Common cold media have?

cold media, also known as refrigerant, is used to transfer heat energy in the air conditioning and other systems, a working fluid freezing effect. Every time when it comes to cold media, most people think of first is air conditioning. Indeed, in the context of daily life, almost every household air conditioning installation, application frequency is quite high. However, today we are going to talk about, not air conditioning, but with air can heat pump air conditioning with similar principle.

is mainly used for refrigeration and air conditioning, air can heat pump is mainly used for heating. Heating principle of the heat pump is the inverse of air conditioning refrigeration principle, through the refrigerant absorbs heat from the air. Therefore, said refrigerant in the air can play a key role in heating. Common refrigerant and air can have what kind of? Today will meet together with everybody, into the cold media:

1, R22 refrigerant

(refrigerant R22 is single In the cold) , scientific name called methylene fluoride a chlorine, the boiling point is about - 41℃。 The refrigerant colorless, odorless, is widely used in air conditioning system, especially in the fission air conditioning and air conditioning system, can say is everywhere. However, it has a big shortage, is that it is a member of the family of freon, into the air, the possible damage to the ozone layer, causing environmental problems.

2, R410A refrigerant

r410a refrigerant is scientists in order to in view of the increasingly deteriorating environment and developed a kind of environmental protection refrigerants. It goes with everything, colorless, volatile, flammable. R32 and R125 refrigerant is contained in composition, the boiling point about - 51 ℃ or so and do not contain chlorine ion, also won't destroy the ozone layer, water soluble and R22 matched, but the capacity is increased significantly. Now also can air industry common new environmental protection refrigerant.

3, R134A has a refrigerant

the composition of refrigerant R134A has a composition is different with other refrigerants, it does not contain chlorine ion, have no toxicity, also not flammable in air, will not damage to the ozone layer. Seems to be very good, but its boiling point is low, only. . . 26. 5 ℃, this means that, if it is used in the heat pump, once the environment temperature is reduced, so the amount of refrigerant in the gasification will be greatly reduced, resulting in a decline in heat pump heating efficiency. Therefore, this kind of refrigerant R22 than widely, commonly used in indoor type or high temperature heat pump.

4, R290 refrigerant

R29 refrigerant is another kind of new environmental protection refrigerant, colorless, slightly soluble in water, does not contain ozone. If mixed with air and has a certain probability bums, if there are any open flame, it is easy to cause accident. Now, in the industry use of high purity as refrigerant R290 as heat medium.

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