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Multicomponent mixture work medium suitable for fractional condensation type heat pump circulation system

A condensing type and working fluid technology, which is applied in the direction of heat exchange materials, fluid heaters, lighting and heating equipment, etc., can solve the problem of affecting the reliability of compressors, does not involve mixed working fluids, and has not found patent reports on mixed refrigerants And other issues

Inactive Publication Date: 2006-08-02
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A heat pump is a device that absorbs heat from a low-temperature heat source and releases heat to a high-temperature heat source. It can use a large amount of heat in natural resources and waste heat resources, and effectively reduce the input energy. Therefore, it is an efficient heating method and is widely used in heating. , hot water supply and industrial heating, but the main problem of the current heat pump unit is: in winter, the outdoor temperature is lower than 0 ℃, and its heating capacity drops greatly when the outdoor temperature is close to -5 ℃, and it is not suitable to operate at a temperature lower than -5 ℃ Working at ambient temperature; similarly, when the required preparation temperature is high (higher than 70°C, even above 100°C), the heating efficiency will drop greatly, and at the same time, the exhaust temperature of the compressor will increase. To the reliability of the compressor, the application of the heat pump unit is greatly restricted
The relevant patents that can be retrieved at present are Chinese patent 200410077681.8, but this patent only describes the circulation process of a self-cascading air source heat pump water heater system, and does not involve the mixed working fluid used in the system, nor does it It is found that this kind of heat pump cycle system is aimed at the relevant patent report of the mixed refrigerant in the above temperature range

Method used

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  • Multicomponent mixture work medium suitable for fractional condensation type heat pump circulation system
  • Multicomponent mixture work medium suitable for fractional condensation type heat pump circulation system
  • Multicomponent mixture work medium suitable for fractional condensation type heat pump circulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The ambient temperature is between -20°C and -10°C, and the condensing heat pump system produces heat in the temperature range of 60°C to 70°C. The cycle flow is as follows: figure 1 As shown, the mass concentration and performance of the mixed working fluid are shown in Table 1, where COP represents the heating efficiency of the system:

[0016] project

Embodiment 2

[0018] The ambient temperature is between -20°C and -10°C, and the condensing heat pump system produces heat in the temperature range of 70°C to 80°C. The cycle flow is as follows: figure 1 As shown, the mass concentration and performance of the mixed working fluid are shown in Table 2, where COP represents the heating efficiency of the system:

[0019] project

[0020] COP

Embodiment 3

[0022] The ambient temperature is between -10°C and 0°C, and the condensing heat pump system produces heat in the temperature range of 70°C to 80°C. The cycle flow is as follows: figure 1 As shown, the mass concentration and performance of the mixed working fluid are shown in Table 3, where COP represents the heating efficiency of the system:

[0023] project

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Abstract

The present invention discloses one kind of multicomponent mixture work medium suitable for fractional condensation type heat pump circulation system. The mixture work medium or mixed refrigeratant consists of two components, including one low boiling point component and one high boiling point component. The low boiling point component is one or several selected from difluro methane, trifluoro ethane, fluoro ethane, propylene, propane, pentafluoro ethane, etc. The high boiling point component is one or several selected from isobutane, n-butane, butene, isobutene, octafluoro isobutene, octafluoro cyclobutane, etc.

Description

technical field [0001] The invention belongs to the technical field of heat supply by heat pump, and mainly relates to multi-element mixed working medium applicable to a condensing type heat pump circulation system. Background technique [0002] A heat pump is a device that absorbs heat from a low-temperature heat source and releases heat to a high-temperature heat source. It can use a large amount of heat in natural resources and waste heat resources, and effectively reduce the input energy. Therefore, it is an efficient heating method and is widely used in heating. , hot water supply and industrial heating, but the main problem of the current heat pump unit is: in winter, the outdoor temperature is lower than 0 ℃, and its heating capacity drops greatly when the outdoor temperature is close to -5 ℃, and it is not suitable to operate at a temperature lower than -5 ℃ Working at ambient temperature; similarly, when the required preparation temperature...

Claims

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Application Information

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IPC IPC(8): C09K5/04F24H4/00
Inventor 任挪颖孙民晏刚
Owner XI AN JIAOTONG UNIV
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