designed, which is given by the fact that when the heat exchanger is wetted, no drip flight arises.
- hybrid here means the hermaphrodite mode of operation of the drying tower, namely once without wetting the heat exchanger with water and secondly with wetting.
- the object of the invention is now to design the dry cooling tower so that it suitable for the hybrid liquefaction of refrigerants.
- the dry cooling tower has a heat exchanger has by which to heat or pre-cool the hot gas of the refrigerant dry ambient air is divided into a desuperheater and a condenser, the latter wettable with water and the desuperheater for the liquefaction and subcooling of the hot gas is connected downstream and both the desuperheater and the condenser are flowed through by cooling air become.
- variable-speed fans can be used a fact that is essential in cases where the cooling tower / condenser works below the design point and in the partial load range because then the power consumption and thus the power consumption of the fans is considerably lower.
- water is also saved because the air pollution decreases the proportion of convective heat emission increases.
- the wetting water tends to increase on the colder Trickle down the heat exchanger part.
- the one located in the warmer heat exchanger part The lamella surface remains dry and transfers sensitive heat to the pre-cooled air. Through the reduced evaporation surface, less latent heat is dissipated and water consumption decreases significantly.
- a device can be located in the area of the remaining part of the upper end face Provide for the water to be used to wet the condenser.
- the cooling tower head 13 is equipped with a fan 11 which is driven by a motor 14 is, whose speed is adjustable and the cooling air in the direction of arrows A in the Sucks in the tower, which leaves it again in the direction of arrow B on the tower head.
- a heat exchanger 2 which is inclined to the longitudinal axis 6, so that it with its counterpart on the other side of this axis forms a V-arrangement which forms the Küblturmkopf 13 expanded.
- the heat exchanger 2 consists of a desuperheater 3 and a condenser 4, which is arranged below the desuperheater and thus further from the cooling tower head is more distant than the desuperheater.
- the desuperheater is used to heat or pre-cool the hot gas of the refrigerant that is supplied at the hot gas inlet 15.
- the desuperheater 3 is expediently, just like the condenser 4 connected to it, a finned heat exchanger.
- the condenser can be wetted with water, which is applied to its upper end face 8 with the aid of a device 9 and, together with the cooling air, serves to liquefy and subcool the gaseous refrigerant, for example NH 3 .
- the desuperheater 3 and the condenser 4 are offset from one another arranged that the lower end face 7 of the desuperheater 3 only part of the upper end face 8 of the Condenser 4 covered, so that in the area of the remaining part of the upper end face 8 over a device 9 water can be given to the condenser to its heat exchange surface to wet.
- the pipe coil 12 of the desuperheater 3 carrying the refrigerant goes directly into the raw coil 10 leading the refrigerant of the condenser 4.
- the wetting water applied to the fins of the condenser with the aid of the feed device 9 is from a tub 21 at the bottom of the dry cooling tower with the help of a pump 19 supplied via a riser 16 and after draining from the condenser in the above Tub collected again.
- a fresh water connection 17 is used to evaporate Add water while the water level in the tub 21 using a level probe 18th is kept at a desired level. This probe influences the fresh water supply 17.
- the level probe also serves to protect the pump 19 from running dry.
- the hybrid liquefaction of the refrigerant, using the heat exchanger described above 2 is achieved has the advantage that the hot refrigerant gas, for example with a Temperature of 130 ° C at 15 enters the desuperheater 3, initially only cooled with cooling air so far is, for example at 40 ° C, that then liquefaction in the condenser 4 with the help of cooling air and wetting water can take place without the latter evaporating too much.
- the liquefied coolant then emerges at 23 from the finned heat exchanger 4, for example a temperature of 38 ° C.
- the cooling capacity of the ambient air drawn in as cooling air is thermal by air temperature control and / or mechanically by means of the heat exchanger downstream baffles depending on the temperature of the hot gas of the refrigerant adjustable.
- the heater and also the condenser can improve the Wetting the condenser with water within the cooling tower in a structurally separate manner Form units.
- the condenser as well as the heater can consist of several independent, interconnected units exist that are connected in parallel or in series are.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
- Fig. 1
- eine schematische Seitenansicht der einen Hälfte des Trockenkühlturms und
- Fig. 2
- eine im Vergleich zu Fig. 1 vergrößerte schematische Seitenansicht des Wärmeaustauschers des Trockenkühlturms, bestehend aus einem hybriden Verflüssiger und einem separaten, trockenen Enthitzer für das Heißgas oberhalb des Verflüssigers.
