CN103353151B - The ice-storage air-conditioning system of LNG cold energy recycle can be realized - Google Patents
The ice-storage air-conditioning system of LNG cold energy recycle can be realized Download PDFInfo
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Abstract
The invention provides a kind of ice-storage air-conditioning system realizing LNG cold energy recycle, including cold recovery system, ice storage unit, air conditioner load side system, the first ice-reserving pump, refrigeration unit, the invention has the beneficial effects as follows that the ice-storage air-conditioning system of the present invention achieves the recovery of cold energy and the utilization of storage and cold energy, save resource, improve cold energy use efficiency, LNG cold energy cooling collaborative with refrigeration unit, the requirement that user's air conditioning system uses can be met, various resource can be made full use of again, play positive role to effectively reducing energy consumption.
Description
Technical field
The present invention relates to cold energy storage and utilize device, particularly relating to the ice-storage air-conditioning system that can realize LNG cold energy recycle.
Background technology
Ice-storage air-conditioning system is to utilize night low ebb electricity price to carry out ice-reserving, ice-melt cooling during peak electricity tariff on daytime, thus realizing reducing the air conditioning system of operating cost, balance electrical network power load.Traditional ice-storage air-conditioning system low-temperature receiver is more single, generally adopts electrical chillers, and ice storage unit is made up of one or more ice bank, difference ice bank simultaneously cold-storage or simultaneously let cool when system is run.When system introduces other low-temperature receivers, the single operational mode of ice bank cannot meet the requirement of different low-temperature receiver collaborative work.
LNG gasification process can produce a large amount of cold energy, and this part cold energy is wasted mostly at present, causes the waste of resource.It is necessary for the building having cold energy recoverable, the ice-storage air-conditioning system that exploitation conventional energy resource combines with cold energy recycle.LNG cold energy cooling collaborative with electrical chillers, can meet the requirement that user's air conditioning system uses, can make full use of again various resource, play positive role to effectively reducing energy consumption.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of ice-storage air-conditioning system realizing LNG cold energy recycle.
The invention provides a kind of ice-storage air-conditioning system realizing LNG cold energy recycle, including cold recovery system, ice storage unit, air conditioner load side system, first ice-reserving pump, refrigeration unit, described cold recovery system includes primary heat exchanger, secondary heat exchanger, heat exchanging liquid output channel, heat exchanging liquid input channel, refrigerant tank, primary cold recovery pump, second ice-reserving pump, described primary heat exchanger is provided with liquefied natural gas input channel and natural gas output channel, described heat exchanging liquid output channel one end connects with described primary heat exchanger, the described heat exchanging liquid output channel other end connects with described secondary heat exchanger, described heat exchanging liquid output channel is sequentially installed with described refrigerant tank and the cold recovery pump of described primary, described heat exchanging liquid input channel one end connects with described secondary heat exchanger, the described heat exchanging liquid input channel other end connects with described primary heat exchanger；Described ice storage unit includes the first Ice Storage Tank, second Ice Storage Tank, first valve, second valve, 5th valve, 6th valve, 7th valve, 8th valve, the first system pipeline, second system pipeline, 3rd system pipeline, Quaternary system road under the overall leadership, described first Ice Storage Tank is in parallel with described second Ice Storage Tank, described first Ice Storage Tank is provided with for feed liquor and the first ice bank pipeline and the second ice bank pipeline that go out liquid, described second Ice Storage Tank is provided with for feed liquor and the 3rd ice bank pipeline and the 4th ice bank pipeline that go out liquid, described first ice bank pipeline connects with described 3rd system pipeline respectively with described 3rd ice bank pipeline, described second ice bank pipeline and described 4th ice bank pipeline respectively with described Quaternary system unite pipeline communication；Described first valve is arranged at the Quaternary system road under the overall leadership place between described second ice bank pipeline and described 4th ice bank pipeline, described second valve is arranged at the 3rd system pipeline place between described first ice bank pipeline and described 3rd ice bank pipeline, described 7th valve is positioned at described first ice bank pipeline place, and described 8th valve is positioned at described 3rd ice bank pipeline place；Described the first system pipeline and described first ice bank pipeline communication, described 6th valve is arranged at described the first system pipeline place, described second system pipeline and described second ice bank pipeline communication, and described 5th valve is arranged at described second system pipeline place；Described second ice-reserving pump is arranged on described 3rd system pipeline, and described secondary heat exchanger is united with described 3rd system pipeline and described Quaternary system pipeline communication respectively；Described first ice-reserving pump input and described second system pipeline communication, described first ice-reserving pump output terminal connects with described refrigeration unit input, described refrigeration unit outfan and described the first system pipeline communication；Described air conditioner load side system includes ice-melt pump, plate type heat exchanger, water knockout drum, water collector, differential-pressure bypass valve, chilled water pump, the first connection pipeline, the second connection pipeline, the first circulating line, the second circulating line, described first connects pipeline one end is connected with described the first system pipeline, described first connects the pipeline other end connects with described plate type heat exchanger, and described ice-melt pump is arranged on described first and connects on pipeline；Described second connects pipeline one end is connected with described second system pipeline, and described second connects the pipeline other end connects with described plate type heat exchanger；Described first circulating line one end connects with described plate type heat exchanger, and the described first circulating line other end connects with described water knockout drum；Described differential-pressure bypass valve it is connected between described water knockout drum and described water collector；Described second circulating line one end connects with described water collector, and the described second circulating line other end connects with described plate type heat exchanger, and described chilled water pump is arranged on described second circulating line.
