CN1570536A - Phase transformation heat accumulation system - Google Patents
Phase transformation heat accumulation system Download PDFInfo
- Publication number
- CN1570536A CN1570536A CNA2004100190727A CN200410019072A CN1570536A CN 1570536 A CN1570536 A CN 1570536A CN A2004100190727 A CNA2004100190727 A CN A2004100190727A CN 200410019072 A CN200410019072 A CN 200410019072A CN 1570536 A CN1570536 A CN 1570536A
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- CN
- China
- Prior art keywords
- energy
- heat
- storing
- cold
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000009466 transformation Effects 0.000 title abstract description 3
- 238000009825 accumulation Methods 0.000 title description 22
- 238000004146 energy storage Methods 0.000 claims description 18
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 claims description 10
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 9
- 238000004378 air conditioning Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 125000003827 glycol group Chemical group 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000009834 vaporization Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to the energy-storing technology with phase-changing. This phase-changing energy-storing system is composed of the implement for cold-producing and heating 1, equipment for energy-storing 2, recurring pump 3 and energy-exchanging facilities 4, etc. The circulating medium for phase-changing in the energy-storing equipment is NO2, with mole concentration 100%. Beside the energy-storing room the medium is glycol. The transformation of energy-storing and energy- releasing is completed through the changing of the valve. The advantages of this invention are that: it can be used for cold-producing in summer and heating in the winner; and compared to the air conditioning system by ice-making that only works in the summer, it increases the efficiency of the system, shortens the recycling of the investment, saves more the power rate and reduces energy-storing equipment.
Description
Technical field
The invention belongs to field of air conditioning, be specifically related to have the energy accumulating technique of phase transformation.
Background technology
Along with China's rapid development of economy, for balanced network load, the time-of-use tariffs of each big and medium-sized cities are than more and more high generally all more than 3: 1, be that the peak value period, (various places power office regulation differed, be generally daytime) electricity price be that the valley period (night) is more than 3 times, therefore can utilize the cheap condition of electricity consumption at night to carry out accumulation of energy, the air-conditioning unit be disconnected the energy that discharges the storage at night during peak of power consumption by day.Energy-storage air conditioner system helps the peak load shifting of electric load, reduces the construction of peak load stations, is an economy, environmental protection, energy-saving technology from macroscopic view.At present in the various energy accumulation air conditioner technology that China adopts, the cold-storage technology has accounted for great majority (utilize ice, water usually or be total to dissolved salt and finish), and heat storage technology is used less (being finished by water or paraffin usually), they only use in a certain season (summer or winter) in every year usually, for example: the Beijing area chilling air conditioning system generally moves in 5-9 month, satisfy the requirement of refrigeration in summer, then stop using winter; Running time at southern cold accumulation air-conditioner is longer relatively, but generally also has only the service time about 6 months.For systems for air conditioning, the time of operation is just shorter, and this just along having grown the time limit that investment is reclaimed, has increased the risk of investment.Though the water energy accumulating technique can satisfy the requirement of cold-storage, accumulation of heat simultaneously, along the service time of having grown system, it is to utilize the sensible heat of water to finish storing of energy, require the volume of catch basin very big, heat loss is big, has increased initial cost and running cost, and common buildings is difficult to realize.Suitable accumulation of energy material is the key that constitutes energy-storage system, and seeking novel accumulation of energy material becomes everybody institute's pursuing target naturally.For overcoming the above problems, the present invention intends adopting a kind of cheapness, is easy to get, helps environmental protection and has the suitable molten point and the accumulation of energy material of boiling point, utilize the latent heat of liquefaction of this material and the latent heat of vaporization to finish cold-storage and heat-accumulating process in the energy-storage system, just can reduce to deposit the volume of accumulation of energy material equipment greatly, and can ensure two the season operation uses of this energy-storage system in 1 year, be convenient to recoup capital outlay quickly, reduce risk.
Summary of the invention
The purpose of this invention is to provide a kind of phase-changing energy-storing system that has new working medium.
