WO2009089694A1 - Unité frigorifique à absorption avec refroidissement par évaporation à chute libre - Google Patents

Unité frigorifique à absorption avec refroidissement par évaporation à chute libre Download PDF

Info

Publication number
WO2009089694A1
WO2009089694A1 PCT/CN2008/070787 CN2008070787W WO2009089694A1 WO 2009089694 A1 WO2009089694 A1 WO 2009089694A1 CN 2008070787 W CN2008070787 W CN 2008070787W WO 2009089694 A1 WO2009089694 A1 WO 2009089694A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchange
absorber
solution
condenser
refrigeration unit
Prior art date
Application number
PCT/CN2008/070787
Other languages
English (en)
Chinese (zh)
Inventor
Yang Xu
Original Assignee
Yang Xu
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 Yang Xu filed Critical Yang Xu
Publication of WO2009089694A1 publication Critical patent/WO2009089694A1/fr

Links

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
    • 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
    • F25B37/00—Absorbers; Adsorbers
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/041—Details of condensers of evaporative condensers
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • 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]
    • Y02B30/62—Absorption based systems

Definitions

  • the invention relates to the field of absorption refrigeration and heating technology, in particular to an absorption refrigeration unit. Background technique
  • the absorption refrigeration unit is a refrigeration unit that uses heat energy to generate a cooling source for the drive source. Because its refrigerant is a natural refrigerant, it does not damage the atmospheric ozone layer, and it has good environmental protection. In addition, it can use clean energy such as waste heat, geothermal energy, solar energy, and other clean energy sources such as natural gas as the driving source. Great development.
  • a typical absorption refrigeration unit uses a lithium bromide aqueous solution or an aqueous ammonia solution as the working medium pair.
  • all absorption refrigeration units have a structure consisting of four components: generator, condenser, evaporator and absorber, and use the heat source and pressure difference to drive the working fluid to circulate in the four major components to achieve the cooling function.
  • the cold water is cooled in the evaporator by the low-temperature refrigerant water from the condenser under reduced pressure, and the refrigerant water itself absorbs the heat of the cold water and evaporates to become a refrigerant vapor.
  • the absorber it is absorbed by the concentrated solution, and the concentrated solution becomes a dilute solution.
  • the dilute solution in the absorber is pumped by the solution to the heat exchanger, the temperature rises after heat recovery, and finally enters the generator.
  • the dilute solution in the generator is generated by the generator heat source, such as hot water, steam, flue gas and direct combustion. The heat source is heated to become a concentrated solution.
  • the concentrated solution enters the absorber and drip onto the cooling water pipe to absorb the refrigerant vapor from the evaporator and become a dilute solution.
  • the cooling of the absorber by the cooling water lowers the temperature of the concentrated solution to ensure the continuation of the absorption process.
  • the refrigerant vapor generated by the heat source of the generator heats the dilute solution, enters the condenser and is cooled by the cooling water, is depressurized and throttled, becomes a low-temperature refrigerant, enters the evaporator, and drip in the cold water.
  • the coolant entering the evaporator is cooled. The above cycle is repeated as it is, and finally the temperature of the brine is lowered to achieve the purpose of cooling.
  • FIG. 5 shows a water-cooled lithium bromide absorption refrigeration unit currently on the market. As shown in the figure, the heat of the condenser 91 and the absorber 92 in the lithium bromide absorption refrigeration unit is taken away by the cooling water, and the cooling water temperature is shown. After the rise, it proceeds to the cooling tower 93.
  • the air flowing through the water surface is in direct contact with the water, and the heat transfer and steaming are contacted.
  • the heat is dissipated, so that the temperature of the cooling water is lowered to about 4 degrees higher than the temperature of the wet bulb, and then returned to the unit for repeated use.
  • the refrigeration unit also requires water treatment equipment. If water quality treatment is not carried out, the heat transfer tube clusters of the absorber and the condenser in the unit are prone to corrosion and scaling, which affects the service life and performance of the unit.
  • the secondary heat exchange is performed by the cooling water in the cooling tower through the absorber and the condenser, thereby increasing the heat exchange temperature difference between the cooling temperature and the wet bulb temperature.
  • This not only reduces the efficiency of the system, but also requires a larger heat exchange area due to the increased cooling temperature, resulting in a larger footprint and more material consumption of the cooling tower.