Claims (12)
- Trockenkühlturm für die hybride Verflüssigung von Kältemitteln, mit einer wasserbenetzbaren, luftseitigen Wärmeübertragungsfläche zur Verflüssigung des Kältemittels durch mittels wenigstens einen Ventilator angesaugter Umgebungsluft als Kühlmittel und Verdunstung von im Kreislauf geführten Wasser, dadurch gekennzeichnet, daß der Trockerkühlturm (1) einen Wärmeaustauscher (2) aufweist, der zur Enthitzung bzw. Vorkühlung des Heißgases des Kältemittels durch trockene Umgebungsluft in einen Enthitzer (3) und einen Verflüssiger (4) aufgeteilt ist, wobei letzterer mit Wasser benetzbar und zwecks Verflüssigung und Unterkühlung des Heißgases dem Enthitzer nachgeschaltet ist und sowohl der Enthitzer als auch der Verflüssiger von Kühlluft durchströmt werden.
- Trockenkühlturm nach Anspruch 1, dadurch gekennzeichnet, daß der Enthitzer (3) und der Verflüssiger (4) Wärmeaustauscher sind, die bezüglich ihrer Längsachse (5), die zur Längsachse (6) des Trockenkühlturms geneigt ist, gegeneinander versetzt sind.
- Trockenkühlturm nach Anspruch 1, dadurch gekennzeichnet, daß die Wärmeaustauscher (3, 4) Lamellenwärmeaustauscher sind.
- Trockenkühlturm nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Wärmeaustauscher (3, 4) so zueinander versetzt sind, daß die untere Stirnseite (7) des Enthitzers (3) nur einen Teil der oberen Stirnseite (8) des Verflüssigers (4) bedeckt und daß im Bereich des freibleibenden Teils der oberen Stirnseite (8) eine Vorrichtung (9) zur Aufgabe des Wassers vorgesehen ist, mit dem der Verflüssiger benetzt wird.
- Trockenkühlturm nach einem der Ansprüche 2 - 4, dadurch gekennzeichnet, daß die das Kältemittel führende Rohrschlange (12) des Enthitzers (3) direkt in die das Kältemittel des Verflüssigers (4) führende Rohrschlange (10) übergeht.
- Trockenkühlturm nach einem der Ansprüche 2 - 5, dadurch gekennzeichnet, daß in bezug auf die Längsachse (6) des Trockenkühlturms (1) zwei Wärmeaustauscher (2) einander gegenüberliegend angeordnet sind, so daß sie mit ihren Längsachsen (5) ein V bilden.
- Trockenkühlturm nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß der Kühlluftstrom mit Hilfe wenigstens eines Ventilators (11), dessen Drehzahl regulierbar ist, durch den Turm hindurchsaugbar ist.
- Trockehkühlturm nach Anspruch 7, dadurch gekennzeichnet, daß die Leistung des oder der Ventilatoren (11) so bemessen ist, daß selbst bei höchster Drehzahl und damit maximaler Luftbelastung an der benetzten Oberfläche des Verflüssigers (4) kein Tropfenaustrag erfolgt.
- Trockerkühlturm nach Anspruch 8, dadurch gekennzeichnet, daß bei maximaler Ventilatordrehzahl der Wärmeaustauscher über die ganze Tiefe und bei reduzierter Ventilatordrelzahl nur der kältere Teil beim Rücklauf benetzbar ist.
- Trockenkülturm nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Kühlkapazität der als Kühlluft angesaugten Umgebungsluft thermisch durch Lufttermperatursteuerung und/oder mechanisch mittels dem Wärmetauscher (2) vor- oder nachgeschalteter Schikanen in Abhängigkeit von der Temperatur des Heißgases des Kältemittels einstellbar ist.
- Trockenkühlturm nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Erhitzer (3) und der Verflüssiger (4) zur Verbesserung der Benetzung des Verflüssigers (4) mit Wasser innerhalb des Kühlturms baulich von einander getrennte Einheiten bilden.
