Refrigerant R404A/cold media characteristics and use the _

Also known as refrigerant, refrigerant which belongs to HFC refrigerant r404a type non azeotropic environmental protection refrigerants, widely used in new refrigeration equipment to add in the process of die erste installation and maintenance. Today to explain the characteristics and application of refrigerant R404A.

1, R404A refrigerant is currently on the market in use is more of a refrigerant in low temperature. It is a kind of mixed refrigerant, is mainly composed of R125, everything, R143A combination according to proportion.

2, R404AA refrigerants used in cold storage, food refrigeration equipment, Marine refrigeration equipment, industrial refrigeration equipment, commercial low temperature refrigeration and transport refrigeration equipment such as cold chain and car supermarket display cabinets, etc.

3, in the use of specific instances used to replace R22 refrigerant and refrigerant R404A r114 refrigerant;

4, also known as refrigerant R404A HFC - 404 a, it belongs to a kind of typical mixed refrigerant;

5, the molecular weight of refrigerant R404A for 97. 6; Its molecular weight is 97. 6g/mol; The critical density is 72 ℃, then the critical pressure is 3. 7MPa;

6, the critical density of refrigerant R404A is 0. 4842g/cm? , in 101. The boiling point is - 3 kpa 46. 1℃; The CAS number is 354 - 33 - 6/811 - 97 - 2/420 - 46 - 2, the liquid density is 1. 045g/cm? ;

7, the boiling point of evaporation of refrigerant R404A potential KJ/Kg is 200:1; The specific heat of 1. 54.

8, refrigerant R404A ozone-depleting potential means the ODP is zero. Global warming coefficient value namely GWP is 3850; At 30 ℃, and 101. 3 kpa under the condition of the constant pressure steam heat to 0. 21.

the domestic refrigeration industry the most widely used refrigerants is still as refrigerant R22,

but due to the damage to the ozone layer and the higher the greenhouse effect, according to relevant international agreed in China in 2030 years ago to eliminate their use. As a result, more and more refrigeration refrigeration equipment are using R22 alternative R404A.

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