  • the cooling tower structure needs to continuously spray the water in actual use, and the required water circulation amount is several tens to several times of the actual water evaporation amount, thereby causing a great waste of power consumption of the cooling water pump.
  • the long-term circulating spray of cooling tower water is easy to breed Legionella, which endangers human health.
  • the technical problem to be solved by the present invention is to overcome the above-mentioned drawbacks of the prior art, and to provide a falling film evaporative cooling absorption refrigeration unit capable of realizing an absorber and a condenser without using a cooling tower. Heat exchange, and the heat transfer temperature difference is small, and the refrigeration efficiency is high.
  • a falling film evaporative cooling absorption refrigeration unit comprising a generator, an evaporator, an absorber, a condenser and a throttling device; the condenser and the absorber each comprise a plurality of heat exchange tubes or a plurality of heat exchange plates, wherein the refrigeration unit further comprises a plurality of cooling water falling film discharge devices; the plurality of heat exchange tubes of the condenser and the absorber or the outer wall or the inner wall of the plurality of heat exchange plates are in contact with the air, at least a cooling water falling film discharge device is disposed above or above the heat exchange tube or the heat exchange plate of the condenser and the absorber for arranging the cooling water on the wall of the heat exchange tube or the heat exchange plate in contact with the air a liquid film which flows down the wall surface by gravity, and evaporates and cools the liquid film by convection of air.
  • a solution heat exchanger is further included, wherein the concentrated solution side inlet of the solution heat exchanger is in communication with the generator, and the concentrated solution side outlet is connected to the absorber;
  • the dilute solution side inlet of the device is in communication with the absorber, and the dilute solution side outlet is in communication with the generator.
  • a solution liquid discharging device is further included, and the solution
  • the liquid cloth liquid device is disposed above or above the plurality of heat exchange tubes or the plurality of heat exchange plates of the absorber; the inlet of the solution liquid discharging device is in communication with the solution heat exchanger, and the outlet is connected to the absorber for the solution It is disposed on the wall of the heat exchange tube or heat exchange plate of the absorber that is not in contact with the air.
  • the absorber comprises a solution tank, and the solution tank is disposed at a plurality of heat exchange tubes of the absorber or a plurality of heat exchange plates at the bottom, and a plurality of heat exchange tubes of the absorber or A plurality of heat exchange plates are connected;
  • the condenser comprises a refrigerant tank, and the refrigerant tank is disposed at a plurality of heat exchange tubes of the condenser or a plurality of heat exchange plates at the bottom, and is heat exchanged with the plurality of heat exchange tubes or plurality of tubes of the condenser The plates are connected; the coolant tank and the solution tank are closed boxes.
  • the main axis of the plurality of heat exchange tubes of the absorber and the condenser or the main heat exchange surface of the plurality of heat exchange plates and the horizontal plane are at an angle of 45 or more and Less than or equal to 90°.
  • the invention also provides a falling film evaporative cooling absorption refrigeration unit, comprising a generator, an evaporator, an absorber, a condenser, a solution heat exchanger, a condensate tank, a throttling device, an evaporation water tank and a solution tank; And an inlet of the condenser and an inlet of the solution heat exchanger, wherein an outlet of the condenser is in communication with the condensate tank, and a condensate tank is connected to the evaporation tank through the throttling device,
  • the evaporating water tank is in communication with the evaporator; the outlet of the solution heat exchanger and the evaporator are respectively connected to an inlet of the absorber, and an outlet of the absorber is in communication with the solution tank;
  • Each of the absorbers comprises a plurality of heat exchange tubes or a plurality of heat exchange plates, and is characterized in that it further comprises a cooling water liquid dischar
  • the invention arranges a liquid film for evaporating condensation on the wall surface of the condenser and the heat exchange tube or the heat exchange plate of the absorber which is in contact with the air through the cooling water falling film cloth discharging device, and then uses the natural convection or forced convection to make the heat exchange surface
