CN205843121U - A kind of low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set - Google Patents
A kind of low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set Download PDFInfo
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- CN205843121U CN205843121U CN201620544027.1U CN201620544027U CN205843121U CN 205843121 U CN205843121 U CN 205843121U CN 201620544027 U CN201620544027 U CN 201620544027U CN 205843121 U CN205843121 U CN 205843121U
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- 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
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- 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
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Abstract
This utility model relates to refrigeration plant, is specifically related to a kind of low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set.A kind of low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set is proposed, including high-temperature generator, condenser, low-pressure absorber, vaporizer, high pressure absorber and cryogenerator, increase and have middle temperature generator and middle temperature heat exchanger, middle temperature generator, condenser, high-temperature generator sets gradually in same cylinder from left to right, low-pressure absorber, middle temperature generator, the connecting line of cryogenerator and correspondence constitutes hypotonic solution closed circuit, high pressure absorber, the connecting line of high-temperature generator and correspondence constitutes high-pressure solution closed circuit, low-temperature water heating sequentially enters middle temperature generator through connecting line, cryogenerator and high-temperature generator.It is about 50 DEG C that this utility model can realize the hot water temperature after recycling, and Recovery of the hot water utilizes the temperature difference to be more than 40 DEG C, and the refrigerating efficiency of unit is more than 0.7 simultaneously.
Description
Technical field
This utility model relates to refrigeration plant, is specifically related to a kind of low-temperature water heating big temperature difference type lithium-bromide absorption-type refrigerating machine
Group.
Background technology
Hot water lithium bromide absorbing refrigeration machine is to utilize low-temperature water heating to drive, and produces the equipment of cold water, because it is recyclable
Utilize that low-temperature water heating waste heat, unit capacity are big, it is excellent to adopt water as cold-producing medium environmentally safe, unit maintenance convenient management etc.
Gesture, the application in the field such as air-conditioning, process refrigeration of this unit is more and more extensive.Hot water lithium bromide absorbing refrigeration unit at present
Hot water temperature after recycling is about 70 DEG C, and within general Recovery of the hot water utilizes the temperature difference to be 20 DEG C, unit refrigerating efficiency is
0.7～0.8.The most also temperature difference type lithium bromide absorption refrigerating set big to low-temperature water heating has carried out research and has improved, and China is real
The lithium bromide adsorption water chilling that a kind of Low Temperature Thermal water type twin-stage absorbs-occurs is proposed with new patent ZL201220390918.8
Unit, as it is shown in figure 1, it is about 50 DEG C that this unit can realize the hot water temperature after recycling, Recovery of the hot water utilizes the temperature difference to be
More than 40 DEG C, but the refrigerating efficiency of unit is about 0.4.And it practice, some low-temperature water heatings, particularly plant produced discharge
Low-temperature water heating wants to recovery waste heat to greatest extent, produces more cold simultaneously, on the one hand meets low-temperature water heating cooling need
Asking, on the other hand meet factory's refrigeration demand, current Main can not solve problem above.
Utility model content
The purpose of this utility model be to solve with present on not enough, it is provided that a kind of low-temperature water heating big temperature difference type lithium bromide
Absorption refrigeration unit, it is about 50 DEG C that this unit can realize the hot water temperature after recycling, and Recovery of the hot water utilizes the temperature difference to be
More than 40 DEG C, the refrigerating efficiency of unit is more than 0.7 simultaneously.
This utility model be the technical scheme is that a kind of low-temperature water heating big temperature difference type bromine of proposition for achieving the above object
Change lithium-absorbing formula refrigeration unit, send out including high-temperature generator, condenser, low-pressure absorber, vaporizer, high pressure absorber, low temperature
Raw device, low temperature heat exchanger, high-temperature heat exchanger and the connecting line of correspondence and solution pump, have additional middle temperature generator and middle temperature
Heat exchanger, middle temperature generator, condenser, high-temperature generator set gradually in same cylinder from left to right, low-pressure absorber,
The connecting line of middle temperature generator, cryogenerator and correspondence constitutes hypotonic solution closed circuit, and high pressure absorber, high temperature occur
The connecting line of device and correspondence constitutes high-pressure solution closed circuit, low-temperature water heating through connecting line sequentially enter middle temperature generator,
Cryogenerator and high-temperature generator, and respectively with the weak solution in hypotonic solution closed circuit, intermediate solution and high-pressure solution
Weak solution heat exchange in closed circuit.
Described low-pressure absorber and vaporizer constitute low pressure cylinder, and high pressure absorber constitutes high pressure cylinder with cryogenerator
Body, low pressure cylinder and high pressure barrel is arranged apart or integral arrangement.
Described low-pressure absorber and vaporizer use double absorption structure of section.
