1: 0.4 MP to 0. 1mp. According to the temperature of the tank, the pressure of 404 refrigerant is related to the ambient temperature and the temperature inside the tank. The lower the temperature in the tank, the lower the low pressure, and it is normal to keep it between 28 and 40. That depends on what kind of cooler it is. The pressure adjustment of imported multifunctional regulating valve depends on the temperature demand adjustment.

2: 404a refrigerated freezer

Temperature in the cabinet

5℃ 3℃

; According to evaporation temperature-6℃; The condensation temperature is 46℃

3: Low pressure 390 kPa (3.9 bar); High pressure 2009 kPa (20.09 bar)

404a freezer

Temperature in the cabinet

-20℃ 3℃

According to the evaporation temperature-30℃; The condensation temperature is 46℃.

4: Low pressure 102 kPa (10.02 bar); High pressure 2009 kPa (20.09 bar).

Extended data:

Physical and chemical characteristics of R-404A refrigerant: R404A is a chlorine-free non-boiling mixed refrigerant, colorless gas at normal temperature and pressure, and compressed liquefied gas when stored in steel cylinders. that

Oil Diffusion Pump (abbreviation for oil diffusion pump)

for

Therefore, R404A is an environmentally friendly refrigerant that does not destroy the atmospheric ozone layer. Main application: R404A

Mainly used for substitution

R22

and

R502

It is clean, low toxic, non-flammable and has good refrigeration effect, and is widely used in medium and low temperature refrigeration systems.

Baidu encyclopedia -R404A refrigerant