Walk-in cooler requirements for refrigerants
walk-in cooler requirements for refrigerants walk-in cooler absorption refrigerants should have the following characteristics: ① has a strong ability to absorb refrigerant; ② at the same pressure, it boils The temperature is much higher than the boiling temperature of the refrigerant; ③ does not explode or burn, and is non-toxic to the human body; ④ is less corrosive to metal materials; ⑤ is cheap and easy to obtain. walk-in cooler The nature of the ammonia solution in the refrigerant The concentration of dissolved ammonia in water is expressed by mass fraction a, which is equal to the ratio of the mass of ammonia in the solution to the total mass of the solution. Water and ammonia can be completely miscible in any ratio, and can form all solutions with a equal to 0 to 1 at room temperature. At low temperatures, the concentration of the solution is limited by the precipitation of pure water ice, pure ammonia ice or ammonia hydrates NH3, H20 and 2NH3, Hzo. Ammonia is slightly ionized after being dissolved in water, so the ammonia solution is weakly alkaline. The corrosive effect of on non-ferrous metals Ammonia solution is similar to liquid ammonia in nature. It is colorless, has a pungent odor, and has a corrosive effect on non-ferrous metal materials (except phosphor bronze). Therefore, copper and copper alloy materials are not allowed in ammonia-water absorption refrigeration systems. density, specific heat capacity, thermal conductivity, viscosity and surface tension. The density of pure ammonia solution at 0℃ is 0.64kg/l. For ammonia solution, its density changes with temperature and ammonia mass fraction. The above articles are from refrigerated showcase commercial refrigeration and walk-in cooler. For details, please log in: www.ihdjx.com Free order hotline: +86 18019567573 Contact person: Mr. Shao 26066250@qq.com
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