  • the liquid film evaporates. Since the heat transfer of latent heat of evaporation is nearly a hundred times that of sensible heat exchange, the power consumption of the cooling water pump can be saved, and the heat transfer coefficient of the condenser and the cooling side of the absorber is higher, thereby obtaining more than the existing absorption refrigeration unit. Low cooling temperature, and improve the heat exchange efficiency of the condenser and absorber, and expand the ambient temperature range in which the absorption refrigeration unit operates. In addition, the invention saves the cooling tower, eliminates the production of Legionella and damages human health, reduces the footprint of the unit, and reduces the cost. BRIEF abstract
  • FIG. 1 is a schematic structural view of a first embodiment of the present invention.
  • Fig. 2 is a partially enlarged schematic view showing the structure of a cooling water falling film cloth and a solution falling film liquid structure according to a first embodiment of the present invention.
  • FIG 3 is a schematic structural view of a second embodiment of the present invention.
  • Fig. 4 is a partially enlarged schematic view showing the structure of a cooling water falling film cloth and a liquid film falling solution of a second embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a conventional lithium bromide absorption refrigeration unit. BEST MODE FOR CARRYING OUT THE INVENTION
  • a falling film evaporative cooling absorption refrigeration unit includes a generator 1, an evaporator 3, and an absorber 4 (including a heat exchanger and is located at the bottom of the heat exchanger and is replaced with a solution tank 42 connected to the heat exchanger, a condenser 5 (including a heat exchanger and a refrigerant tank 52 located at the bottom of the heat exchanger and communicating with the heat exchanger), a cooling water falling film discharge device 81, and a throttle device .
  • the generator 1 is respectively connected to the inlet of the condenser 5 and the inlet of the absorber 4, and the heat exchanger of the condenser 5 is composed of a plurality of heat exchange tubes or a plurality of heat exchange plates 51, and a refrigerant tank of the condenser 5 52 is connected to the evaporator 3.
  • the throttling device is a baffle 61 disposed in the coolant tank 52 of the condenser 5, and the baffle 61 is provided with a plurality of orifices.
  • the refrigerant tank is divided into a condensate tank 525 and an evaporating water tank 526 through a partition 61, and the condensate tank 525 is disposed on the evaporating water tank 526.
  • the present invention is further provided with a capillary tube 62 having one end communicating with the bottom of the evaporator 3 and the other end communicating with the coolant tank 52.
  • the capillary 62 returns excess refrigerant in the evaporator 3 to the refrigerant tank 52.
  • the evaporator 3 is in communication with the inlet of the heat exchanger of the absorber 4, the outlet of which is in communication with a solution tank 42 located at the bottom of the heat exchanger.
  • the heat exchanger of the absorber 4 is composed of a plurality of heat exchange tubes or a plurality of heat exchange plates 41.
  • the main axis of the plurality of heat exchange tubes of the absorber and the condenser or the main heat exchange surface of the plurality of heat exchange plates and the horizontal plane are at an angle of 45 ° or more and 90 ° or less.
  • FIG. 1 Shown in the middle is the main axis of the plurality of heat exchange tubes of the absorber and the condenser or the main heat exchange surface of the plurality of heat exchange plates being perpendicular to the horizontal plane.
  • the outlet of the solution tank 42 of the absorber 4 is in communication with the generator 1, and the outlet of the refrigerant tank 52 of the condenser 5 is in communication with the evaporator 3.
  • the outer walls of the plurality of heat exchange tubes or the plurality of heat exchange plates of the absorber 4 and the condenser 5 are all exposed to the air, and the inner wall is not in contact with the air, and the cooling water falling film cloth
  • the liquid device 81 is disposed above or above the plurality of heat exchange tubes or the plurality of heat exchange plates of the absorber 4 and the condenser 5, and a plurality of heat exchange tubes or a plurality of heat exchange plates along the absorber 4 and the condenser 5
  • the outer wall arranges the cooling water in the form of the liquid film 100 in the heat exchange tube of the absorber 4 and the condenser 5 or the outer wall surface of the heat exchange plate which is exposed to the air, and the liquid film flows down along the outer wall surface by gravity and performs Evaporative cooling.
  • the present invention also includes a fan 80 for cooling the heat exchange tubes or heat exchange plates of the condenser and the absorber, the liquid film evaporating more rapidly under the fan 80, achieving efficient operation of the absorber and the condenser cool down.
  • the present invention also includes a solution dispensing device 82 disposed at the inlet of the absorber 4.
  • the inlet of the solution discharge device 82 is in communication with the outlet of the generator 1, and the outlet is in communication with the absorber 4.
  • the concentrated solution flowing out of the generator 1 passes through the solution discharge device 82, and flows under the action of gravity along the heat exchange tube of the absorber or the inner wall wall of the heat exchange plate 41 which is not in contact with the air, forming a concentrated solution film 300. .
