Also known as refrigerant, agent to snow, snow, is the medium of various kinds of heat engine so as to complete the energy conversion material.
These substances are usually reversible phase transformation (
Such as gas -
To increase power.
Such as the steam in the engine, kinds of refrigerants in the snow, and so on.
General of the steam engine at work, will steam heat energy released, is converted into mechanical energy to generate driving force;
While the snow kind of refrigerant used to low temperature of the heat transmission to the high temperature.
1, the pros and cons of refrigerant quality affects the operation of the whole machine, will also have great harm on the refrigeration system.
2, then we should be how to identify the authenticity of a refrigerant?
Starting from the R22
refrigerant R22 CHCLF2 is a kind of pure, its at least more than 99% purity.
But currently on the market of fake R22, it contains a the methane of cl, and other corrosive substances, and has higher percentage.
A the methane of cl has a strong corrosive, will cause serious corrosion of refrigeration unit compressor, resulting in compressor scrap.
Will be inferior refrigerant hit bubble, bubble slowly begin to corrode, dissolve;
The authenticity of R22 refrigerant will not appear this kind of phenomenon.
For other refrigerants, we can adopt the following method to simply: method of a refrigerant tank inversion, and release a small amount of refrigerant to a piece of white paper;
If there is obvious on the white paper impurities or liquid water, poor quality of refrigerant, suggest not to use.
Method 2 connect pressure gauge test refrigerant cylinder, control the refrigerant temperature and pressure characteristics, check whether the pressure in the bottle in the normal range;
If pressure apparently unusual, is not recommended.
Method 3 in the refrigerant used in the middle, pressure inside the bottle test again.
For refrigerant R22 this single component, two measuring bottle pressure value should be close.
If the refrigerant is inferior refrigerants, often mixed with a variety of ingredients, refrigerant in bottle after use due to the change of the composition proportion, usually there will be a bigger difference, the pressure in the bottle if encounter this kind of phenomenon, suggest to stop the use of the refrigerant, and should be timely to the refrigerant emptying has been injected into the system, to avoid damage to the system.
Methods four runs in system debugging phase, if it is found that the following anomalies, suggests purity tests on refrigerant in the system, whether the discharge refrigerant in the system for poor quality.
System refrigeration capacity obviously insufficient and through inspection, found no other exceptions need to focus on the condition of the refrigerant;
System dryer, filter or expansion valve block, and the blockage is tan wax-like or black sludge need to focus on refrigerant when foreign body;
Appeared in the process of system running high, low pressure or temperature anomaly, or stop state, abnormal pressure system balance, need to check the refrigerant.
For normal operation of the unit, to safeguard system, refused to use inferior refrigerants.
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