CN106482382B - Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating - Google Patents
Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating Download PDFInfo
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- CN106482382B CN106482382B CN201610999713.2A CN201610999713A CN106482382B CN 106482382 B CN106482382 B CN 106482382B CN 201610999713 A CN201610999713 A CN 201610999713A CN 106482382 B CN106482382 B CN 106482382B
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- refrigerant
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- 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
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- 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
- F25B27/00—Machines, plants or systems, using particular sources of energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The present invention relates to a kind of the direct combustion type first class lithium bromide absorptive heat pump unit with direct heating, category technical field of refrigeration equipment.Including direct combustion generator (1), condenser (2), evaporator (4), absorber (5), solution heat exchanger (3), solution pump (8) and cryogenic fluid pump (10), it is characterized by: adding a weak solution bypass pipe (15) between solution pump discharge pipe (7) and water as refrigerant liquid capsule (9), and a weak solution by-passing valve (16) is set on it；Condenser water as refrigerant switching ball valve (19) is added in U-tube (14) of the condenser water as refrigerant into evaporator, a condenser water as refrigerant bypass pipe (17) is added between the U-tube (14) and absorber (5) cylinder body bottom in the condenser water as refrigerant before the condenser water as refrigerant switches ball valve into evaporator simultaneously, and a condenser water as refrigerant by-passing valve (18) is set on it.It is cut off the water supply under abnormal condition with remaining hot water under normal circumstances in external condition, by unit valve transfer itself, can all produce out required middle temperature-heat-source.
Description
Technical field
The present invention relates to a kind of first class lithium bromide absorptive heat pump units.Belong to technical field of refrigeration equipment.
Background technique
China exists largely in industries such as oil field, chemical industry, metallurgy, coking such as the separation water that recovers the oil, technique waste water, low at present
The low-grade heat sources such as warm spent hot water, while we need temperature-heat-source in a large amount of in production technology and life again, existing low
Grade waste heat need again in temperature-heat-source occasion, using first class lithium bromide absorptive heat pump unit extract low temperature exhaust heat water heat
Amount, produces out 40 DEG C higher than low-temperature heat source or more of middle temperature-heat-source, can save a large amount of 40% or more fuel, realize the energy
Comprehensive utilization, achieves preferable economic benefit.The direct combustion type first class lithium bromide absorptive heat pump unit (such as Fig. 1) of standard by
Direct combustion generator 1, condenser 2, evaporator 4, absorber 5, solution heat exchanger 3, solution pump 8, cryogenic fluid pump 10, pumped vacuum systems
It is constituted with the pipeline of control system (not shown) and connecting components, valve etc..Heating process is that low temperature exhaust heat water enters
In 4 heat-transfer pipe of evaporator, the water as refrigerant in water as refrigerant liquid capsule 9 is extracted out and sprays the heat-transfer pipe in evaporator 4 by cryogenic fluid pump 10
Surface absorbs the heat for flowing through remaining hot water in heat-transfer pipe, is vaporized into refrigerant vapour, and remaining hot water temperature after releasing heat reduces stream
Unit out；The refrigerant vapour inflow absorber 5 generated after remaining hot water heat is absorbed, the lithium bromide being absorbed at the top of device under leaching is dense molten
Liquid absorbs.Lithium bromide concentrated solution releases the heat of condensation of refrigerant vapour when absorbing refrigerant vapour, and heating flows through absorber heat-transfer pipe
Interior hot water flows out absorber after increasing its temperature；Lithium bromide concentrated solution concentration after absorbing refrigerant vapour is lower and lower, converges
Collection is extracted out in absorber bottom by solution pump 8, and direct combustion generator 1, the quilt in direct combustion generator are entered after heat exchanger heats up
Heating concentration, isolates refrigerant vapour.Concentrated solution with lithium bromide weak solution after carrying out heat and exchanging between heat transfering tube of heat exchanger
Absorber 4 is flowed back to, continues to absorb the refrigerant vapour generated in evaporator；And the high temperature refrigerant vapour stream generated in direct combustion generator
Enter in condenser 2, heating flows through the hot water in 2 heat-transfer pipe of condenser, and so that its temperature is continued outflow unit after increasing makes for user
With, while it being condensed into water as refrigerant after refrigerant vapour releasing heat, into evaporator.Because pressure is lower in evaporator, into evaporation
