This method of leak detection is simple and practical as it does not require expensive equipment, sometimes the use of antifreeze is required. c) ultrasonic detection b) ultraviolet light d) simple auditory inspection a) soap solution   Which of the following groups of refrigerants has the greatest impact on the ozone layer? b) HCFC d) HFC a) CFC c) HC

2. Given 80% RH, Specific volume 16.5 Cu-ft of air / lb of dry air. Calculate what is the wet bulb temperature, dry bulb temperature, dew point, absolute humidity, enthalpy

In the process of drying carrots using a parallel flow drying system, the material with a moisture content of 85% enters the drying system at a rate of 500 Kg / hour to produce dry carrots with a moisture content of 20%. If it is known that hot air used as the drying medium has a humidity ratio of 0.006 Kg of water per Kg of dry air and the flow of hot air enters the system at a rate of 200 Kg of air for each dry matter produced, calculate the ratio of humidity to air leaving the system assuming that the system is under steady state conditions.

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