The theory of refrigerant in the future a long way to go

theory of refrigerant in the future a long way to go

the global climate warming, to protect the ozone layer, our country in 1991 to join the to expend the ozone layer material of the Montreal protocol amendment, London in 2003 to join the for ozone layer material of Montreal protocol Copenhagen amendment. Press 'to take the ozone layer material of the Montreal protocol Copenhagen amendment request HCFCs in China is a class need to stop using in 2040. Relevant state part made a detailed implementation plan, such as R22 in 2013 as the consumption and production level of frozen, 2015 decreased by 10%, reduce 35% in 2020, 67 in 2025. 2, 5% in 2030, a thorough screening but kept. 5% of the amount of maintenance.

as refrigeration professional production manufacturers, as screening is the inevitable trend of the future and what refrigerant can pick, pick what refrigerant of request?

R22 was once the world's most widely used of fluorocarbon refrigerants, until now, no single medium can replace R22 directly. Now global professional barons introduced some alternatives to R22 substitute goods, including environmental hydrogen fluoride generation hydrocarbon ( HFC) Refrigerant - — Everything, r410a and R407C.

select refrigerants needs many factors to think, because choose any kind of refrigerant machine will all the workings of the air conditioning system, reliability, capital and market tolerance must influence. Ambition of refrigerants, except to specific thermal characteristics, a kind of ambition of refrigerant should be nontoxic, nonflammable, and completely in the system. It should be environmental protection, zero ODP value, low GWP value, short detection and processing, without extreme pressure, regardless of the high pressure and low pressure. To choose fit ambition all features of the refrigerants, bosses introduce hasn't completely fit, then we will be discussed briefly to introduce the function of commodity characteristics.

R134a has a small capacity than that of R22, the pressure is lower than R22. Due to these characteristics, use the same to everything as volume of air conditioning, air conditioning and other equipment demand a greater volume of the displacement type compressor, evaporator, condenser and cooling pipe. Eventually set up production and operation is led by a system of everything, R22 as cold and everything system will spend more than that of R22 system, higher capital requirements. R407C volume and pressure and R22 contrast. So just a brief adjustment design of R22 system can make the original system is suitable for R407C system. However, the system can effect comparing is the original system will be reduced by about 5%. This is due to the relative to other refrigerants, R407C can have up to 6 degrees of temperature drift. Thus R407C system under the condition of same standard condenser and evaporator will reduce the heat transfer, influence system can effect comparing. Volume and pressure is higher than that of R22, R410A is working pressure is higher than 50% 60%. High gas density is able to use smaller displacement displacement compression can also use the smaller the diameter of the pipe and valve, but high pressure to make the parts of the system has a higher request. Large volume of system more not share.

HFC refrigerants in spite of the ODP value is zero, but there are two conditions restrict its vision, a capacity is small, the second is mixed working medium temperature drift or pressure senior badness, and throughout the GWP value is appropriate. Like everything ODP value is zero, GWP value is 1430, R410A ODP value is zero, GWP value is 2000.

although the international legal documents of GWP is not restrictive. Two countries reduces in the beginning with high global warming potential hydrofluorocarbons aspects to strengthen bilateral cooperation, 'the more specific data is' the scheme in 2025 solid 26% based on 2005 - now 28% of the whole economic scale reduction targets and will do our best to 28%. Plan in China around 2030 carbon dioxide emissions peak and will do our best to reach peak in advance. '

it is series of HFC refrigerant is doomed to be a temporary substitute, choose the suitable low GWP value refrigerant a long way to go.

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