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Medium-high-temperature heat pump set working medium

A high-temperature heat pump and working fluid technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve problems such as the destruction of the atmospheric ozone layer and the large impact of the greenhouse effect, and achieve high cycle energy efficiency, suitable thermal parameters, and cycle performance. excellent effect

Inactive Publication Date: 2007-06-13
河南绿源制冷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since both CFC-11 and CFC-114 belong to CFC substances, their ozone depletion potential ODP is 1.0 and 0.85 respectively, which have serious damage to the atmospheric ozone layer, and their greenhouse effect is also very large, and their greenhouse effect potential The value of GWP is 4600 and 9800 respectively, developed countries have banned it in 1996, and developing countries will also ban it in 2010

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Take 75% HCFC124, 5% HC600a, and 20% HFC245fa as the refrigerant after being physically mixed at room temperature.

Embodiment 2

[0018] Example 2: Take 70% HCFC124 and 30% HCFC22 as the refrigerant after being physically mixed at room temperature.

Embodiment 3

[0019] Example 3: Take 70% HCFC124 and 30% HFC134a and use them as a refrigerant after physical mixing at room temperature.

[0020] The design conditions are: the average evaporating temperature is 45°C, the average condensation temperature is 90°C, the suction superheating temperature is 5°C, the subcooling temperature is 2°C, the constant entropy efficiency of the compression process is 85%, the relevant parameters of the above embodiments And cycle performance indicators are shown in Table 2.

[0021] Table 2 Thermal performance of each group in the embodiment of the present invention

[0022] Parameters and performance

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Abstract

This invention relates to new type medium high temperature heat pump engine working medium, it is matched of various component in mass percentage such as HCFC124, HFC245fa, HC600a, HCFC22, HFC134a and so on, its component reach the requirement of the environmental protection, heat work function is fine, hindering burning commixture working medium, and may use the compression engine directly which adopts the mature technology and whose former working medium is HCFC22.

Description

Technical field [0001] The invention belongs to a refrigerant in a heat pump air conditioning system, and is particularly suitable as a working fluid in a medium and high temperature heat pump system with a condensation temperature of 70-120°C. Background technique [0002] In heating areas in my country, with the restrictions on coal-fired boilers and the continuous improvement of ambient air quality requirements, heat pump units have gradually received widespread attention. The use of heat pump heating technology not only has higher total energy than conventional energy supply methods. Utilization efficiency, reduce CO 2 Emissions (thus reducing the greenhouse effect) can also effectively use industrial waste heat, geothermal energy, solar energy, and low-grade thermal energy contained in the environment (air, soil, surface water or shallow groundwater) to reduce thermal pollution caused by waste heat emissions. In the past, the high-temperature working fluids commonly used as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 王乐轩张宪坤张凯张迎胜
Owner 河南绿源制冷有限公司
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