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Heat transfer medium special for solar heat pump and preparation method thereof

A solar heat pump and heat transfer medium technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve the negative impact of solar heat pump technology promotion, reduce the service life of solar heat pump units, and affect the comprehensive thermal efficiency of solar heat pumps. Good rust protection and descaling effect, good chemical stability, good cooling effect

Inactive Publication Date: 2010-07-28
康树人
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, different brands of antifreeze have different production formulas and freezing points, so they should not be mixed.
Mixing different brands of antifreeze fluids will react with each other to produce foam, which will seriously block the unit
The above problems not only directly affect the comprehensive thermal efficiency of solar heat pumps, but also greatly reduce the service life of solar heat pump units, and have a serious negative impact on the promotion of solar heat pump technology.

Method used

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Examples

Experimental program
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Embodiment Construction

[0006] Examples are given below to describe the embodiments of the present invention in detail.

[0007] Weigh out ethylene glycol C 2 h 6 o 2 38 kg, 58 kg of ionized water, triethanolamine C 6 h 15 o 3 N2 kg, sodium dihydrogen phosphate N a h 2 PO 4 h 20 0.6 kg, sodium benzoate C 7 h 5 N a o 2 0.5 kg, phosphoric acid H 3 PO 4 0.3 kg, benzotriazole C 6 h 5 N 3 0.3 kg, borax Na 2 B 4 o 7 ·H 20 0.25 kg, corrosion inhibitor C 2 h 807 P 2 0.02 kg, defoamer C 12 h 27 o 4 P 3 0.02 kg and 0.01 kg of color essence are reserved.

[0008] The medium preparation process is as follows: first mix 38 kg of ethylene glycol with 58 kg of ionized water, heat and stir the mixture, and when the temperature of the mixture reaches 60-70°C, add 2 kg of triethanolamine and 0.6 kg of sodium dihydrogen phosphate , 0.5 kg of sodium benzoate, 0.3 kg of phosphoric acid, 0.3 kg of benzotriazole, 0.25 kg of borax, 0.02 kg of corrosion inhibitor, 0.02 kg of defoamer and 0.01...

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Abstract

The invention discloses a heat transfer medium special for a solar heat pump and a preparation method thereof, which belong to renewable energy source utilization technology. The heat transfer medium is prepared by mixing, heating and stirring ethylene glycol, ionized water, triethanolamine, sodium dihydrogen phosphate, sodium benzoate, phosphoric acid, tolyltriazole styrene, borax, a defoaming agent, an inhibitor and a color concentrate in different weight ratios. The transfer medium has the characteristics of low freezing point, freeze prevention, high low-temperature flowing property, high boiling point, low evaporation loss, high specific heat, high heat conductivity, less foam, high anti-foam performance, and good anti-rust protection and descaling functions for metal pipelines.

Description

technical field [0001] The invention belongs to the field of renewable energy utilization, and mainly relates to a special heat transfer medium for solar heat pumps and a preparation method thereof. Background technique [0002] Solar heat pump is a new technology promoted by the country in recent years to develop "low-carbon economy" and advocate "energy saving and emission reduction". However, since the solar heat pump technology has not been used in the market for a long time, people still do not understand its technical performance. At present, in northern China, the heat transfer medium of solar heat pumps is mostly replaced by water. As we all know, cold water contains a large amount of alkaline substances. After being heated by the collector and compressed by the heat pump, scale will be formed, which will adhere to the metal surface of the unit, which will seriously affect the heating and cooling functions. Over time, the unit will be damaged. ; In northern regions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/10
Inventor 康树人康明华康宁康建平
Owner 康树人
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