As a further improvement on the present invention, described cold recovery system also includes air-heating type gasifier and pressure regulating metering device, and described air-heating type gasifier and pressure regulating metering device are sequentially arranged on described natural gas output channel.
As a further improvement on the present invention, described air conditioner load side system includes plate and changes by-pass line, the 9th valve, described plate changes by-pass line one end and is connected pipeline communication with described first, described plate changes the by-pass line other end and is connected pipeline communication with described second, and described 9th valve is arranged on described plate and changes on by-pass line.
As a further improvement on the present invention, described air conditioner load side system also includes the tenth valve, and described tenth valve is arranged on described first circulating line.
As a further improvement on the present invention, described air conditioner load side system includes the 3rd valve and the 4th valve, described 3rd valve is installed on described the first system pipeline, and described 3rd valve is adjacent to described the first system pipeline and is connected pipeline junction point position with described first；Described 4th valve is installed on described second system pipeline, and described 4th valve is adjacent to described second system pipeline and is connected pipeline junction point position with described second.
As a further improvement on the present invention, the pipeline of described refrigeration unit outfan and described the first system pipeline communication is provided with the 11st valve, described 3rd valve is the 3rd electrodynamic valve, described 4th valve is the 4th electrodynamic valve, described 9th valve is the 9th electrodynamic valve, described tenth valve is the tenth electrodynamic valve, and described 11st valve is the 11st electrodynamic valve.
As a further improvement on the present invention, described 5th valve is the 5th electrodynamic valve, on described second system pipeline and be positioned at described 5th electrodynamic valve both sides and be respectively provided with a block valve；Described 6th valve is the 6th electrodynamic valve, on described the first system pipeline and be positioned at described 6th electrodynamic valve both sides and be respectively provided with a block valve.
As a further improvement on the present invention, described first valve is the first electrodynamic valve, on the Quaternary system road under the overall leadership between described second ice bank pipeline and described 4th ice bank pipeline and be positioned at described first electrodynamic valve both sides and be respectively provided with a block valve；Described second valve is the second electrodynamic valve, on the 3rd system pipeline between described first ice bank pipeline and described 3rd ice bank pipeline and be positioned at described second electrodynamic valve both sides and be respectively provided with a block valve.
As a further improvement on the present invention, described 7th valve is the 7th electrodynamic valve, on described first ice bank pipeline and be positioned at described 7th electrodynamic valve both sides and be respectively provided with a block valve；Described 8th valve is the 8th electrodynamic valve, on described 3rd ice bank pipeline and be positioned at described 8th electrodynamic valve both sides and be respectively provided with a block valve.
As a further improvement on the present invention, described second ice bank pipeline is provided with block valve, and described 4th ice bank pipeline is provided with block valve.
The invention has the beneficial effects as follows: the ice-storage air-conditioning system of the present invention achieves the recovery of cold energy and the utilization of storage and cold energy, save resource, improve cold energy use efficiency, LNG cold energy cooling collaborative with refrigeration unit, the requirement that user's air conditioning system uses can be met, various resource can be made full use of again, play positive role to effectively reducing energy consumption.
Accompanying drawing explanation
Fig. 1 is the ice-storage air-conditioning system theory diagram of the present invention.