- Trockenkühlturm nach einem der Ansprüche 1 bis 1, dadurch gekennzeichnet, daß sowohl der Verflüssiger (4) als auch der Erhitzer (3) aus mehreren selbständigen, miteinander verbundenen Einheiten bestehen, die zueinander parallel oder in Reihe geschaltet sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29805111U | 1998-03-20 | ||
| DE29805111U DE29805111U1 (de) | 1998-03-20 | 1998-03-20 | Trockenkühlturm für die hybride Verflüssigung von Kältemitteln |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0943882A2 true EP0943882A2 (de) | 1999-09-22 |
| EP0943882A3 EP0943882A3 (de) | 2000-08-23 |
| EP0943882B1 EP0943882B1 (de) | 2003-09-24 |
Family
ID=8054527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99103889A Expired - Lifetime EP0943882B1 (de) | 1998-03-20 | 1999-03-01 | Trockenkühlturm für die hybride Verflüssigung von Kältemitteln |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0943882B1 (de) |
| AT (1) | ATE250744T1 (de) |
| DE (2) | DE29805111U1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2365955A (en) * | 1998-09-09 | 2002-02-27 | Liu Fu Chin | Evaporative condensing apparatus |
| ITPD20050132A1 (it) * | 2005-05-11 | 2006-11-12 | Costan Spa | Procedimento per raffreddare la co2 in un impianto frigorifero ed uno scambiatore di calore a batteria alettata per realizzare tale procedimento |
| CA2709639A1 (en) * | 2007-12-18 | 2009-06-25 | A-Heat Allied Heat Exchange Technology Ag | Heat exchange system |
| EP2177854A1 (de) | 2008-10-16 | 2010-04-21 | Ludwig Michelbach | Kühlvorrichtung |
| EP3002530B1 (de) * | 2014-10-03 | 2019-04-10 | Güntner GmbH & Co. KG | Wärmeaustauscher, Wärmeaustauschervorrichtung und Verfahren zur Benetzung eines Wärmeaustauschers |
| DE202016105392U1 (de) | 2016-09-28 | 2016-11-10 | Thermofin Gmbh | Hybridkühlanordnung |
| EP3306246B1 (de) | 2016-10-06 | 2020-09-30 | Jaeggi HybridTechnologie AG | Wärmeaustauschvorrichtung |
| DE202016107184U1 (de) | 2016-12-20 | 2018-03-21 | Güntner Gmbh & Co. Kg | Wärmetauschereinrichtung |
| DE202018103180U1 (de) | 2017-07-06 | 2018-06-15 | Jaeggi Hybridtechnologie Ag | Kühlanordnung für die hybride Rückkühlung oder Verflüssigung eines Kühl- oder Kältemittels |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0428647A1 (de) | 1989-05-30 | 1991-05-29 | Jaeggi Ag Bern | Kühlanlage des hybriden typs. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2166397A (en) * | 1937-02-12 | 1939-07-18 | Niagara Blower Co | Evaporative cooler |
| US3800861A (en) * | 1969-12-05 | 1974-04-02 | Gen Electric | Air cooled vapor condenser module |
| FR2135442A1 (en) * | 1971-05-05 | 1972-12-22 | Jacir Joseph | Air-cooled condenser with air outlet heater to prevent - emission of condensate cloud |
| DE3237860A1 (de) * | 1982-10-13 | 1984-04-19 | Hütötechnika Ipari Szövetkezet, 2891 Tata | Kombinierter dampfvorkuehler zu verdunstungskondensatoren |
-
1998
- 1998-03-20 DE DE29805111U patent/DE29805111U1/de not_active Expired - Lifetime
-
1999
- 1999-03-01 DE DE59907072T patent/DE59907072D1/de not_active Expired - Lifetime
- 1999-03-01 EP EP99103889A patent/EP0943882B1/de not_active Expired - Lifetime
- 1999-03-01 AT AT99103889T patent/ATE250744T1/de active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0428647A1 (de) | 1989-05-30 | 1991-05-29 | Jaeggi Ag Bern | Kühlanlage des hybriden typs. |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0943882B1 (de) | 2003-09-24 |
| DE59907072D1 (de) | 2003-10-30 |
| DE29805111U1 (de) | 1998-06-25 |
| EP0943882A3 (de) | 2000-08-23 |
| ATE250744T1 (de) | 2003-10-15 |
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