  • the concentrated solution film 300 flows down by the wall surface which is not in contact with the air by gravity.
  • the refrigeration unit of the present invention passes the refrigerant vapor in the cavity of the evaporator 3 to the evaporation conduit 31 of the absorbent solution in the absorber 4 through a plurality of strips disposed between the evaporator 3 and the absorber 4.
  • the evaporator 3 and the absorber 4 are connected.
  • the evaporation conduit 31 passes through the solution discharge device 82, and the number of the evaporation conduits 31 corresponds to the number of heat exchange plates or heat exchange tubes 41 of the absorber.
  • the wavy line indicates the cooling aqueous solution
  • the black dot indicates the concentrated solution of the absorbent
  • the flocculent shadow in the evaporator indicates the refrigerant vapor.
  • FIG. 3 and 4 are schematic views showing the structure of a second embodiment of the present invention.
  • the absorber 4 and the condenser 5 are each provided with a cover 400 so that the outer walls of the heat exchanger tubes or the plurality of heat exchange plates of the absorber 4 and the condenser 5 are not Contact with air causes the inner wall passage of the heat exchange tube or heat exchange plate to communicate with the atmosphere.
  • a plurality of heat exchange tubes or a plurality of heat exchange tubes of the condenser and the absorber are housed in a closed cavity 500 through the outer cover 400, and the interior of the cavity 500 is isolated from the air to be inside the cavity 500. No air.
  • the refrigerant tank 52 and the solution tank 42 are both closed casings, and air ducts 521 and 421 respectively communicating with the atmosphere through the side walls are provided on the side walls of the refrigerant tank 52 and the solution tank 42, respectively, and the air ducts 521, 421 respectively with a plurality of heat exchange tubes or multiple heat exchangers of the condenser and the absorber
  • the changing plates are connected; at the same time, air pipes 523, 423, air pipes 523, 423, which are communicated with the atmosphere through the outer cover 400, are also disposed above the plurality of heat exchange tubes or the plurality of heat exchange plates of the condenser and the absorber, respectively.
  • the plurality of heat exchange tubes or the plurality of heat exchange plates of the condenser and the absorber are respectively connected to each other, thereby realizing the case where the inner wall passage of the heat exchange tube or the heat exchange plate having only the absorber and the condenser is open to the atmosphere.
  • a solution heat exchanger 2 is added between the generator 1 and the absorber 4.
  • the concentrated solution side inlet of the solution heat exchanger 2 is in communication with the outlet of the generator 1, and the concentrated solution side outlet of the solution heat exchanger 2 is in communication with the inlet of the absorber 4.
  • the dilute solution side inlet of the solution heat exchanger 2 is in communication with the solution tank 42 of the absorber, and the dilute solution side outlet is in communication with the inlet of the generator 1.
  • the solution heat exchanger 2 can recover the residual heat of the concentrated solution after the generator has been generated to improve system efficiency.
  • a refrigerant pump 71 may be added, the inlet of the refrigerant pump 71 is in communication with the refrigerant tank 52 of the condenser 5, and the outlet is in communication with the inlet of the evaporator 3.
  • the refrigerant pump can act as an auxiliary coolant spray.
  • the present invention may also add a solution pump 72, the inlet of which is in communication with the solution tank 42 of the absorber 4, and the outlet is in communication with the dilute solution side inlet of the solution heat exchanger 2.
  • the solution pump can increase the circulation of the solution.
  • a cooling water pump 73 may be further provided, and the outlet of the cooling water pump 73 communicates with the cooling water falling film discharge device 81.
  • an auxiliary fan 80 may be provided to increase the cooling film falling film evaporation effect, and the auxiliary fan 80 is disposed above the plurality of heat exchange tubes or the plurality of heat exchange plates of the condenser and the absorber.
  • the cooling water falling film discharge device 81 is located above or above the absorber 4 and the condenser 5, and arranges liquid on the inner wall of the absorber 4 and the plurality of heat exchange tubes of the condenser 5 or the plurality of heat exchange plates in contact with the air. membrane.
  • the liquid film is formed to flow down the wall surface of the inner wall by gravity and evaporatively cooled.
  • the concentrated solution passes through the solution liquid discharging device 82 located above or above the absorber 4, and a liquid film is formed on the outer wall surfaces of the plurality of heat exchange tubes or the plurality of heat exchange plates of the absorber 4 which are not in contact with the air.
