The freezer price - How to select the freezer important materials ( 2)

< p > freezers - price How to select the freezer important materials ( 2) Analyzes the refrigerant in the commercial freezer section on how to choose, and why do you choose. Here is to continue to share this knowledge, R600a refrigerant compressor. C4HlO R600a isobutane, formula is, the molecular weight of 58, boiling point - 11. 5 ℃, the ODP = 0, GWP≈ Materials of 0, better environmental performance: easy, there are oil refining industry can production, low prices, But now we still have not form large-scale production, need to import bill) ; The still can use R12 system of mineral oil, lubricating oil system material no special requirement, do not react with water, no corrosion metal: low operating pressure, low noise, energy consumption can be reduced 5% Flow by more than 70%, 10%, but to increase the cooling performance is good, high latent heat of evaporation, compressor can effect comparing can be as high as 1. 4 above, has obvious energy saving effect: single commercial freezer filling quantity is little, the general content can be: two lighter production control is better than everything, like R12 system, vacuum system for maintenance without much difficulty. price deficiency is the flammable and explosive, used in the large capacity of air-conditioner filling amount is larger, if leakage occurs, may cause explosion danger ( Blast volume concentration of 1. 8% - 8. 4%) 。 So generally USES fixed in the frozen evaporator outside form of rigid polyurethane foam plastics, and electrical components adopt explosion proof type air-conditioner, best placed on the outside of the freezer. Fixed in the evaporator frozen indoors, and frost, timing, temperature control and other electrical components between cold type of air-conditioner safety is difficult to guarantee. Therefore, so far, R600a only for ZhiLengShi freezers. Cooling tube in the presence of R600a road, can not use gas welding and welding, can only use lock ring connection mode, in short, in the process of production and maintenance of more strict with the safety and security system introduced in the fourth times larger investments, thus increasing the freezers costs and maintenance costs, as a large POCP value ( Belong to VOC) , and thus affect the popularization and promotion. From isobutane detached of isobutane of air-conditioner compressor, in thousands of lubricating oil or unused lock ring joint seal of all the compressor before sealing, must not be allowed to transport vehicle. Above all, isobutane compressor has the following characteristics: (1) : the higher energy efficiency ratio (2) due to the superior performance, has a good reliability, (3) low noise: (4) in the case of motor unchanged, in order to achieve the same refrigerating capacity, R600a compressor cylinder volume than R12 compressor increases more than 70% : 5) all R600a compressor must use PTC, reduce the risk of burning explosion. These are two different types of air-conditioner refrigerant, the difference between a lot of different use of air-conditioner, and according to the different refrigerants, and the characteristics of it. < br / > < br / > < / p >
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