Fig. 2 be the present invention operational mode control mode table.
Detailed description of the invention
As shown in Figure 1, the invention discloses a kind of ice-storage air-conditioning system realizing LNG cold energy recycle, including cold recovery system 4, ice storage unit 10, air conditioner load side system 3, first ice-reserving pump 6, refrigeration unit 7, described cold recovery system 4 includes primary heat exchanger 401, secondary heat exchanger 402, heat exchanging liquid output channel 403, heat exchanging liquid input channel 404, refrigerant tank 405, primary cold recovery pump 406, second ice-reserving pump 5, described primary heat exchanger 401 is provided with liquefied natural gas input channel 407 and natural gas output channel 408, described heat exchanging liquid output channel 403 one end connects with described primary heat exchanger 401, described heat exchanging liquid output channel 403 other end connects with described secondary heat exchanger 402, described heat exchanging liquid output channel 403 is sequentially installed with described refrigerant tank 405 and the cold recovery pump 406 of described primary, described heat exchanging liquid input channel 404 one end connects with described secondary heat exchanger 402, described heat exchanging liquid input channel 404 other end connects with described primary heat exchanger 401；Described ice storage unit 10 includes the first Ice Storage Tank 1, second Ice Storage Tank 2, first valve, second valve, 5th valve, 6th valve, 7th valve, 8th valve, the first system pipeline 101, second system pipeline 102, 3rd system pipeline 103, Quaternary system road 104 under the overall leadership, described first Ice Storage Tank 1 is in parallel with described second Ice Storage Tank 2, described first Ice Storage Tank 1 is provided with for feed liquor and the first ice bank pipeline 105 and the second ice bank pipeline 106 going out liquid, described second Ice Storage Tank 2 is provided with for feed liquor and the 3rd ice bank pipeline 107 and the 4th ice bank pipeline 108 going out liquid, described first ice bank pipeline 105 connects with described 3rd system pipeline 103 respectively with described 3rd ice bank pipeline 107, described second ice bank pipeline 106 connects with described Quaternary system road 104 under the overall leadership respectively with described 4th ice bank pipeline 108；Described first valve is arranged at the Quaternary system road 104 under the overall leadership place between described second ice bank pipeline 106 and described 4th ice bank pipeline 108, described second valve is arranged at the 3rd system pipeline 103 place between described first ice bank pipeline 105 and described 3rd ice bank pipeline 107, described 7th valve is positioned at described first ice bank pipeline 105 place, and described 8th valve is positioned at described 3rd ice bank pipeline 107 place；Described the first system pipeline 101 connects with described first ice bank pipeline 105, described 6th valve is arranged at described the first system pipeline 101 place, described second system pipeline 102 connects with described second ice bank pipeline 106, and described 5th valve is arranged at described second system pipeline 102 place；Described second ice-reserving pump 5 is arranged on described 3rd system pipeline 103, and described secondary heat exchanger 402 connects with described 3rd system pipeline 103 and described Quaternary system road 104 under the overall leadership respectively；Described first ice-reserving pump 6 input connects with described second system pipeline 102, and described first ice-reserving pump 6 outfan connects with described refrigeration unit 7 input, and described refrigeration unit 7 outfan connects with described the first system pipeline 101；Described air conditioner load side system 3 includes ice-melt pump 301, plate type heat exchanger 302, water knockout drum 303, water collector 304, differential-pressure bypass valve 305, chilled water pump the 306, first connection pipeline the 307, second connection pipeline the 308, first circulating line the 309, second circulating line 310, described first connects pipeline 307 one end is connected with described the first system pipeline 101, described first connects pipeline 307 other end connects with described plate type heat exchanger 302, and described ice-melt pump 301 is arranged on described first and connects on pipeline 307；Described second connects pipeline 308 one end is connected with described second system pipeline 102, and described second connects pipeline 308 other end connects with described plate type heat exchanger 302；Described first circulating line 309 one end connects with described plate type heat exchanger 302, and described first circulating line 309 other end connects with described water knockout drum 303；Described differential-pressure bypass valve 305 it is connected between described water knockout drum 303 and described water collector 304；Described second circulating line 310 one end connects with described water collector 304, and described second circulating line 310 other end connects with described plate type heat exchanger 302, and described chilled water pump 306 is arranged on described second circulating line 310.