Adding middle temperature generator and middle temperature heat exchanger in refrigeration unit of the present utility model, low-temperature water heating sequentially enters
Middle temperature generator, cryogenerator, high-temperature generator respectively with hypotonic solution circulate in weak solution, intermediate solution, high pressure solution
The weak solution of liquid circulation carries out heat exchange, reclaims low-temperature water heating waste heat to greatest extent, improves refrigerating efficiency, further, this reality
Double section absorption techniques can be used with novel low-pressure absorber and vaporizer, reduce absorbing liquid concentration, improve unit efficiency.Use
This utility model can be that client reclaims more waste heat, provides more refrigerating capacity, the refrigeration unit that the utility model proposes simultaneously
Can realize the hot water temperature after recycling is about 50 DEG C, and Recovery of the hot water utilizes the temperature difference to be more than 40 DEG C, the refrigeration effect of unit
Rate is up to more than 0.7.
Accompanying drawing explanation
The low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set flow chart that Fig. 1 is conventional；
Fig. 2 is low-temperature water heating of the present utility model big temperature difference type lithium bromide absorption refrigerating set flow chart；
Fig. 3 is another kind of low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set flow chart of the present utility model；
In figure: 1-high-temperature generator, 2-condenser, 3-two-stage nitration low-pressure absorber, 4-flash evaporator, 5-refrigerant pump, 6-
Low-pressure absorber solution pump, 7-high pressure absorber solution pump, 8-high pressure absorber, 9-cryogenerator solution pump, 10-low temperature is sent out
Raw device, 11-low temperature heat exchanger, 12-high-temperature heat exchanger, 13-middle temperature generator, temperature heat exchanger in 14-, 15-mono-section steaming
Sending out device, mono-section of low-pressure absorber of 16-, 17-absorbs liquid pump.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in detail.
Embodiment 1:
This unit as shown in Figure 2 is mainly constituted by with lower component: high-temperature generator 1, condenser 2, two-stage nitration low pressure absorb
Device 3, flash evaporator 4, refrigerant pump 5, low-pressure absorber solution pump 6, high pressure absorber solution pump 7, high pressure absorber 8, low temperature
Generator solution pump 9, cryogenerator 10, low temperature heat exchanger 11, high-temperature heat exchanger 12, extract system, control system with
And connecting line, valve etc. are constituted.Two-stage nitration low-pressure absorber 3 and flash evaporator 4 constitute low pressure cylinder, high pressure absorber 8 with
Cryogenerator 10 constitute high pressure barrel, low pressure cylinder and high pressure barrel can arranged apart or integral arrangement, i.e. the two is permissible
It is respectively arranged in two independent cylinders or is arranged in same cylinder.
Refrigeration unit of the present utility model has additional middle temperature generator 13 and middle temperature heat exchanger 14, middle temperature generator 13
Being arranged in a cylinder with condenser 2 and high-temperature generator 1, middle temperature generator 13, condenser 2, high-temperature generator 1 are at cylinder
Set gradually the most from left to right, two-stage nitration low-pressure absorber 3, middle temperature generator 13, cryogenerator 10 and the connecting line of correspondence
Constituting hypotonic solution closed circuit, the connecting line of high pressure absorber 8, high-temperature generator 1 and correspondence constitutes high-pressure solution circulation
Loop, low-temperature water heating sequentially enters middle temperature generator 13, cryogenerator 10 and high-temperature generator 1, and difference through connecting line
With the weak solution heat exchange in the weak solution in hypotonic solution closed circuit, intermediate solution and high-pressure solution closed circuit.This practicality
Novel middle low-temperature water heating passes sequentially through middle temperature generator, cryogenerator, high-temperature generator realize three grades of recuperations of heat, reaches to reclaim
More waste heats improve the purpose of refrigerating efficiency simultaneously.
This unit cyclic process is divided into two solution circulations: two-stage nitration low-pressure absorber 12, middle temperature generator 13, low temperature occur
Device 10 constitutes hypotonic solution circulation, and high pressure absorber 8, high-temperature generator 1 constitute high-pressure solution circulation.High-pressure solution cyclic process
As follows: high pressure absorber 8 weak solution out enters high temperature through high pressure absorber solution pump 7 by high-temperature heat exchanger 12 and occurs
Device 1；In high-temperature generator 1, lithium bromide weak solution becomes concentrated solution through extraneous low-temperature water heating heating, and concentrated solution exchanges through high-temperature hot
Device 12 enters high pressure absorber 8；In high pressure absorber 8, concentrated solution absorbs the cold of cryogenerator 10 under the cooling of cooling water
Matchmaker's steam becomes weak solution.Hypotonic solution cyclic process is as follows: two-stage nitration low-pressure absorber 3 weak solution out is through low-pressure absorber
Solution pump 6 sequentially passes through low temperature heat exchanger 11, middle temperature heat exchanger 14 enters middle temperature generator 13；In middle temperature generator 13
Lithium-bromide solution is become intermediate solution by extraneous low-temperature water heating heating, and then in warp, temperature heat exchanger 14 enters cryogenerator
10；In cryogenerator 10, intermediate solution is become concentrated solution by extraneous low-temperature water heating heating, and concentrated solution is through low temperature heat exchanger
11 enter two-stage nitration low-pressure absorber 3；In two-stage nitration low-pressure absorber 3, concentrated solution absorbs dual circulation under the cooling of cooling water
Weak solution is become after device 4 coolant steam.The cyclic process of coolant is as follows: from middle temperature generator 13, the coolant of high-temperature generator 1
Steam enters condenser 2, and in condenser 2, the coolant steam outside pipe is become chilled water by the cooling water cooling in pipe；Condenser 2
Middle chilled water enters flash evaporator 4 through throttling dropping equipment；In flash evaporator 4, chilled water gets to two-stage nitration steaming by refrigerant pump
Sending out device 4 top to carry out dripping pouring, chilled water evaporates at heat-transfer pipe outer surface, and in absorption tube, the heat of water makes water temperature reduce simultaneously, real
Now freeze purpose.Low-temperature water heating sequentially enter middle temperature generator 13, cryogenerator 10, high-temperature generator 1 respectively with low pressure solution
Weak solution in liquid circulation, intermediate solution, the weak solution of high-pressure solution circulation carry out heat exchange and realize recuperation of heat and improve refrigeration effect
Rate.