Water as refrigerant a part of device flashes into refrigerant vapour, and another part water as refrigerant then drops due to heat is taken away by that a part of shwoot
Temperature flows into base of evaporator liquid capsule at the water as refrigerant of saturation temperature.The above process constantly recycles progress, can constantly recycle remaining
The heat of hot water produces required middle temperature-heat-source.But during production technology maintenance or other reasons, remaining hot water occurs and cuts off the water supply feelings
Condition is added without waste heat heat, and heat pump unit can only just be shut down, and can not produce out required middle temperature-heat-source.How just can solve
It cuts off the water supply situation remaining hot water occurs, under conditions of being added without waste heat heat, direct combustion type first class lithium bromide absorptive heat pump machine
Group is not required to shut down and remains to produce out required middle temperature-heat-source for user, becomes one of the important topic studied at present.
Summary of the invention
The purpose of the present invention is to overcome the above shortcomings and to provide one kind to cut off the water supply situation in remaining hot water, without waste heat heat
Under conditions of amount is added, unit is not required to shut down the direct combustion type with direct heating for remaining to produce out required middle temperature-heat-source for user
First class lithium bromide absorptive heat pump unit.
What the object of the invention was realized in: a kind of direct combustion type first class lithium bromide absorptive heat pump machine with direct heating
Group, including direct combustion generator, condenser, evaporator, absorber, solution heat exchanger, solution pump and cryogenic fluid pump, feature exist
In: a weak solution bypass pipe is added between solution pump discharge pipe and water as refrigerant liquid capsule, and weak solution bypass is set on it
Valve；Condenser water as refrigerant switching ball valve is added in U-tube of the condenser water as refrigerant into evaporator, while cold in the condenser
Condenser water as refrigerant before agent water switching ball valve is cold into a condenser is added between the U-tube and absorber cylinder body bottom of evaporator
Agent water bypass pipe, and a condenser water as refrigerant by-passing valve is set on it.
Under normal circumstances, weak solution by-passing valve condenses heat pump unit external condition (referring to fuel, remaining hot water, hot water conditions)
Device water as refrigerant by-passing valve is in close state, condenser water as refrigerant switch ball valve it is in the open state, heat pump unit still press with
Past heat supply process flow operation.
It cuts off the water supply under abnormal condition when remaining hot water occurs for external condition, weak solution by-passing valve, condenser water as refrigerant by-passing valve
In the open state, condenser water as refrigerant switching ball valve is in close state, and heat pump unit presses direct heating process of the invention
Operation.At this point, direct combustion generator makes weak solution be condensed into concentrated solution and isolates cryogen steaming by fuel combustion heated solution
Vapour, hot water are still introduced into absorber and enter back into condenser, and hot water is absorbed within the condenser from direct combustion generator refrigerant vapour
Condensation heat and heat up, the water as refrigerant after condensation is directly entered absorber cylinder body bottom through condenser water as refrigerant bypass pipe, with
Concentrated solution in absorber under leaching is mixed into weak solution, and weak solution is pumped into direct combustion generator by solution and is concentrated, above-mentioned mistake
Journey constantly recycles progress, under conditions of no waste heat heat is added, is produced out with fuel combustion direct heating mode required
Middle temperature-heat-source.It since remaining hot water is cut off the water supply, is added without waste heat heat, it is dense for absorber just can not evaporate refrigerant vapour in evaporator
Solution absorbs, but has the hot water lower than concentrated solution temperature to flow through in absorber heat-transfer pipe, drenches dense molten outside absorber heat-transfer pipe
Liquid concentration is constant and temperature can reduce, and reduces absorption pressure, and evaporating pressure also just reduces, and heat-transfer pipe of evaporator memory is not put
The heat of empty remaining hot water will be sucked away and temperature reduces, will through weak solution bypass pipe to prevent heat-transfer pipe of evaporator frozen pipe
Part weak solution bypasses cryogen coolant-temperature gage in water as refrigerant liquid capsule and will be promoted, and is sent into the water as refrigerant for being mixed into solution by cryogenic fluid pump
Evaporator heat transfer pipe surface, heat-transfer pipe of evaporator surface temperature increase, this circulation is also constantly carrying out simultaneously, thus prevent
The potential factor of evaporator frozen pipe, ensure that in the case where remaining hot water cuts off the water supply abnormal condition, the direct combustion type first with direct heating
Lithium bromide absorption type heat pump unit being capable of safe and stable operation.
