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What are the classification of refrigerants are generally?

by:Arkool     2020-03-15
< p> according to the refrigerant temperature condensed in the condenser when the saturation pressure Pk and normal evaporation temperature T0, generally divided into three categories: < / p> 1. High temperature low pressure refrigerant < p> condensing pressure Pk 2 ~ 3 or less ㎏ / ㎝ ( Absolute) T0> 0 ℃ < / p> < p> if the R11 ( CFCl3) The T0 = 23. 7℃。 This kind of refrigerant applies to air conditioning system of centrifugal compressor. Usually at 30 ℃, Pk 3 or less. 06 ㎏/㎝。 < / p> 2。 Medium pressure medium temperature refrigerant < p> condensing pressure Pk< 20 ㎏/㎝( Absolute) ,0℃比; T0> - - - - - - 60℃。 < / p> < p> like R717, R12, R22, etc, this kind of refrigerant is commonly used in ordinary single-stage compression and two-stage compression piston type refrigeration compressor. < / p> 3。 High pressure low temperature refrigerant < p> condensing pressure Pk ㎏ / ㎝ (20 or more Absolute) T0≤-70℃。 < / p> < p> like R13 ( CF3Cl) 、R14 ( CF4) , carbon dioxide, ethane, ethylene, and so on, this kind of refrigerant is suitable for low temperature part or complex overlapping refrigeration equipment - below 70 ℃ low temperature device. < / p> fluorite - — Refrigerant industry chain will usher in reverse. Industry in the bottom of the boom, had earlier after six years of wandering, product prices are at the bottom of the region. Since the fourth quarter of 2016 fluorite powder inventory low, combined with the supply ability is limited, lead to hydrofluoric acid in an emergency in business inventories, plant production load down, plus there is important before the Spring Festival enterprise production accidents in hydrofluoric acid and rapidly rising prices, and downstream of the refrigerant and polymer rapidly conduction. The fluorine chemical industry downstream refrigerants and polymer is extremely low, inventory and production enterprises signed a long list, the tight supply and demand in the short term is difficult to improve, formed the boom. We believe that the price will continue for a relatively long period, industry reversal began. Environmental protection new normal and refrigerant upgrade a tighter balance promoting mineral resources. From an environmental point of view: in the third batch of environmental protection verification involves 15 provinces and industry will face a new normal environmental protection, the upstream mineral will face challenges. Fluorite ore enterprise pollution, combined with the ore irrefragable, policy and environmental pressure capacity significantly shrink, lead to the supply of fluorite since the fourth quarter of 2016 obvious trend of tighter. We expect the upstream fluorite ore and fluorite powder ( The raw material of hydrogen fluoride) A tightening supply situation will continue. From the perspective of refrigerant upgrade: fluorine element of total demand is rising. In developing countries from the second generation to the three generations of comprehensive promotion in the process of refrigerant in the quality of the fluoride ratio significantly increase demand for fluoride increases obviously. And at the request of the Montreal protocol, overseas to phase out the second and third generation of fluoride refrigerants, overseas suppliers to gradually withdraw from the market, form a complete set of fluoride rubber material and raw material supply, air-conditioning maintenance market can only increase procurement from China, the demand for fluoride is rapidly increasing. Therefore, ore resource balance gradually tightened. Supply side reforms to promote refrigerant industry supply and demand fundamentals to improve. Although R22 as refrigerant in the long run will gradually withdraw from the historical stage, but the total demand will still be with downstream products market share growth and steady growth. At present our country of the production and sale of R22 strictly implement quota management, in accordance with the requirements for environmental protection, in 2017 China's production of R22 will control within 520000 tons. If, considering some out of the device, and has been effective capacity of R22 in China is about 570000 tons, industry capacity utilization is more than 90%. < p> < / p>
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