  • the liquid film flows under the action of gravity along the heat exchange tube of the absorber or the outer wall of the heat exchange plate 41 which is not in contact with the air, forms a concentrated solution film, and reduces the film vapor absorption of the refrigerant vapor.
  • the refrigeration cycle of the present invention produces a concentrated solution for the generator.
  • the concentrated solution is cooled by the solution heat exchanger and then passed through the solution discharge device into the absorber and absorbed in the absorber with the vapor of the evaporator.
  • the absorption of the vapor causes the refrigerant in the evaporator to evaporate, thereby cooling the brine and achieving a cooling function.
  • the condensing refrigerant obtained by the generator during the formation of the concentrated solution is sprayed back to the evaporator together with the vapor condensed in the evaporator after the throttling, so that the evaporation process continues.
  • the dilute solution formed by the absorber after absorption is raised back to the generator to continue the process.
  • the invention arranges the heat exchange tube or the heat of the condenser and the absorber through the cooling water falling film liquid discharging device
  • the liquid film of the heat exchange surface is evaporated, and the heat transfer due to evaporation is nearly 100 times that of the sensible heat exchange mode, so that the present invention can realize heat exchange between the absorber and the condenser without using a cooling water tower, saving parts and reducing costs. And reduce the footprint.
  • the temperature difference between the inlet and outlet of the absorption refrigeration unit is 6 °C.
  • lKg of cooling water can carry away 25KJ of heat, while lKg water vaporizes latent heat at 2418KJ at 35 °C. Therefore, the theoretical water consumption required for the falling film evaporative cooling absorption refrigeration unit of the present invention is only about 1% of that of the existing water-cooled refrigeration unit using the cooling water tower, and the power consumption of the cooling water pump is significantly reduced.
  • the condensation temperature of the condenser of the present invention and the absorption liquid outlet temperature of the absorber may be closer to the wet bulb temperature of the air, which is about 3 to 5 ° C lower than that of the existing water-cooled refrigeration unit, and is lower than that of the air-cooled refrigeration unit. 8 ⁇ 1 C, the energy saving effect of the unit is remarkable, and the heat exchange temperature difference and the higher cooling efficiency are smaller than those of the existing absorption type refrigeration unit.
  • the simultaneous cooling of the condenser and absorber allows the conventional cooling tower to be completely replaced. At the same time, through the arrangement of falling film evaporation, the invention avoids the long-term recycling of the cooling water, and eliminates the breeding of Legionella and the harm to human health.
  • the outer walls of the plurality of heat exchange tubes or the plurality of heat exchange plates of the condenser and the absorber are simultaneously in contact with the air and the plurality of heat exchange tubes of the condenser and the absorber or
  • the inner wall of the plurality of heat exchange plates is simultaneously in contact with the air, however, it is easily recognized by those skilled in the art that the plurality of heat exchange tubes or the plurality of heat exchange plates of one of the condenser and the absorber have only the outer wall in contact with the air.
  • the present invention can also be realized.
  • the present invention may also provide a plurality of cooling water falling film discharge devices, in addition to the cooling water falling film disposed above or above the heat exchange tubes or heat exchange plates of the condenser and the absorber shown in the above embodiments.
  • the liquid discharging device may further include a cooling water falling film liquid discharging device disposed at two sides of the heat exchange tube or the heat exchange plate of the condenser and the absorber.
  • Industrial applicability The invention arranges a liquid film for evaporating condensation on the wall surface of the condenser and the heat exchange tube or the heat exchange plate of the absorber which is in contact with the air through the cooling water falling film cloth discharging device, and then uses the natural convection or forced convection to make the heat exchange surface The liquid film evaporates.
  • the power consumption of the cooling water pump can be saved, and the heat transfer coefficient of the condenser and the cooling side of the absorber is higher, thereby obtaining more than the existing absorption refrigeration unit.
  • Low cooling temperature and improve the heat exchange efficiency of the condenser and absorber, and expand the ambient temperature range in which the absorption refrigeration unit operates.
  • the invention saves the cooling tower, eliminates the production of Legionella and damages human health, reduces the footprint of the unit, and reduces the cost.