When external condition restores normal, that is, when in hot water stream of having a surplus pervaporation device heat-transfer pipe, the direct combustion with direct heating
Type first class lithium bromide absorptive heat pump unit need to only switch over valve among the above, so that it may press previous heat pump heat supply process
Operation continues the waste heat of recovery waste heat water, produces required middle temperature-heat-source.Heat pump heat supply process is transferred in direct heating process
Initial stage, so needing to open evaporator water as refrigerant by-passing valve, carries out water as refrigerant due to being mixed into weak solution in evaporator water as refrigerant
Regeneration treatment, until water as refrigerant is than re-qualified.
The beneficial effects of the present invention are:
The present invention is by previous direct combustion type first class lithium bromide absorptive heat pump crew base, in solution pump discharge pipe
A weak solution bypass pipe is added between water as refrigerant liquid capsule, and a weak solution by-passing valve is set on it；In condenser water as refrigerant
Condenser water as refrigerant switching ball valve is added on into the U-tube of evaporator, while before the condenser water as refrigerant switches ball valve
Condenser water as refrigerant into adding a condenser water as refrigerant bypass pipe between the U-tube and absorber cylinder body bottom of evaporator, and
One condenser water as refrigerant by-passing valve is set thereon.Two kinds of functions can be achieved: one kind extracting waste heat in external condition under normal circumstances
Hydro-thermal amount produces required middle temperature-heat-source；Another kind occurs remaining hot water in external condition and cuts off the water supply under abnormal condition, need to only pass through
The valve transfer of unit itself, heat pump unit can be transformed into direct heating process for thermal flow process from original, in no waste heat
In the case of heat is added, required middle temperature-heat-source is produced out.It operates very easy, solves in the case of previous remaining hot water cuts off the water supply,
Heat pump unit can only shut down the significant problem of temperature-heat-source in needed for can not producing, and avoid caused by production technology or life not
Benefit influences.Due to heat pump itself realize remaining hot water cut off the water supply situation when remain to produce middle temperature-heat-source, system is just not required to be arranged spare
Heat exchanger, also reduce system investment cost.So the present invention also has extraordinary economic benefit.
Detailed description of the invention
Fig. 1 is previous direct combustion type first class lithium bromide absorptive heat pump unit flow diagram.
Fig. 2 is the direct combustion type first class lithium bromide absorptive heat pump unit flow diagram of the invention with direct heating.
In figure:
Direct combustion generator 1
Condenser 2
Solution heat exchanger 3
Evaporator 4
Absorber 5
Weak solution liquid capsule 6
Solution pump discharge pipe 7
Solution pump 8
Water as refrigerant liquid capsule 9
Cryogenic fluid pump 10
Water as refrigerant sampling valve 11
Evaporator water as refrigerant by-passing valve 12
Evaporator cryogen water regulating valve 13
U-tube 14, weak solution bypass pipe 15
Weak solution by-passing valve 16
Condenser water as refrigerant bypass pipe 17
Condenser water as refrigerant by-passing valve 18
Condenser water as refrigerant switches ball valve 19.
