CN1041215C - Phase transformation cool-preserving agent for air conditioning refrigeration - Google Patents
Phase transformation cool-preserving agent for air conditioning refrigeration Download PDFInfo
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- CN1041215C CN1041215C CN94119046A CN94119046A CN1041215C CN 1041215 C CN1041215 C CN 1041215C CN 94119046 A CN94119046 A CN 94119046A CN 94119046 A CN94119046 A CN 94119046A CN 1041215 C CN1041215 C CN 1041215C
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- cold
- accumulating
- low
- air conditioner
- agent
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The present invention relates to a cold-accumulating medium for an air conditioner system, particularly to a phase change cold-accumulating agent for an air conditioner refrigerating system. The cold-accumulating agent of the present invention is a low cofusional mixture prepared by mixing two fatty acids, namely octanoic acid and lauric acid, wherein the low cofusional point is from 3.5 DEG C to 5.5 DEG C and the fusion heat is from 139 to 159KJ per kg. The cold-accumulating agent has the advantages of good storage property, a few volume changes in a phase change process, high safety, no toxicity, no corrosion, no inflammability, no explosion, stable chemical property, no stratification and good freezing and thawing reversibility. In addition, the cold-accumulating agent can meet the freezing water requirement of the air conditioner system, can effectively overcome the defects of low water cold-accumulating density and low ice cold-accumulating ice-making temperature, and can have the effects of enhancing refrigeration device performance and power consumption equilibrium so as to meet the cold-accumulating requirement of the air conditioner refrigerating system.
Description
The present invention relates to a kind of cool storage material of air-conditioning refrigerating, particularly a kind of lipid acid phase change cold accumulating agent of air-conditioning refrigerating.
At present, for air conditioner cold accumulation, generally be divided into two big classes in the prior art, a class is the sensible heat cold-storage, and another kind of is the latent heat cold-storage.The sensible heat cold-storage utilizes 2-5 ℃ water at low temperature to carry out cold-storage mostly, and its advantage is that investment is little, and technical requirements is low, and maintenance cost is few.But because the storage density of cold of water is low, the regenerator volume is big, thereby installs cold-storage device additional to existing building and bring certain difficulty, and use range is restricted.The at present ice that adopt of latent heat cool storage medium, ice cold-storage energy-flux density is big, applicable to new, old building more.Its shortcoming is that ice making temperature is low, causes the unit cooler vaporization temperature low excessively, reduces the COP value of unit cooler.
For overcoming the deficiencies in the prior art, the objective of the invention is provides a kind of lipid acid phase change cold accumulating agent for air-conditioning refrigeration system, the performance of this cold storage agent can not only satisfy the requirement of air-conditioning system to cold storage agent, and can overcome the low and low defective of ice latent heat cold-storage ice making temperature of water sensible heat storage density of cold, improve the performance of vaporization temperature and refrigeration equipment.
The present invention is achieved by the following technical solutions: this phase change cold accumulating agent is by two kinds of lipid acid, and promptly sad and lauric acid mixes.
Sad CH
3(CH
2)
6COOH also claims inferior caprylic acid, is the transparent liquid of colorless oil, proportion 0.9105 (20/4 ℃), 16 ℃ of fusing points, 237.5 ℃ of boiling points.
Lauric acid CH
3(CH
2)
10COOH, formal name used at school 12 (alkane) acid, proportion 0.8679 (50/4 ℃), 44 ℃ of fusing points, 225 ℃ of boiling points.
Its compound method is that a certain amount of lauric acid is heated to about 60 ℃, treat that it melts fully after, the sad mixing with an amount of, form a kind of eutectic mixture.After the lauric acid of the sad and 30-10% (weight) of 70-90% (weight) mixed, its eutectoid point was 3.5-5.5 ℃, and Heat of fusion is 139-159KJ/kg, can satisfy the requirement of air-conditioning to sink temperature fully.
The present invention compares with existing Cold Storage Material for Air Conditioning and has the following advantages and beneficial effect: this phase change cold accumulating agent is nontoxic except that having, the non-corrosiveness, performance such as nonflammable, non-explosive, be characterized in that the seasoning performance is good, volume change is little in phase transition process, safe in utilization, stable chemical performance, the energy spontaneous nucleation, no demixing phenomenon, and freeze thawing has reversibility preferably.Neither make the refrigerator vaporization temperature low excessively, can satisfy the requirement of air-conditioning system again with refrigerated water.In addition, also can reach and improve the refrigeration equipment performance, purposes such as the electricity charge are saved in balanced power consumption.
Now working process and the cold-storage mechanism of the present invention in air-conditioning system is described below:
Between the electricity consumption low peak period, utilize electric power, refrigerator work is solidified the phase change cold accumulating agent in the regenerator; During the peak of power consumption, refrigerator is not worked, and heat-eliminating medium is fed in the regenerator, and phase-change material for cold storage absorbs its heat and melts at this moment, coolant temperature is reduced, thereby reach the cooling purpose.
Embodiment:
The sad lauric acid with 20% (weight) of 80% (weight) is mixed mutually, after measured:
Its zero pour is 4.6 ℃
Heat of fusion is 149KJ/kg
Claims (2)
1, a kind of phase change cold accumulating agent of air-conditioning refrigerating is characterized in that by weight being the sad CH of 70%-90%
3(CH
2)
6COOH and weight are 30%-10% lauric acid CH
3(CH
2)
10Two kinds of lipid acid of COOH (laurostearic acid) mix.
2, according to the phase change cold accumulating agent of the described air-conditioning refrigerating of claim 1, it is characterized in that sad weight is 80%, lauric weight is 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94119046A CN1041215C (en) | 1994-12-27 | 1994-12-27 | Phase transformation cool-preserving agent for air conditioning refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94119046A CN1041215C (en) | 1994-12-27 | 1994-12-27 | Phase transformation cool-preserving agent for air conditioning refrigeration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1125758A CN1125758A (en) | 1996-07-03 |
| CN1041215C true CN1041215C (en) | 1998-12-16 |
Family
ID=5039087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94119046A Expired - Fee Related CN1041215C (en) | 1994-12-27 | 1994-12-27 | Phase transformation cool-preserving agent for air conditioning refrigeration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1041215C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322348A (en) * | 2022-01-10 | 2022-04-12 | 嵊州市浙江工业大学创新研究院 | Phase-change material cold storage coupled jet refrigeration system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5039479A (en) * | 1973-07-03 | 1975-04-11 | ||
| JPS5255660A (en) * | 1975-10-31 | 1977-05-07 | Toyoda Machine Works Ltd | Integrating flow meter |
| EP0464840A2 (en) * | 1990-07-06 | 1992-01-08 | Hoechst Aktiengesellschaft | Mixtures for absorption heat pumps and absorption heat transformators |
| CN1094432A (en) * | 1993-04-19 | 1994-11-02 | 董少诗 | Refrigerator functions is extended the cold storage agent of usefulness outward |
-
1994
- 1994-12-27 CN CN94119046A patent/CN1041215C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5039479A (en) * | 1973-07-03 | 1975-04-11 | ||
| JPS5255660A (en) * | 1975-10-31 | 1977-05-07 | Toyoda Machine Works Ltd | Integrating flow meter |
| EP0464840A2 (en) * | 1990-07-06 | 1992-01-08 | Hoechst Aktiengesellschaft | Mixtures for absorption heat pumps and absorption heat transformators |
| CN1094432A (en) * | 1993-04-19 | 1994-11-02 | 董少诗 | Refrigerator functions is extended the cold storage agent of usefulness outward |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1125758A (en) | 1996-07-03 |
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