CN105115079A - Water cold storage system of central air conditioner - Google Patents

Water cold storage system of central air conditioner Download PDF

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Publication number
CN105115079A
CN105115079A CN201510514836.8A CN201510514836A CN105115079A CN 105115079 A CN105115079 A CN 105115079A CN 201510514836 A CN201510514836 A CN 201510514836A CN 105115079 A CN105115079 A CN 105115079A
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China
Prior art keywords
cold
valve
water
pipeline
main frame
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CN201510514836.8A
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Chinese (zh)
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CN105115079B (en
Inventor
宁方亮
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JIANGSU TEKENE ENERGY-SAVING TECHNOLOGY Co Ltd
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JIANGSU TEKENE ENERGY-SAVING TECHNOLOGY Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

Abstract

A water cold storage system of a central air conditioner comprises a main unit, a cooling water circulation pipeline connected with the main unit and a chilled water circulation pipeline connected with the main unit. The cooling water circulation pipeline comprises a cooling tower, a water inlet pipeline at the upper end of the cooling tower is connected with the main unit and provided with a valve V11, and a water outlet pipeline at the lower end of the cooling tower is connected with the main unit and provided with a cooling pump and a valve V13. The chilled water circulation pipeline comprises a pipeline connected with a water distributor and a pipeline connected with a water collector, the pipeline connected with the water distributor is provided with a valve V1, and the pipeline connected with the water collector is provided with a chilling pump and a valve V3. The water cold storage system further comprises a cold storage and release system. The cold storage and release system comprises a cold storage pool, a cold storage circulation pipeline connected with the cold storage pool and a cold release circulation pipeline connected with the cold storage pool. The cold storage effect is good, the manufacturing size of the cold storage pool is greatly reduced, energy is saved, and the operating cost is low.

