Choose Suitable Refrigerants for Industrial Refrigeration Plants

Update:30 Oct 2017
Summary:

There is no absolute answer to the question. No refrige […]

There is no absolute answer to the question. No refrigerant meets 100% of all cooling equipment requirements. Ideal refrigerants require this in terms of material compatibility, chemical stability, performance, non-toxicity, incombustibility, boiling point and so on.

The refrigerant HFC R134A has perfect thermal stability, minimal toxicity, no corrosion and incombustibility. Although it is more common in automotive air conditioners, this refrigerant can also be used in commercial refrigeration systems, especially on larger coolers. The recent discovery of chemical substances around the world has led to global warming that has hindered its use.

Ammonia is a member of the so-called halogen-free chemicals, which may be one of the most common refrigerants in industrial cooling equipment and one of the oldest refrigeration plants. Its volume of heat absorption rate is unparalleled. This can only be used in smaller components - no large cooling equipment is required. Other attractive features include high critical points, high coefficient of performance and low molecular weight.

Carbon dioxide emissions are high because of their minimal environmental impact. Refrigerants are not flammable and non-toxic. However, despite these pleasant properties, the refrigerant needs to be carefully handled. First, the chemical substance is heavier, meaning that in the case of leakage, it will remove oxygen from the room. Combined with the fact that it is tasteless to form a very dangerous situation.

Water has been used as a refrigerant for decades and no longer stay. In addition to being readily available, the substance has impeccable chemical and thermodynamic properties. It can not be considered as the industrial refrigeration itself, but is cooled in the cooling device and introduced into the circuit to lower the temperature.