Specific embodiment
As shown in Fig. 2, the present invention is on previous direct combustion type first class lithium bromide absorptive heat pump crew base, in solution
A weak solution bypass pipe 15 is added between pump discharge pipe 7 and water as refrigerant liquid capsule 9, and a weak solution by-passing valve 16 is set on it；
Condenser water as refrigerant switching ball valve 19 is added in U-tube 14 of the condenser water as refrigerant into evaporator, while in the condenser
Condenser water as refrigerant before water as refrigerant switching ball valve is cold into adding one between 5 cylinder body bottom of U-tube 14 and absorber of evaporator
Condenser water as refrigerant bypass pipe 17, and a condenser water as refrigerant by-passing valve 18 is set on it.
Heat pump unit external condition (referring to fuel, remaining hot water, hot water conditions) is under normal circumstances, weak solution by-passing valve 16, cold
Condenser water as refrigerant by-passing valve 18 is in close state, and condenser water as refrigerant switching ball valve 19 is in the open state, and heat pump unit is still
So press previous heat supply process flow operation.
It cuts off the water supply under abnormal condition when remaining hot water occurs for external condition, weak solution by-passing valve 16, condenser water as refrigerant bypass
Valve 18 is in the open state, and condenser water as refrigerant switching ball valve 19 is in close state, and heat pump unit presses direct confession of the invention
Thermal flow process operation.At this point, direct combustion generator makes weak solution be condensed into concentrated solution and isolates cold by fuel combustion heated solution
Agent steam, hot water are still introduced into absorber 5 and enter back into condenser 2, and hot water is absorbed in condenser 2 from steam generator 1
The condensation heat of refrigerant vapour and heat up, the water as refrigerant after condensation is directly entered absorber cylinder through condenser water as refrigerant bypass pipe 17
Concentrated solution under drenching in body bottom, with absorber 5 is mixed into weak solution, and weak solution is sent into direct combustion generator 1 by solution pump 8
Concentration, the refrigerant vapour that direct combustion generator 1 occurs to come out enter the condensation of condenser 2, and the above process constantly recycles progress, do not having
Under conditions of waste heat heat is added, required middle temperature-heat-source is produced out with direct heating mode.Since remaining hot water is cut off the water supply, do not have
Waste heat heat is added, and refrigerant vapour just can not be evaporated in evaporator 4 and is absorbed for 5 concentrated solution of absorber, but in absorber heat-transfer pipe
There is the hot water lower than concentrated solution temperature to flow through, so, strong solution concentration of the leaching outside 5 heat-transfer pipe of absorber is constant and temperature can drop
It is low, reduce absorption pressure, evaporating pressure also just reduces, and the heat for the remaining hot water of 4 heat-transfer pipe memory of evaporator not being vented is just
It can be sucked away and temperature reduction, to prevent heat-transfer pipe of evaporator frozen pipe, be bypassed part weak solution by weak solution bypass pipe 15
Enter in water as refrigerant liquid capsule 9, cryogen coolant-temperature gage will be promoted, and the water as refrigerant for being mixed into solution is sent into evaporator heat transfer by cryogenic fluid pump 10
Pipe surface, heat-transfer pipe of evaporator surface temperature increase, this circulation is constantly carrying out simultaneously with solution circulation, thus prevent
The potential factor of evaporator frozen pipe ensure that in the case where remaining hot water cuts off the water supply abnormal condition, the direct combustion type first kind with direct heating
Lithium bromide absorption type heat pump unit being capable of safe and stable operation.
When external condition restores normal, that is, when in hot water stream of having a surplus pervaporation device heat-transfer pipe, the direct combustion with direct heating
Type first class lithium bromide absorptive heat pump unit need to only switch over valve among the above, so that it may press previous heat pump heat supply process
Operation continues the waste heat of recovery waste heat water, produces required middle temperature-heat-source.Heat pump heat supply process is transferred in direct heating process
Initial stage, so needing to open evaporator water as refrigerant by-passing valve, carries out water as refrigerant due to being mixed into weak solution in evaporator water as refrigerant
Regeneration treatment, until water as refrigerant is than re-qualified.