Description

A kind of central air-conditioning chilled water storage system
Technical field
The present invention relates to central air-conditioning chilled water storage system.
Background technology
Central air-conditioning is the part of modern society's demand.Its energy consumption occupies significant proportion in social energy consumption.In summer, the maximum load of the whole society of China electric load generally appears at 10:00 ~ 12:00, and from 21:00, electric load declines gradually, reaches minimum to about 06:00.The core content of central air-conditioning Cool Storage Technology is exactly " peak load shifting ", namely when power load is low, runs central air conditioner main machine and cold is stored, and when electricity consumption high load capacity, central air conditioner main machine of stopping using, meets cooling needs with the cold release stored.
Like this, electrical network pressure when just can reduce high load capacity, the electricity charge more cheap when simultaneously utilizing electrical network underload.This just can reduce power plant and build more multiple generator in order to the high load capacity of short time.Reduce electric grid investment, grid equipment utilization rate improves.
Cold storage capacity follows heat formula:
Q=CMΔT
Q---cold storage capacity
The specific heat capacity of C---cool storage medium, constant
The quality of M---cool storage medium
Δ T---store temperature difference when letting cool
According to above-mentioned heat formula, identical cold storage capacity, stores the temperature difference let cool larger, and the quality requirement of cool storage medium is less.In other words, the cool storage medium of equal in quality, stores the temperature difference let cool larger, and the cold that can store is more.
One, ice-storage system is one of cold accumulation system conventional at present, and its operation characteristic is:
During paddy electricity, main frame runs ice making operating mode, water is made the ice of subzero 5 DEG C, is stored in ice bank; During ordinary telegram, main frame running refrigerating operating mode, for end directly provides the low-temperature receiver of 7 DEG C; During peak electricity, before the cold of ice bank discharges and terminates, main frame is out of service, and ice bank is end cooling as low-temperature receiver.
Liquid stores for ice by the process of ice conserve cold, belongs to phase transition process.The cold store, put is large compared with simple liquid cold-storage; The occupation of land of ice bank is less.But the ice making main frame different from normal hosts (normal hosts can not run to-5 DEG C) that Xu Yuanzhong needs, in transformation project, needs newly-increased ice-reserving main frame.Ice conserve cold main frame due to be not be operated in common refrigeration host computer operating mode under.About 30% to be declined relative to normal hosts operating efficiency.This reduces the effect of the real saving electric energy of ice conserve cold, even occur the result lost more than gain, simultaneously because system complex cost is higher.
Two, chilled water storage system is another kind of cold accumulation system conventional at present, and its operation characteristic is:
During paddy electricity, the leaving water temperature of main frame is generally set to 4 DEG C (some projects are different), carries out cold-storage, by the water for cooling to 4 in cold accumulating pond DEG C; During ordinary telegram, main frame running refrigerating operating mode, for end directly provides the low-temperature receiver of 7 DEG C; During peak electricity, main frame is out of service, and cold accumulating pond is separately end cooling as low-temperature receiver.
The cold-storage temperature of water cold storage is generally 4 DEG C, compared with 7 DEG C that meet end needs, only has 3 DEG C of temperature difference, and compared with ice conserve cold, the cold-storage device volume that identical cold storage capacity needs is larger; The process of water cold storage is exactly simply reduce water temperature when night, power load was low by central air conditioner main machine in fact, has the advantages such as practical simple.But due to the water tank that the very little needs of the cold-storage temperature difference are huge especially.Area occupied is too large.Invest also high, a lot of place cannot be implemented because place limits project.Need complicated water distribution system simultaneously.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of floor space little, cost of investment is low, applied widely, the central air-conditioning chilled water storage system of low-energy-consumption high-efficiency.
Key problem in technology of the present invention is to propose central air-conditioning cold side chilled water storage system first, the structure that cold accumulating pond terminad different from the past lets cool, and adopts the structure that cold accumulating pond lets cool to main frame condensation end.
For realizing the object of the invention, provide following technical scheme: a kind of central air-conditioning chilled water storage system, comprise main frame, the cooling water circulation pipeline be connected with main frame and the chilled water pipeloop be connected with main frame, described cooling water circulation pipeline comprises cooling tower, cooling tower upper end back with water inlet line connects main frame, water outlet pipeline in cooling tower lower end connects main frame, back with water inlet line is provided with V11 valve, water outlet pipeline in cooling tower lower end is provided with coolant pump and V13 valve, chilled water pipeloop comprises the pipeline connecting water knockout drum, connect the pipeline of water collector, the pipeline of connection water knockout drum is provided with V1 valve, the pipeline of connection water collector is provided with refrigerating water pump, V3 valve, characterized by further comprising and store, let cool system, describedly to store, the system of letting cool comprises cold accumulating pond, the charge cycle pipeline be connected with cold accumulating pond and let cool pipeloop, charge cycle pipeline comprises one end and is connected with main