LNG in the present invention is the abbreviation of liquefied natural gas.
Described cold recovery system 4 also includes air-heating type gasifier 409 and pressure regulating metering device 410, and described air-heating type gasifier 409 and pressure regulating metering device 410 are sequentially arranged on described natural gas output channel 408.
Described air conditioner load side system 3 includes plate and changes by-pass line the 311, the 9th valve, described plate changes by-pass line 311 one end and is connected pipeline 307 with described first and connects, described plate changes by-pass line 311 other end and is connected pipeline 308 with described second and connects, and described 9th valve is arranged on described plate and changes on by-pass line 311.
Described air conditioner load side system 3 also includes the tenth valve, and described tenth valve is arranged on described first circulating line 309.
Described air conditioner load side system 3 includes the 3rd valve and the 4th valve, and described 3rd valve is installed on described the first system pipeline 101, and described 3rd valve is adjacent to described the first system pipeline 101 and is connected pipeline 307 junction point position with described first；Described 4th valve is installed on described second system pipeline 102, and described 4th valve is adjacent to described second system pipeline 102 and is connected pipeline 308 junction point position with described second.
The pipeline that described refrigeration unit 7 outfan connects with described the first system pipeline 101 is provided with the 11st valve, described 3rd valve is the 3rd electrodynamic valve V3, described 4th valve is the 4th electrodynamic valve V4, described 9th valve is the 9th electrodynamic valve V9, described tenth valve is the tenth electrodynamic valve V10, and described 11st valve is the 11st electrodynamic valve V11.
Described 5th valve is the 5th electrodynamic valve V5, on described second system pipeline 102 and be positioned at described 5th electrodynamic valve V5 both sides and be respectively provided with a block valve；Described 6th valve is the 6th electrodynamic valve V6, on described the first system pipeline 101 and be positioned at described 6th electrodynamic valve V6 both sides and be respectively provided with a block valve.
Described first valve is the first electrodynamic valve V1, on the Quaternary system road under the overall leadership 104 between described second ice bank pipeline 106 and described 4th ice bank pipeline 108 and be positioned at described first electrodynamic valve V1 both sides and be respectively provided with a block valve；Described second valve is the second electrodynamic valve V2, on the 3rd system pipeline 103 between described first ice bank pipeline 105 and described 3rd ice bank pipeline 107 and be positioned at described second electrodynamic valve V2 both sides and be respectively provided with a block valve.
Described 7th valve is the 7th electrodynamic valve V7, on described first ice bank pipeline 105 and be positioned at described 7th electrodynamic valve V7 both sides and be respectively provided with a block valve；Described 8th valve is the 8th electrodynamic valve V8, on described 3rd ice bank pipeline 107 and be positioned at described 8th electrodynamic valve V8 both sides and be respectively provided with a block valve.
Described second ice bank pipeline 106 is provided with block valve, and described 4th ice bank pipeline 108 is provided with block valve.
The ice storage unit 10 of the present invention have employed the mode that two groups of Ice Storage Tank 1,2 DRS is in parallel, and is controlled by the electrodynamic valve between two groups of ice bank 1,2, solves in same time cold-storage and the process let cool.
The cold recovery system 4 of the present invention can reclaim cold energy and the first Ice Storage Tank 1 and/or second Ice Storage Tank 2 of cold energy transmission to ice storage unit are carried out cold-storage, and the first Ice Storage Tank 1 of described ice storage unit and/or the second Ice Storage Tank 2 can provide cold energy to use to air conditioner load side system 3.
In cold recovery system 4, LNG(-162 DEG C) in primary heat exchanger 401, carry out heat exchange with freon (-5 DEG C, R404A), after heat exchange, LNG is gasificated into gas, temperature rises to about-10 DEG C, enter air-heating type gasifier 409 temperature and rise to 15 DEG C, after pressure regulating metering device 410, enter gas distributing system.In primary heat exchanger 401, after heat exchange, temperature is down to about-33 DEG C to freon (-5 DEG C, R404A), secondary heat exchanger 402 is entered through primary cold recovery pump 406, freon (-33 DEG C, R404A) and ethylene glycol solution (-1 DEG C, 30%) heat exchange in secondary heat exchanger 402, after heat exchange, freon temperature is increased to-5 DEG C, returns and forms circulation in primary heat exchanger 401.After secondary heat exchanger 402 heat exchange, temperature is reduced to-6 DEG C to ethylene glycol solution (-1 DEG C, 30%), enters the first Ice Storage Tank 1 and/or the second Ice Storage Tank 2 releases cold.