The present invention is achieved by the following technical programs.With reference to accompanying drawing phase-changing energy-storing system, have Cooling and Heat Source equipment 1, energy storage system 2, circulating pump 3 and heat-exchange apparatus 4 etc., in energy storage system 2, placed phase-changing energy-storing working medium nitrogen dioxide, its molar concentration is 100%.At the used cycle fluid of accumulation of energy side is ethylene glycol, finishes conversion between accumulation of energy, the exoergic by the switching of valve.During accumulation of energy valve 5-1,5-3 and 5-5 are closed, valve 5-2,5-4 and 5-6 open, and constitute the circulatory system by cold (heat) source device 1, energy storage system 2, circulating pump 3-1 and valve 5-2, by cold (heat) source 1 constantly to energy storage system 2 accumulation of energys.During exoergic valve 5-2,5-4,5-5 are closed, valve 5-1,5-3 and 5-6 open, promptly disconnect Cooling and Heat Source equipment 1, constitute the circulatory system, provide cold (heat) amount to the user by heat-exchange apparatus 4 and circulating pump 3-2 by energy storage system 2, circulating pump 3-1 and heat-exchange apparatus 4.Under the cool-storage in summer operating mode, cold source equipment is exported the aqueous solution (mass concentration is 30%) of-15 ℃ ethylene glycol, is-11.2 ℃ nitrogen dioxide curing cold-storage with molten point; Under accumulation of heat in the winter operating mode, heat resource equipment is exported 45 ℃ glycol water, is 21.1 ℃ nitrogen dioxide vaporization accumulation of heat with boiling point.Latent heat of liquefaction under the nitrogen dioxide normal pressure is 3.501kcal/mol (latent heat of liquefaction of water is 1.436kcal/mol), and the latent heat of vaporization is 9.11kcal/mol (latent heat of vaporization of water is 9.717kcal/mol), is easy to obtain, and is cheap.
The effect that the present invention produced is: this system both can move at cool-storage in summer, and also regenerative operation is in the winter time compared ice-chilling air conditioning system (can only at summer operation) and improved system availability, has shortened the investment payback time, has reduced investment risk.Because the accumulation of energy matter utilization latent heat of phase change of this system carries out cold-storage and accumulation of heat, compare water energy-storage system and can only utilize sensible heat to carry out cold-storage and accumulation of heat, use nitrogen dioxide will significantly reduce as this system's floor space of accumulation of energy material, adaptability is stronger.The present invention can unify to seal up for safekeeping to a large amount of harmful substances (nitrogen dioxide) in addition, and centralized management has reduced such harmful substance in the environment, has improved environmental quality.
Description of drawings
Accompanying drawing is work system figure of the present invention.Circulating pump 3-1 is an eg pump among the figure, and circulating pump 3-2 is a water pump.
The specific embodiment
Present embodiment is with 10000m
2Office building is an example.It is the screw type source pump of 250kW that cold (heat) source device 1 is selected input power for use, and nitrogen dioxide solution is poured in the spheroid that organic material makes, and the diameter of spheroid is 12～15 centimetres of sealings, and these spheroids are put in the energy storage system 2.Nitrogen dioxide solution can directly be buied from the manufacturer of nitric acid.Refrigeration duty is 1000kW, and thermic load is 600kW, and the heat exchange area of heat transmission equipment 4 is 100m
2, the flow of circulating pump 3-2 is 50kg/s, the flow of circulating pump 3-1 is 50kg/s.During accumulation of energy valve 5-1,5-3 and 5-5 are closed, valve 5-2,5-4 and 5-6 open, constitute the circulatory system by cold (heat) source device 1, energy storage system 2, circulating pump 3-1 and valve 5-2, by cold (heat) source 1 constantly to energy storage system 2 accumulation of energys, cold-storage operating mode cold storage capacity is 8000kW.h, and accumulation of heat operating mode amount of stored heat is 4800kW.h.During exoergic valve 5-2,5-4,5-5 are closed, valve 5-1,5-3 and 5-6 open, promptly disconnect Cooling and Heat Source equipment 1, constitute the circulatory system by energy storage system 2, circulating pump 3-1 and heat-exchange apparatus 4, provide 8000kW.h cold or 4800kW.h heat by heat-exchange apparatus 4 and circulating pump 3-2 to the user, satisfy the hot and cold amount demand of 8 hours this building peak value periods.