Abstract

Unité frigorifique à absorption avec refroidissement par évaporation à chute libre comprenant un générateur (1), un évaporateur (3), un absorbeur (4), un condenseur (5), un dispositif d'étranglement et plusieurs dispositifs (81) d'arrosage à chute libre d'eau de refroidissement. Les parois extérieures ou les parois intérieures d'une pluralité de tubes ou de plaques (51) d'échange de chaleur du condenseur (5) et de l'absorbeur (4) se trouvent au contact de l'air. Au moins un dispositif (81) d'arrosage à chute libre d'eau de refroidissement est disposé sur la partie supérieure ou au-dessus des tubes ou plaques (51) d'échange de chaleur du condenseur (5) et de l'absorbeur (4), de telle sorte que l'eau de refroidissement arrose la paroi au contact de l'air des tubes ou plaques (51) d'échange de chaleur pour former un film liquide (100). Ledit film liquide (100) s'écoule le long de la paroi par gravité et réalise un refroidissement par évaporation par convection de l'air.
PCT/CN2008/070787 2008-01-18 2008-04-24 Unité frigorifique à absorption avec refroidissement par évaporation à chute libre WO2009089694A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200820054844.4 2008-01-18
CNU2008200548444U CN201152648Y (zh) 2008-01-18 2008-01-18 降膜蒸发冷却吸收式制冷机组

Publications (1)

Publication Number Publication Date
WO2009089694A1 true WO2009089694A1 (fr) 2009-07-23

Family

ID=40128327

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/070787 WO2009089694A1 (fr) 2008-01-18 2008-04-24 Unité frigorifique à absorption avec refroidissement par évaporation à chute libre

Country Status (2)

Country Link
CN (1) CN201152648Y (fr)
WO (1) WO2009089694A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013010549A3 (fr) * 2011-07-18 2013-03-14 Purix ApS Procédé pour rafraîchir un bâtiment
CN107101420A (zh) * 2016-02-19 2017-08-29 约克（无锡）空调冷冻设备有限公司 一种适用于低压制冷剂的换热装置
CN109974500A (zh) * 2019-03-14 2019-07-05 河北科技大学 一种用于烟气回收装置的水路系统
EP3009768B1 (fr) * 2013-06-14 2021-03-03 Universitat Politècnica De Catalunya Machine à absorption réfrigérée par l'air

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105157279B (zh) * 2015-07-28 2017-10-20 西安交通大学 一种可调节的内冷型降膜吸收实验装置
CN106802015B (zh) * 2015-11-26 2023-08-01 四川捷元科技有限公司 吸收式制冷单元节流装置
CN106802034A (zh) * 2015-11-26 2017-06-06 四川捷元科技有限公司 吸收式制冷单元溶液箱
CN106091489B (zh) * 2016-08-01 2020-03-27 北京联力源科技有限公司 立式双降膜换热器及吸收式热泵
CN108895726B (zh) * 2018-07-26 2023-10-10 四川辉腾智汇机电工程有限公司 一种高效双侧相变换热器
CN109269156B (zh) * 2018-11-08 2024-04-05 珠海格力电器股份有限公司 一种蒸发冷凝集成装置及制冷系统
CN110006189A (zh) * 2019-04-30 2019-07-12 大连海洋大学 无溶液泵小型吸收式制冷机
CN112283981B (zh) * 2020-10-09 2021-11-16 安徽普泛能源技术有限公司 一种蒸发式吸收器及其吸收式制冷系统
CN112539570B (zh) * 2020-11-20 2022-05-24 东南大学 提升氨水降膜式吸收性能的氨水吸收制冷机用吸收器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962887A (en) * 1974-03-11 1976-06-15 A/S Atlas Industrial refrigeration plants of the absorption type
JPH04244563A (ja) * 1991-01-28 1992-09-01 Ebara Corp 吸収冷凍機
CN1261149A (zh) * 1999-01-15 2000-07-26 东南大学 板壳式溴化锂制冷机
CN1865813A (zh) * 2006-05-10 2006-11-22 江苏双良空调设备股份有限公司 立式双侧降膜吸收器制取蒸汽的第二类溴化锂吸收式热泵