In ice storage unit 10, Ice-storing ball (phase transition temperature the is 0 DEG C) heat exchange of ethylene glycol solution (-6 DEG C, 30%) and the first Ice Storage Tank 1 and/or the second Ice Storage Tank 2, after heat exchange, ethylene glycol solution temperature rises to-1 DEG C and returns to secondary heat exchanger 402；After heat exchange, the phase transformation solution in Ice-storing ball undergoes phase transition, and is stored by cold, and temperature is 0 DEG C.Heat exchange in Ice Storage Tank is a process of cool, and when the ethylene glycol solution temperature after heat exchange is gradually decrease to-6 DEG C, the ice in Ice Storage Tank stores full, and ice-reserving process terminates.
As shown in Figure 2, by the control valve controlling valve and pipeline before adjustment the first Ice Storage Tank 1 and the second Ice Storage Tank 2 when system is run, realize the process of cool of different low-temperature receiver, it is achieved cold recovery system ice-reserving, refrigeration unit ice-reserving, cold recovery system combine the multiple ice-storage modes such as ice-reserving with refrigeration unit.Simultaneity factor can meet and lets cool demand under air conditioner load side system 3 different conditions, it is achieved the first Ice Storage Tank 1 and the second independent cold-storage of Ice Storage Tank 2, individually let cool, combine cold-storage, combine let cool, cold-storage and let cool five kinds of operating modes simultaneously.The porch of the first Ice Storage Tank 1 and the second Ice Storage Tank 2 is respectively provided with motor-operated control valve V7 and V8 and individually controls the duty of two Ice Storage Tank 1,2.Control principle illustrates as follows:
The first independent cold-storage of Ice Storage Tank 1:
When refrigeration unit 7 and the first ice-reserving pump 6 start, the first electrodynamic valve V1, the second electrodynamic valve V2, the 8th electrodynamic valve V8 close, and the 5th electrodynamic valve V5, the 6th electrodynamic valve V6, the 7th electrodynamic valve V7 open, and refrigeration unit 7 is individually for the first Ice Storage Tank 1 cold-storage.
When cold recovery system 4 and the second ice-reserving pump 5 start, the 5th electrodynamic valve V5, the 6th electrodynamic valve V6, the 8th electrodynamic valve V8 close, and the first electrodynamic valve V1, the second electrodynamic valve V2, the 7th electrodynamic valve V7 open, and cold recovery system 4 is individually for the first Ice Storage Tank 1 cold-storage.
The second independent cold-storage of Ice Storage Tank 2:
When refrigeration unit 7 and the first ice-reserving pump 6 start, first electrodynamic valve V1, the second electrodynamic valve V2, the 5th electrodynamic valve V5, the 6th electrodynamic valve V6, the 8th electrodynamic valve V8 open, 3rd electrodynamic valve V3, the 4th electrodynamic valve V4, the 7th electrodynamic valve V7 close, and refrigeration unit 7 is individually for the second Ice Storage Tank 2 cold-storage.
When cold recovery system 4 and the second ice-reserving pump 5 start, the first electrodynamic valve V1, the second electrodynamic valve V2, the 5th electrodynamic valve V5, the 6th electrodynamic valve V6, the 7th electrodynamic valve V7 close, and the 8th electrodynamic valve V8 opens, and cold recovery system 4 is individually for the second Ice Storage Tank 2 cold-storage.
First Ice Storage Tank 1 and the second Ice Storage Tank 2 combine cold-storage:
When refrigeration unit 7 and the first ice-reserving pump 6 start, first electrodynamic valve V1, the second electrodynamic valve V2, the 5th electrodynamic valve V5, the 6th electrodynamic valve V6, the 7th electrodynamic valve V7, the 8th electrodynamic valve V8 open, 3rd electrodynamic valve V3, the 4th electrodynamic valve V4 close, and refrigeration unit 7 is the first Ice Storage Tank 1 and the second Ice Storage Tank 2 cold-storage simultaneously.
When cold recovery system 4 and the second ice-reserving pump 5 start, first electrodynamic valve V1, the second electrodynamic valve V2, the 7th electrodynamic valve V7, the 8th electrodynamic valve V8 open, 5th electrodynamic valve V5, the 6th electrodynamic valve V6 close, and cold recovery system 4 is the first Ice Storage Tank 1 and the second Ice Storage Tank 2 cold-storage simultaneously.