When energy storage system 2 maintenance,,, satisfy user's hot and cold load with the circulatory mediator heat-shift of opposite side with relying on Cooling and Heat Source equipment 1 directly the cycle fluid of low temperature or high temperature to be transported to heat exchanger 4.Under this operating mode: valve 5-2,5-3 and 5-6 close, and valve 5-1,5-4 and 5-5 open.
This phase-changing energy-storing system utilizes the heat of solution low power consumption period (being the valley electricity price) of phase-changing energy-storing material to store cold, the electricity consumption peak value period (electricity price and flat value electricity price during the peak) to user's cooling; Utilize the heat of vaporization of phase-changing energy-storing material to store heat in the low power consumption period (being the valley electricity price), the electricity consumption peak value period (electricity price and flat value electricity price during the peak) to user's heat supply, thereby realize the annual purpose of saving more electricity charge and reducing the energy storage system volume.
Claims (1)
1. phase-changing energy-storing system, have Cooling and Heat Source equipment (1), energy storage system (2), circulating pump (3) and heat-exchange apparatus (4) etc., it is characterized in that having placed phase-changing energy-storing working medium nitrogen dioxide in energy storage system (2), the nitrogen dioxide molar concentration is 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100190727A CN1285875C (en) | 2004-04-23 | 2004-04-23 | Phase transformation heat accumulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100190727A CN1285875C (en) | 2004-04-23 | 2004-04-23 | Phase transformation heat accumulation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1570536A true CN1570536A (en) | 2005-01-26 |
| CN1285875C CN1285875C (en) | 2006-11-22 |
Family
ID=34479627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100190727A Expired - Lifetime CN1285875C (en) | 2004-04-23 | 2004-04-23 | Phase transformation heat accumulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1285875C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968328A (en) * | 2010-09-29 | 2011-02-09 | 北京建筑工程学院 | Phase-change energy storage device |
| CN102607310A (en) * | 2012-04-01 | 2012-07-25 | 昆明理工大学 | Transporting utilizing method of low-temperature excess heat of iron and steel enterprises |
| CN103644612A (en) * | 2013-12-10 | 2014-03-19 | 重庆大学 | Heat source tower heat pump air-conditioning system capable of using cool storage device to assist heating |
-
2004
- 2004-04-23 CN CNB2004100190727A patent/CN1285875C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968328A (en) * | 2010-09-29 | 2011-02-09 | 北京建筑工程学院 | Phase-change energy storage device |
| CN102607310A (en) * | 2012-04-01 | 2012-07-25 | 昆明理工大学 | Transporting utilizing method of low-temperature excess heat of iron and steel enterprises |
| CN103644612A (en) * | 2013-12-10 | 2014-03-19 | 重庆大学 | Heat source tower heat pump air-conditioning system capable of using cool storage device to assist heating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1285875C (en) | 2006-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SINOMA ENERGY DEVELOPMENT CO., LTD. Free format text: FORMER OWNER: TIANJIN UNIVERSITY Effective date: 20081107 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081107 Address after: Torch Hotel, 5 Huaihe Road, Beichen science and Technology Park, Tianjin, Patentee after: Sinoma Energy Conservation Ltd. Address before: Nankai District Wei Jin Road, Tianjin City No. 92 Patentee before: Tianjin University |
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| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Wei Lianyou Document name: Notification of Termination of Patent Right |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 300400 Tianjin city Beichen District Longzhou Road No. 1 Beichen building Patentee after: Sinoma Energy Conservation Ltd. Address before: 300072 Torch Hotel, 5 Huaihe Road, Beichen Science Park, Tianjin, Patentee before: Sinoma Energy Conservation Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300400 Tianjin city Beichen District Longzhou Road No. 1 Beichen building Patentee after: Sinoma Energy Conservation Ltd. Address before: 300400 Tianjin city Beichen District Longzhou Road No. 1 Beichen building Patentee before: Sinoma Energy Conservation Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061122 |