Above scheme be suitable for the heat pump unit can be the unit (as shown in the figure) with cryogen heat regenerator, can also be with
It is two sections or two sections or more units (as shown in the figure).
Claims (3)
1. a kind of direct combustion type first class lithium bromide absorptive heat pump unit with direct heating, including direct combustion generator (1), condensation
Device (2), evaporator (4), absorber (5), solution heat exchanger (3), solution pump (8) and cryogenic fluid pump (10), it is characterised in that:
A weak solution bypass pipe (15) is added between solution pump discharge pipe (7) and water as refrigerant liquid capsule (9), and a weak solution is set on it
By-passing valve (16)；Condenser water as refrigerant switching ball valve (19) is added in U-tube (14) of the condenser water as refrigerant into evaporator,
U-tube (14) and absorber (5) cylinder of the condenser water as refrigerant before the condenser water as refrigerant switches ball valve into evaporator simultaneously
A condenser water as refrigerant bypass pipe (17) is added between body bottom, and a condenser water as refrigerant by-passing valve (18) is set on it；
When heat pump unit external condition under normal circumstances, weak solution by-passing valve (16), condenser water as refrigerant by-passing valve (18) are in
Closed state, it is in the open state that condenser water as refrigerant switches ball valve (19)；When external condition occur remaining hot water cut off the water supply it is improper
In the case of, weak solution by-passing valve (16), condenser water as refrigerant by-passing valve (18) are in the open state, and condenser water as refrigerant switches ball
Valve (19) is in close state.
2. a kind of direct combustion type first class lithium bromide absorptive heat pump unit with direct heating according to claim 1,
It is characterized in that the heat pump unit is the unit with cryogen heat regenerator.
3. a kind of direct combustion type first class lithium bromide absorptive heat pump unit with direct heating according to claim 1,
It is characterized in that the heat pump unit is two sections or more units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999713.2A CN106482382B (en) | 2016-11-14 | 2016-11-14 | Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999713.2A CN106482382B (en) | 2016-11-14 | 2016-11-14 | Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating |
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| CN106482382A CN106482382A (en) | 2017-03-08 |
| CN106482382B true CN106482382B (en) | 2019-06-07 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989536A (en) * | 2017-04-14 | 2017-07-28 | 双良节能系统股份有限公司 | Multifunctional steam type first class lithium bromide absorptive heat pump unit |
| CN106931678A (en) * | 2017-04-14 | 2017-07-07 | 双良节能系统股份有限公司 | Steam type first-class lithium bromide absorption type heat pump unit with refrigerating function |
| CN108387024B (en) * | 2018-03-29 | 2024-04-12 | 冰山松洋制冷(大连)有限公司 | Low-temperature waste heat recovery type lithium bromide absorption type hot and cold water system |
| CN108489138A (en) * | 2018-04-25 | 2018-09-04 | 双良节能系统股份有限公司 | Direct combustion single-effect lithiumbromide absorption type heat pump assembly with flue gas heat-exchange unit |
| CN109458751B (en) * | 2018-12-27 | 2024-04-02 | 双良节能系统股份有限公司 | On-line detection density hot water type lithium bromide absorption type low-temperature water chilling unit |
| CN110307662B (en) * | 2019-07-08 | 2023-12-22 | 双良节能系统股份有限公司 | Lithium bromide absorption unit for direct-fired heat pump and hot water type refrigeration |
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| JPH0560416A (en) * | 1991-08-28 | 1993-03-09 | Kawaju Reinetsu Kogyo Kk | Method and device for taking out high temperature hot water in absorption type cold and hot water supplying machine |
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| CN106482382A (en) | 2017-03-08 |
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