When refrigeration unit 7 is opened with cold recovery system 4 simultaneously, first ice-reserving pump the 6, second ice-reserving pump 5 starts, first electrodynamic valve V1, the second electrodynamic valve V2, the 3rd electrodynamic valve V3, the 4th electrodynamic valve V4 close, 5th electrodynamic valve V5, the 6th electrodynamic valve V6, the 7th electrodynamic valve V7, the 8th electrodynamic valve V8 open, refrigeration unit 7 and cold recovery system 4 respectively the first Ice Storage Tank 1 and the second Ice Storage Tank 2 cold-storage simultaneously.
First Ice Storage Tank 1 individually lets cool:
When the first electrodynamic valve V1, the second electrodynamic valve V2, the 8th electrodynamic valve V8 close, and the 3rd electrodynamic valve V3, the 4th electrodynamic valve V4, the 5th electrodynamic valve V5, the 6th electrodynamic valve V6, the 7th electrodynamic valve V7 open, the first Ice Storage Tank 1 individually lets cool.
Second Ice Storage Tank 2 individually lets cool:
When the 7th electrodynamic valve V7 closes, when the first electrodynamic valve V1, the second electrodynamic valve V2, the 3rd electrodynamic valve V3, the 4th electrodynamic valve V4, the 5th electrodynamic valve V5, the 6th electrodynamic valve V6, the 8th electrodynamic valve V8, unlatching, the second Ice Storage Tank 2 individually lets cool；
First Ice Storage Tank 1 and the second Ice Storage Tank 2 are combined and are let cool:
When the first electrodynamic valve V1, the second electrodynamic valve V2, the 3rd electrodynamic valve V3, the 4th electrodynamic valve V4, the 5th electrodynamic valve V5, open as the 6th electrodynamic valve V6, the 7th electrodynamic valve V7, the 8th electrodynamic valve V8 time, the first Ice Storage Tank 1 and the second Ice Storage Tank 2 can be combined and let cool.
Simultaneously cold-storage and letting cool:
When the first electrodynamic valve V1, the second electrodynamic valve V2 close, 3rd electrodynamic valve V3, the 4th electrodynamic valve V4, the 5th electrodynamic valve V5, when the 6th electrodynamic valve V6, the 7th electrodynamic valve V7, the 8th electrodynamic valve V8 open time, the first Ice Storage Tank 1 let cool while the second Ice Storage Tank 2 cold-storage.
The present invention is directed to the building of cold energy recycle, adopt the mode that conventional energy resource cold-storage combines with cold recovery cold-storage, the requirement that air conditioning system for building uses can be met, various resource can be made full use of again, promote energy-saving and emission-reduction, improve comprehensive utilization of energy level, have good economic benefit and social benefit.
The ice storage unit 10 of the present invention is respectively provided with Ice Storage Tank according to every kind of low-temperature receiver, and each group Ice Storage Tank is connected in parallel, and the connecting line before the first Ice Storage Tank 1 and the second Ice Storage Tank 2 and between the first Ice Storage Tank 1 and the second Ice Storage Tank 2 arranges adjustment valve.This ice storage unit 10 utilizes is having multiple low-temperature receiver particularly to have in the air conditioning system of cold recovery system 4, it is possible to improve efficiency of energy utilization, reduces operation of air conditioner cost and system stability, is easy to flexibly control.
The ice storage unit 10 of the present invention utilizes adjustment valve to adjust the first Ice Storage Tank 1 of parallel connection and the system flow direction of the second Ice Storage Tank 2 flexibly, make system can realize DRS parallel connection, each ice bank can control flexibly, multiple cold-storage and discharging combination can be realized simultaneously, various resource is made full use of at multi-freezing pipe group net operation or in having the ice-storage air-conditioning system of cold recovery, improve energy utilization rate, effectively reduce energy consumption.
