Cold storage needed what are the requirements of refrigerants for thermodynamic aspects

small make up today is to introduce the contents of the refrigerator need refrigerant in thermodynamic requirements have? Want to know friends following the introduction of small make up have a look at the following article.

1, the lower boiling point, low evaporation temperature can be obtained. At the same time, the low boiling point of the refrigerant has higher vapor pressure.

2, higher critical temperature and setting temperature. Higher critical temperature and setting temperature is lower, in order to make sure the refrigerant in a wider temperature range of security.

3, refrigerant must have appropriate working pressure and requirement of refrigerants evaporating pressure is close to or slightly higher than the atmospheric pressure, avoid the refrigeration system of low pressure area increases with a vacuum air mixed system. Too much pressure on condensation. Low condensing pressure can reduce the intensity of refrigeration equipment, pipeline and construction requirements, reduce construction investment of cooling system and refrigerant leak outward to sex. Pressure on the condensing pressure and evaporation pressure ratio and pressure difference is small.

4, latent heat of vaporization of refrigerants, refrigeration system in the same refrigerating effect, the latent heat of vaporization large can reduce the amount of refrigerant cycle. It can also reduce the refrigerating machine, the equipment investment, lower energy consumption, improve the refrigeration efficiency.

5, for a large refrigeration system, the unit volume of refrigerant required refrigerating capacity as large as possible. When the refrigerating effect must be so, can decrease the amount of refrigerant cycle, reduce the size of the refrigerating machine and the pipe diameter.

6, smaller refrigerant adiabatic exponent, which can make the compression work to reduce consumption, reduce exhaust temperature, improve performance and simplify the system design.

7, for centrifugal compressor, refrigerant should adopt relative molecular mass is moderate. Most of the material under the boiling vaporization, the molar bean similar increases. So the similar to the boiling point of refrigerants, high relative molecular mass, the latent heat of vaporization is small.

8, coefficient of thermal conductivity, which can improve the heat transfer coefficient of heat exchange equipment, reduce the heat transfer area of the heat exchange equipment.

more information about refrigerator refrigerants in thermodynamic requirements needed for over here, hope to be able to bring you some help, if you have a demand on refrigerant, welcome consultation discussion with us, we wholeheartedly at your service.

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