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962887A (en) * 1974-03-11 1976-06-15 A/S Atlas Industrial refrigeration plants of the absorption type
JPH04244563A (ja) * 1991-01-28 1992-09-01 Ebara Corp 吸収冷凍機
CN1261149A (zh) * 1999-01-15 2000-07-26 东南大学 板壳式溴化锂制冷机
CN1865813A (zh) * 2006-05-10 2006-11-22 江苏双良空调设备股份有限公司 立式双侧降膜吸收器制取蒸汽的第二类溴化锂吸收式热泵

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013010549A3 (fr) * 2011-07-18 2013-03-14 Purix ApS Procédé pour rafraîchir un bâtiment
EP3009768B1 (fr) * 2013-06-14 2021-03-03 Universitat Politècnica De Catalunya Machine à absorption réfrigérée par l'air
CN107101420A (zh) * 2016-02-19 2017-08-29 约克（无锡）空调冷冻设备有限公司 一种适用于低压制冷剂的换热装置
CN107101420B (zh) * 2016-02-19 2023-04-07 约克（无锡）空调冷冻设备有限公司 一种适用于低压制冷剂的换热装置
CN109974500A (zh) * 2019-03-14 2019-07-05 河北科技大学 一种用于烟气回收装置的水路系统
CN109974500B (zh) * 2019-03-14 2023-06-20 河北科技大学 一种用于烟气回收装置的水路系统

Also Published As

Publication number Publication date
CN201152648Y (zh) 2008-11-19

Similar Documents

Publication Publication Date Title
WO2009089694A1 (fr) Unité frigorifique à absorption avec refroidissement par évaporation à chute libre
CN104848583A (zh) 空气压缩机用溴化锂吸收式蒸发冷却除湿空调系统
CN105135739A (zh) 多功能热泵型蒸发式冷凝空调机组
WO2004081465A1 (fr) Corps de climatiseur par absorption
CN201535592U (zh) 一种采用降膜式发生器的溴化锂吸收式冷水机组
KR101208459B1 (ko) 냉방 및 난방용수를 생산하는 ｏｒｃ 터보발전 시스템
CN206160547U (zh) 一种利用cpu余热的高热密度机房综合散热系统
CN204063674U (zh) 溴化锂吸收式制冷机组
CN214065269U (zh) 一种带自然冷却的制冷制热双效换热器
CN206207834U (zh) 膜法溶液直冷式制冷设备
CN201497255U (zh) 一种太阳能回热式硫氰酸钠—氨吸收式冰箱空调及热泵装置
CN208108535U (zh) 一种带蒸发冷却换热装置的溴化锂吸收式冷水机组系统
CN210814603U (zh) 热湿烟气节能脱白系统
CN206771609U (zh) 溴化锂吸收式风冷冷风太阳能空调机组
CN102607124B (zh) 一种用于制冷空调系统的防冻溶液再生热回收装置
KR101127521B1 (ko) 2단 재생 저온수 흡수식 냉동기
CN100567853C (zh) 一种回热式硫氰酸钠-氨吸收式热泵系统
CN206207620U (zh) 膜法溶液风式制冷设备
CN205561630U (zh) 一种浸泡式气液综合冷却型换热装置
CN211120100U (zh) 一种集成冷却的溴化锂制冷机
JP2014129944A (ja) 冷凍装置
CN219607432U (zh) 一种减少循环水蒸发量的蒸发式冷凝器
CN220038805U (zh) 一种利用再循环烟道余热的制冷制热系统
JP2004108731A (ja) ハイブリッド空調機
CN107781977A (zh) 一种多晶硅生产过程中富余蒸汽利用方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08734145

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08734145

Country of ref document: EP

Kind code of ref document: A1