During refrigeration unit 7 ice-reserving, open refrigeration unit 7, the ethylene glycol solution (-6 DEG C, 30%) of refrigeration unit 7 preparation and Ice-storing ball (phase transition temperature the is 0 DEG C) heat exchange in the first Ice Storage Tank 1 and/or the second Ice Storage Tank 2, after heat exchange, ethylene glycol solution temperature rises to-1 DEG C and returns to refrigeration unit 7, forms circulation.After heat exchange, the phase transformation solution in Ice-storing ball undergoes phase transition, and is stored by cold, and temperature is 0 DEG C.When the ethylene glycol solution temperature after heat exchange is gradually decrease to-6 DEG C, the ice in Ice Storage Tank stores full, and ice-reserving process terminates.
When air conditioner load side system 3 lets cool, making ethylene glycol solution (3.5 DEG C, 30%) and chilled water (12 DEG C) heat exchange from water collector 304 output by plate type heat exchanger 302, after heat exchange, ethylene glycol solution temperature rises to 10 DEG C and returns to the first Ice Storage Tank 1 and/or the second Ice Storage Tank 2；After heat exchange, chilled water temperature is down to 7 DEG C and is delivered to air conditioning terminal through water knockout drum 303.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, it is impossible to assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, protection scope of the present invention all should be considered as belonging to.
Claims (7)
1. the ice-storage air-conditioning system that can realize LNG cold energy recycle, it is characterized in that: include cold recovery system (4), ice storage unit (10), air conditioner load side system (3), first ice-reserving pump (6), refrigeration unit (7), described cold recovery system (4) includes primary heat exchanger (401), secondary heat exchanger (402), heat exchanging liquid output channel (403), heat exchanging liquid input channel (404), refrigerant tank (405), primary cold recovery pump (406), second ice-reserving pump (5), described primary heat exchanger (401) is provided with liquefied natural gas input channel (407) and natural gas output channel (408), described heat exchanging liquid output channel (403) one end connects with described primary heat exchanger (401), described heat exchanging liquid output channel (403) other end connects with described secondary heat exchanger (402), described heat exchanging liquid output channel (403) is sequentially installed with described refrigerant tank (405) and the cold recovery pump of described primary (406), described heat exchanging liquid input channel (404) one end connects with described secondary heat exchanger (402), described heat exchanging liquid input channel (404) other end connects with described primary heat exchanger (401)；Described ice storage unit (10) includes the first Ice Storage Tank (1), second Ice Storage Tank (2), first valve, second valve, 5th valve, 6th valve, 7th valve, 8th valve, the first system pipeline (101), second system pipeline (102), 3rd system pipeline (103), Quaternary system road under the overall leadership (104), described first Ice Storage Tank (1) is in parallel with described second Ice Storage Tank (2), described first Ice Storage Tank (1) is provided with for feed liquor and the first ice bank pipeline (105) and the second ice bank pipeline (106) that go out liquid, described second Ice Storage Tank (2) is provided with for feed liquor and the 3rd ice bank pipeline (107) and the 4th ice bank pipeline (108) that go out liquid, described first ice bank pipeline (105) connects with described 3rd system pipeline (103) respectively with described 3rd ice bank pipeline (107), described second ice bank pipeline (106) connects with described Quaternary system road under the overall leadership (104) respectively with described 4th ice bank pipeline (108)；Described first valve is arranged at Quaternary system road under the overall leadership (104) place between described second ice bank pipeline (106) and described 4th ice bank pipeline (108), described second valve is arranged at the 3rd system pipeline (103) place between described first ice bank pipeline (105) and described 3rd ice bank pipeline (107), described 7th valve is positioned at described first ice bank pipeline (105) place, and described 8th valve is positioned at described 3rd ice bank pipeline (107) place；Described the first system pipeline (101) connects with described first ice bank pipeline (105), described 6th valve is arranged at described the first system pipeline (101) place, described second system pipeline (102) connects with described second ice bank pipeline (106), and described 5th valve is arranged at described second system pipeline (102) place；Described second ice-reserving pump (5) is arranged on described 3rd system pipeline (103), and described secondary heat exchanger (402) connects with described 3rd system pipeline (103) and described Quaternary system road under the overall leadership (104) respectively；Described first ice-reserving pump (6) input connects with described second system pipeline (102), described first ice-reserving pump (6) outfan connects with described refrigeration unit (7) input, and described refrigeration unit (7) outfan connects with described the first system pipeline (101)；Described air conditioner load side system (3) includes ice-melt pump (301), plate type heat exchanger (302), water knockout drum (303), water collector (304), differential-pressure bypass valve (305), chilled water pump (306), first connects pipeline (307), second connects