frame, the pipeline that the other end is connected with cold accumulating pond and one end are connected between refrigerating water pump and V3 valve, No. two pipelines that the other end is connected with cold accumulating pond, a described pipeline connects cold-storage heat-exchanger, V2 valve is provided with between main frame and cold-storage heat-exchanger, cold-storage pump and V5 valve is disposed with between cold-storage heat-exchanger and cold accumulating pond, described No. two pipelines connect cold-storage heat-exchanger, V4 valve is provided with between refrigerating water pump and cold-storage heat-exchanger, V6 valve is provided with between cold-storage heat-exchanger and cold accumulating pond, the described pipeloop that lets cool comprises one end and is connected with main frame, No. three pipelines, one end of other end connection cold accumulating pond are connected between coolant pump and V13 valve, No. four pipelines that the other end is connected with cold accumulating pond, described No. three pipelines connection lets cool heat exchanger, main frame and let cool between heat exchanger and be provided with V12 valve, let cool between heat exchanger and cold accumulating pond and be provided with V15 valve, described No. four pipelines connection lets cool heat exchanger, coolant pump and let cool between heat exchanger and be provided with V14 valve, lets cool to be disposed with between heat exchanger and cold accumulating pond and lets cool pump, V16 valve.
Beneficial effect of the present invention: main frame chilled water leaving water temperature during cold-storage with normally freeze identical, main frame remains Effec-tive Function;
Cold water when letting cool can use 25 DEG C, and compared with 7 during cold-storage DEG C, the temperature difference 18 DEG C, is significantly higher than 3 DEG C of temperature difference of light water cold-storage.Although 12 of Temperature Difference Ratio ice conserve cold DEG C of temperature difference are large, consider the phase transition process of ice conserve cold, the cool storage medium of equal in quality, central air-conditioning cold side water cold storage is substantially identical with the cold storage capacity of ice conserve cold, but cost is lower; Central air-conditioning cold side water cold storage is not high to the temperature requirement of cold-storage water, and namely less demanding to the water distribution of cold accumulating pond, the cost of cold accumulating pond is lower than light water cold-storage.
Accompanying drawing explanation
Fig. 1 is system schematic of the present invention.
Detailed description of the invention
Embodiment 1: a kind of central air-conditioning chilled water storage system, comprise main frame 1, the cooling water circulation pipeline 2 be connected with main frame 1 and the chilled water pipeloop 3 be connected with main frame 1, described cooling water circulation pipeline 2 comprises cooling tower 2.1, cooling tower 2.1 upper end back with water inlet line 2.2 connects main frame 1, cooling tower 2.1 lower end water outlet pipeline 2.3 connects main frame 1, back with water inlet line 2.2 is provided with V11 valve, lower end water outlet pipeline 2.3 is provided with coolant pump P11 and V13 valve, chilled water pipeloop 3 comprises the pipeline 3.1 connecting water knockout drum 4, connect the pipeline 3.2 of water collector 5, the pipeline 3.1 of connection water knockout drum 4 is provided with V1 valve, the pipeline 3.2 of connection water collector 5 is provided with refrigerating water pump p1, V3 valve, also comprise and storing, let cool system, describedly to store, the system of letting cool comprises cold accumulating pond 7, the charge cycle pipeline 6.1 be connected with cold accumulating pond 7 and let cool pipeloop 6.2, charge cycle pipeline 6.1 comprises one end and is connected with main frame 1, the pipeline 6.1.1 that the other end is connected with cold accumulating pond 7 and one end are connected between refrigerating water pump P1 and V3 valve, No. two pipeline 6.1.2 that the other end is connected with cold accumulating pond 7, a described pipeline 6.1.1 connects cold-storage heat-exchanger 8, V2 valve is provided with between main frame 1 and cold-storage heat-exchanger 8, cold-storage pump P2 and V5 valve is disposed with between cold-storage heat-exchanger 8 and cold accumulating pond 7, described No. two pipeline 6.1.2 connect cold-storage heat-exchanger 8, V4 valve is provided with between refrigerating water pump P1 and cold-storage heat-exchanger 8, V6 valve is provided with between cold-storage heat-exchanger 8 and cold accumulating pond 7, the described pipeloop 6.2 that lets cool comprises one end and is connected with main frame 1, the other end connects No. three pipeline 6.2.1 of cold accumulating pond 7, one end is connected between coolant pump P11 and V13 valve, No. four pipeline 6.2.2 that the other end is connected with cold accumulating pond 7, described No. three pipeline 6.2.1 connection lets cool heat exchanger 9, main frame 1 and let cool between heat exchanger 9 and be provided with V12 valve, let cool between heat exchanger 9 and cold accumulating pond 7 and be provided with V15 valve, described No. four pipeline 6.2.2 connection lets cool heat exchanger 9, coolant pump P11 and let cool between heat exchanger 9 and be provided with V14 valve, let cool to be disposed with between heat exchanger 9 and cold accumulating pond 7 and let cool pump P12, V16 valve.
Valve, water pump opening table during operation:
Zero valve open, water pump operation
● valve closing, water pump are closed
◎ valve regulated aperture, testing pump run
The operation characteristic of central air-conditioning cold side water cold storage:
1., during paddy electricity, the leaving water temperature identical with normal cooling (7 DEG C) that main frame is arranged, carries out cold-storage, by the water for cooling to 7 in cold accumulating pond DEG C;
2., during ordinary telegram, main frame running refrigerating operating mode, for end directly provides the low-temperature receiver of 7 DEG C;
3., during peak electricity, after the cold water of cold accumulating pond mixes with the backwater of cooling tower, supply water to main frame condensation end.

