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Heat-transfer medium specially used for solar energy heat pump

A technology of solar heat pump and heat transfer medium, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of high energy consumption, slow heat transfer, and low thermal efficiency of heat transfer media, and achieve less evaporation loss and low freezing point , good thermal conductivity

Inactive Publication Date: 2012-03-07
SUZHOU FANGJIYUAN ENERGY SAVING TECH
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to develop a special heat transfer medium for solar heat pumps in view of the shortcomings of the currently used heat transfer medium, such as large energy consumption, slow heat transfer, and low thermal efficiency. Foam, non-toxic, environmentally friendly, stable performance, and good heat transfer effect, the radiator uses the heat transfer medium of the present invention, which can significantly improve the service life and heat transfer performance

Method used

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  • Heat-transfer medium specially used for solar energy heat pump

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Embodiment 1

[0023] According to the components shown in Table 1 (distilled water is the balance), No. 1-8 heat transfer medium was prepared according to the preparation method disclosed in the present invention.

[0024] Table 1 Composition of heat transfer medium (unit: wt%, balance is distilled water)

[0025] Numbering calcium chloride sodium perborate sodium nitrate Potassium borate sodium benzoate Benzotriazole Absolute ethanol 1 0.15 0.5 0.3 0.8 0.20 0.2 0.5 2 0.27 0.6 0.5 1.0 0.27 0.4 0.7 3 0.35 0.7 0.7 1.2 0.35 0.6 0.8 4 0.40 0.8 0.8 1.5 0.40 0.8 0.9 5 0.47 0.9 0.9 1.8 0.47 0.9 1.0 6 0.55 1.0 1.0 2.0 0.55 1.0 1.2 7 0.60 1.1 1.1 2.3 0.65 1.1 1.5 8 0.65 1.2 1.2 2.5 0.75 1.2 1.75

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Abstract

The invention relates to a heat-transfer medium specially used for a solar energy heat pump, which comprises the following components: 0.15-0.65wt% of calcium chloride, 0.5-1.75wt% of absolute ethyl alcohol, 0.5-1.2wt% of sodium perborate, 0.3-0.8wt% of sodium nitrate, 0.2-0.75wt% of sodium benzoate, 0.3-0.8wt% of potassium borate, 0.2-1.2wt% of benzotriazole and the balance of distilled water. The heat-transfer medium specially used for the solar energy heat pump provided by the invention is characterized by freezing resistance, rust resistance, foam-proof property, non-toxic, environment-friendly property, stable performance and excellent heat-transfer effect.

Description

technical field [0001] The invention relates to a special heat transfer medium for a solar heat pump. Background technique [0002] The most commonly used heat transfer medium is water, and the heat transfer temperature range is 5-90°C. Outside this temperature range, water cannot be used as a heat transfer agent because it tends to freeze or boil. The advantage of using water as a heat transfer agent is good heat transfer effect and low cost, but its disadvantage is that it corrodes equipment and is easy to scale; other commonly used heat transfer media include inorganic salts, such as sodium chloride aqueous solution, calcium chloride Aqueous solution, this kind of heat transfer medium is seriously corrosive to various metals and stainless steel, and has been gradually replaced by organic alcohol heat transfer media, such as sodium perborate aqueous solution and propylene glycol aqueous solution; Lightweight, but still severely corrosive to carbon steel and other metals. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 方得志
Owner SUZHOU FANGJIYUAN ENERGY SAVING TECH
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