pipeline (308), first circulating line (309), second circulating line (310), described first connects pipeline (307) one end is connected with described the first system pipeline (101), described first connects pipeline (307) other end connects with described plate type heat exchanger (302), described ice-melt pump (301) is arranged on described first and connects on pipeline (307)；Described second connects pipeline (308) one end is connected with described second system pipeline (102), and described second connects pipeline (308) other end connects with described plate type heat exchanger (302)；Described first circulating line (309) one end connects with described plate type heat exchanger (302), and described first circulating line (309) other end connects with described water knockout drum (303)；Described differential-pressure bypass valve (305) it is connected between described water knockout drum (303) and described water collector (304)；Described second circulating line (310) one end connects with described water collector (304), and described second circulating line (310) other end connects with described plate type heat exchanger (302), and described chilled water pump (306) is arranged on described second circulating line (310)；
Described cold recovery system (4) also includes air-heating type gasifier (409) and pressure regulating metering device (410), described air-heating type gasifier (409) and pressure regulating metering device (410) and is sequentially arranged on described natural gas output channel (408)；
Described air conditioner load side system (3) includes plate and changes by-pass line (311), the 9th valve, described plate changes by-pass line (311) one end and is connected pipeline (307) connection with described first, described plate changes by-pass line (311) other end and is connected pipeline (308) connection with described second, and described 9th valve is arranged on described plate and changes on by-pass line (311)；
Described air conditioner load side system (3) also includes the tenth valve, and described tenth valve is arranged on described first circulating line (309).
2. ice-storage air-conditioning system according to claim 1, it is characterized in that: described air conditioner load side system (3) includes the 3rd valve and the 4th valve, described 3rd valve is installed on described the first system pipeline (101), and described 3rd valve is adjacent to described the first system pipeline (101) and is connected pipeline (307) junction point position with described first；Described 4th valve is installed on described second system pipeline (102), and described 4th valve is adjacent to described second system pipeline (102) and is connected pipeline (308) junction point position with described second.
3. ice-storage air-conditioning system according to claim 2, it is characterized in that: the pipeline that described refrigeration unit (7) outfan connects with described the first system pipeline (101) is provided with the 11st valve, described 3rd valve is the 3rd electrodynamic valve (V3), described 4th valve is the 4th electrodynamic valve (V4), described 9th valve is the 9th electrodynamic valve (V9), described tenth valve is the tenth electrodynamic valve (V10), and described 11st valve is the 11st electrodynamic valve (V11).
4. ice-storage air-conditioning system according to claim 3, it is characterised in that: described 5th valve is the 5th electrodynamic valve (V5), upper described second system pipeline (102) and be positioned at described 5th electrodynamic valve (V5) both sides and be respectively provided with a block valve；Described 6th valve is the 6th electrodynamic valve (V6), upper described the first system pipeline (101) and be positioned at described 6th electrodynamic valve (V6) both sides and be respectively provided with a block valve.
5. ice-storage air-conditioning system according to claim 4, it is characterized in that: described first valve is the first electrodynamic valve (V1), the Quaternary system road under the overall leadership (104) between described second ice bank pipeline (106) and described 4th ice bank pipeline (108) is gone up and is positioned at described first electrodynamic valve (V1) both sides and is respectively provided with a block valve；Described second valve is the second electrodynamic valve (V2), and the 3rd system pipeline (103) between described first ice bank pipeline (105) and described 3rd ice bank pipeline (107) is gone up and is positioned at described second electrodynamic valve (V2) both sides and is respectively provided with a block valve.
6. ice-storage air-conditioning system according to claim 5, it is characterised in that: described 7th valve is the 7th electrodynamic valve (V7), upper at described first ice bank pipeline (105) and be positioned at described 7th electrodynamic valve (V7) both sides and be respectively provided with a block valve；Described 8th valve is the 8th electrodynamic valve (V8), upper at described 3rd ice bank pipeline (107) and be positioned at described 8th electrodynamic valve (V8) both sides and be respectively provided with a block valve.
7. ice-storage air-conditioning system according to claim 6, it is characterised in that: described second ice bank pipeline (106) is provided with block valve, and described 4th ice bank pipeline (108) is provided with block valve.
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| CN108870604B (en) * | 2018-09-18 | 2024-03-12 | 中国能源建设集团广东省电力设计研究院有限公司 | Air conditioner refrigeration integrated system |
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