Embodiment 2:
The refrigeration unit flow chart of the present embodiment as it is shown on figure 3, as different from Example 1, low-pressure absorber, vaporizer
Using double section absorption techniques, increase solution pump 17, the concentrated solution from cryogenerator 10 is introduced into one section of absorber 16, then
Two-stage nitration absorber 3 is entered by solution pump 17；Cold water is introduced into flash evaporator 4 and enters back into one section of vaporizer 15；Use this technology
Solution concentration can be reduced, reduce solution circulating load, improve unit efficiency further.
The utility model proposes a kind of new circulation process, use this flow process can reclaim low-temperature water heating waste heat to a greater extent,
Improve unit refrigerating efficiency 75% simultaneously, the cooling of factory technics low-temperature water heating and refrigeration demand can be met, it is achieved energy-saving and emission-reduction, carry
High-energy source utilization rate.
Claims (3)
1. a low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set, absorbs including high-temperature generator, condenser, low pressure
The connecting line of device, vaporizer, high pressure absorber, cryogenerator, low temperature heat exchanger, high-temperature heat exchanger and correspondence and molten
Liquid pump, it is characterised in that: having additional middle temperature generator and middle temperature heat exchanger, middle temperature generator, condenser, high-temperature generator exist
Set gradually from left to right in same cylinder, low-pressure absorber, middle temperature generator, cryogenerator and the connecting line structure of correspondence
Becoming hypotonic solution closed circuit, the connecting line of high pressure absorber, high-temperature generator and correspondence constitutes high-pressure solution closed circuit,
Low-temperature water heating sequentially enters middle temperature generator, cryogenerator and high-temperature generator through connecting line, and respectively with hypotonic solution
The weak solution heat exchange in weak solution, intermediate solution and high-pressure solution closed circuit in closed circuit.
Low-temperature water heating the most according to claim 1 big temperature difference type lithium bromide absorption refrigerating set, it is characterised in that: described
Low-pressure absorber and vaporizer constitute low pressure cylinder, and high pressure absorber and cryogenerator constitute high pressure barrel, low pressure cylinder and
High pressure barrel is arranged apart or integral arrangement.
Low-temperature water heating the most according to claim 1 and 2 big temperature difference type lithium bromide absorption refrigerating set, it is characterised in that:
Described low-pressure absorber and vaporizer use double absorption structure of section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620544027.1U CN205843121U (en) | 2016-06-07 | 2016-06-07 | A kind of low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620544027.1U CN205843121U (en) | 2016-06-07 | 2016-06-07 | A kind of low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set |
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| CN205843121U true CN205843121U (en) | 2016-12-28 |
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| CN201620544027.1U Active CN205843121U (en) | 2016-06-07 | 2016-06-07 | A kind of low-temperature water heating big temperature difference type lithium bromide absorption refrigerating set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865075A (en) * | 2016-06-07 | 2016-08-17 | 松下制冷（大连）有限公司 | Low-temperature hot water large-temperature-difference lithium bromide absorbing type refrigerating unit |
| CN108534570A (en) * | 2018-05-28 | 2018-09-14 | 同方节能工程技术有限公司 | A kind of absorption big temperature difference heat-exchange unit |
-
2016
- 2016-06-07 CN CN201620544027.1U patent/CN205843121U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865075A (en) * | 2016-06-07 | 2016-08-17 | 松下制冷（大连）有限公司 | Low-temperature hot water large-temperature-difference lithium bromide absorbing type refrigerating unit |
| CN108534570A (en) * | 2018-05-28 | 2018-09-14 | 同方节能工程技术有限公司 | A kind of absorption big temperature difference heat-exchange unit |
| CN108534570B (en) * | 2018-05-28 | 2024-04-09 | 同方节能工程技术有限公司 | Absorption type large-temperature-difference heat exchanger unit |
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