Claims (1)

1. a central air-conditioning chilled water storage system, comprise main frame, the cooling water circulation pipeline be connected with main frame and the chilled water pipeloop be connected with main frame, described cooling water circulation pipeline comprises cooling tower, cooling tower upper end back with water inlet line connects main frame, water outlet pipeline in cooling tower lower end connects main frame, back with water inlet line is provided with V11 valve, water outlet pipeline in lower end is provided with coolant pump and V13 valve, chilled water pipeloop comprises the pipeline connecting water knockout drum, connect the pipeline of water collector, the pipeline of connection water knockout drum is provided with V1 valve, the pipeline of connection water collector is provided with refrigerating water pump, V3 valve, characterized by further comprising and store, let cool system, describedly to store, the system of letting cool comprises cold accumulating pond, the charge cycle pipeline be connected with cold accumulating pond and let cool pipeloop, charge cycle pipeline comprises one end and is connected with main frame, the pipeline that the other end is connected with cold accumulating pond and one end are connected between refrigerating water pump and V3 valve, No. two pipelines that the other end is connected with cold accumulating pond, a described pipeline connects cold-storage heat-exchanger, V2 valve is provided with between main frame and cold-storage heat-exchanger, cold-storage pump and V5 valve is disposed with between cold-storage heat-exchanger and cold accumulating pond, described No. two pipelines connect cold-storage heat-exchanger, V4 valve is provided with between refrigerating water pump and cold-storage heat-exchanger, V6 valve is provided with between cold-storage heat-exchanger and cold accumulating pond, the described pipeloop that lets cool comprises one end and is connected with main frame, No. three pipelines, one end of other end connection cold accumulating pond are connected between coolant pump and V13 valve, No. four pipelines that the other end is connected with cold accumulating pond, described No. three pipelines connection lets cool heat exchanger, main frame and let cool between heat exchanger and be provided with V12 valve, let cool between heat exchanger and cold accumulating pond and be provided with V15 valve, described No. four pipelines connection lets cool heat exchanger, coolant pump and let cool between heat exchanger and be provided with V14 valve, lets cool to be disposed with between heat exchanger and cold accumulating pond and lets cool pump, V16 valve.
CN201510514836.8A 2015-08-21 2015-08-21 A kind of central air-conditioning chilled water storage system Active CN105115079B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106152341A (en) * 2016-05-31 2016-11-23 广州泰阳能源科技有限公司 A kind of double low-temperature receiver multi-state chilled water storage system
CN109282456A (en) * 2018-09-18 2019-01-29 中国建筑西北设计研究院有限公司 Let cool the control method of the dispersible independently operated large-scale centralized air-conditioning system of control
CN109323346A (en) * 2018-09-18 2019-02-12 中国建筑西北设计研究院有限公司 A kind of control method of the large-scale centralized air-conditioning system with distributed cold and heat source

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5490847A (en) * 1977-12-27 1979-07-18 Mitsubishi Electric Corp Cold storing type air conditioner
JPH06109291A (en) * 1992-09-28 1994-04-19 Toshiba Corp Cold accumulation type air conditioner
JPH06137615A (en) * 1992-10-26 1994-05-20 Matsushita Electric Ind Co Ltd Cold accumulation apparatus
CN101334203A (en) * 2008-08-04 2008-12-31 龙涛 Method for enhancing cold-storage density of cold storage air conditioner system and cold storage air conditioner system
CN201753965U (en) * 2010-08-02 2011-03-02 肖安 Central air-conditioning chilled water storage peak-shifting and valley-filling energy-saving system
CN103162364A (en) * 2013-03-29 2013-06-19 深圳市中鼎空调净化有限公司 Water storage and ice storage tandem type central air conditioning system and operating method thereof
CN203454340U (en) * 2013-09-06 2014-02-26 肖剑仁 Conventional composite cold source and heat source coupled water cold storage air conditioner system based on independent temperature and humidity control
CN204902082U (en) * 2015-08-21 2015-12-23 江苏天纳节能科技有限公司 Central air conditioning water cold -storage system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5490847A (en) * 1977-12-27 1979-07-18 Mitsubishi Electric Corp Cold storing type air conditioner
JPH06109291A (en) * 1992-09-28 1994-04-19 Toshiba Corp Cold accumulation type air conditioner
JPH06137615A (en) * 1992-10-26 1994-05-20 Matsushita Electric Ind Co Ltd Cold accumulation apparatus
CN101334203A (en) * 2008-08-04 2008-12-31 龙涛 Method for enhancing cold-storage density of cold storage air conditioner system and cold storage air conditioner system
CN201753965U (en) * 2010-08-02 2011-03-02 肖安 Central air-conditioning chilled water storage peak-shifting and valley-filling energy-saving system
CN103162364A (en) * 2013-03-29 2013-06-19 深圳市中鼎空调净化有限公司 Water storage and ice storage tandem type central air conditioning system and operating method thereof
CN203454340U (en) * 2013-09-06 2014-02-26 肖剑仁 Conventional composite cold source and heat source coupled water cold storage air conditioner system based on independent temperature and humidity control
CN204902082U (en) * 2015-08-21 2015-12-23 江苏天纳节能科技有限公司 Central air conditioning water cold -storage system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106152341A (en) * 2016-05-31 2016-11-23 广州泰阳能源科技有限公司 A kind of double low-temperature receiver multi-state chilled water storage system
CN109282456A (en) * 2018-09-18 2019-01-29 中国建筑西北设计研究院有限公司 Let cool the control method of the dispersible independently operated large-scale centralized air-conditioning system of control
CN109323346A (en) * 2018-09-18 2019-02-12 中国建筑西北设计研究院有限公司 A kind of control method of the large-scale centralized air-conditioning system with distributed cold and heat source

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