Answer & Solution Discuss in Board Save for Later. How should gauge set hoses be sized for use in evacuating a system? a) 20% b) 15% c) 10%. Free. This may require filter changes daily/weekly/monthly until the moisture levels are below the point at which oil breakdown can occur e.g. D. Expansion valve. This moisture meter uses approximately 400–450 g of sample. Term. What factors affect the speed of an evacuation? Generally, the first property considered is miscibility (lubricant with liquid refrigerant). Fig. This is very useful to know the working principle of refrigerant in the Air Conditioning Application. REFRIGERANT PROPERTIES Refrigerants can be characterized by a number of properties. In this paper, we shall study about the different refrigerants used in various refrigeration systems. REFRIGERANTS: The working agent in a refrigerating system that absorbs or releases heat from the place to be cooled or refrigerated can be termed as a refrigerant. Refrigerants are the working fluids for refrigeration and air conditioning systems. Ans: d 31. b. Refrigeration in aeroplanes usually employs the following refrigerant (a) Co2 (b) Freon-11 (c) Freon-22 (d) Air (e) none of the above. (e) heat transfer. Ans: d. 31. of a refrigerator working as a heat pump is given by . P = (C.O.P.) 65. A Compressor . Thanks for sharing the informative post. B. Sulphur dioxide. < 75ppm There are 3 types of drier . are just as the name states, loosely filled with molecular sieve material which is held in the The second tube is used as a tare. Increase in refrigerant charge increases the quantity of refrigerant in the system, which increased the cooling capacity and also the COP of the system (Eq.). Humidity depends on water vaporization and condensation, which, in turn, mainly depends on temperature. The official moisture meter for testing soybeans is the GAC 2100 as of August 1, 1998 (DICKEY-john Corp, Auburn, IL). What does the presence of bubbles indicate? Use the shortest length and the largest diameter possible for the quickest evacuation. C. Lithium bromide. Desiccant or refrigerant? These properties are pressure, temperature, volume, density, enthalpy, flammability, ability to mix with oil, moisture reaction, odor, toxicity, leakage tendency, and leakage detection. Pump size, hose length, hose diameter, size of system to be evacuated, ambient temperature, suction line size, and the amount of moisture in the system. Refrigerants differ widi respect of the amount of moisture in the soil, they can hold in solution and die effects, which absorbed moisture on system components. (e) heat transfer . (e) heat transfer. In terms of comfort and health, the ideal relative humidity is 40 to 50 percent. Ans: d; Refrigeration in aeroplanes usually employs the following refrigerant (a) Co2 (b) Freon-11 (c) Freon-22 (d) Air (e) none of the above. 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