I have a situation that I cannot explain so I need the assistance of someone with a good understanding of thermodynamics. I have 36 AC to DC power supplies located in an equipment rack. These power supplies are failing after some time. The failures appear to be moisture related. We put moisture

Match the following A. Cooling and dehumidification 1. dBT increases but dPT decreases B. Chemical dehumidification 2. dPT increases and dBT remains unchanged

When atmospheric air is heated at constant pressure, its A. Humidity ratio does not change B. Relative humidity increases C. Dew point temperature does not change D. Wet bulb temperature increases The correct option is D. Wet bulb temperature of the moist air increases.

As per United Nations Environment Programme (UNEP) Montreal Protocol, it has been planned that the production of HCFCs will be totally phased out by the year 2030. Which refrigerants are considered next-generation refrigerants? The Hydrofluoro-Olefin(HFO) refrigerants are considered as next (four

Everyone is familiar with the Carnot cycle for both heat engines and heat pumps. In an effort to simplyfy developing working systems based on the Stirling engine/pump, I developed the concept of thermal torque. Paralleling the simple concept of a mechanical lever, one can more quickly determine th

In a standard vapor compression refrigeration cycle, operating between an evaporator temperature of -10 C and a condenser temperature of 40 C, the enthalpy of the refrigerant, R12 (Freon 12) at the end of compression is 220 kJ/Kg. Show the cycle diagram on T-s plane. Calculate, A. The COP of the cyc

R717 (ammonia) system operates on the basic vapor compression refrigeration cycle. The evaporator and the condenser pressures are 0.119 MPa and 1.389 MPa respectively. The mass flow rate of refrigerant is 0.1 kg/s. If the volumetric efficiency of the compressor is 84%, determine the compressor displ

Ans: No. R134A is an HFC(hydrofluorocarbon)-based refrigerant. It is also known as HFC-134A.

In a vapor compression refrigeration system, liquid to the suction heat exchanger is used to _____ A. Keep the COP constant B. Prevent the liquid refrigerant from entering the compressor C. Subcool the liquid refrigerant leaving the condenser D. Subcool the vapor refrigerant from the evaporator An

A. Liquid to suction heat exchanger B. Constant volume heat addition C. Normal shock D. Ammonia water 1. Vapor absorption refrigeration 2. Vapor compression refri

Hello everyone, I have a question about calculating Relative humidity. If I have a surrounding with 30 degrees Celsius and RH of 30%. I am cooling the surrounding with an air conditioner that works at 15 degrees Celcius. At the end of the process, the room reaches 25 degrees Celcius. In this situati

Here I am mentioning some of the most commonly used refrigerants and their cylinder color codes: R134A - Light Blue R402A - Light Brown R407C - Chocolate R717 - Silver ----------------------------------------------------------------------------------------------------------------- Some phased-

Hi, how do I attempt to answer this: At the commencement of compression in the reciprocating compressor of a refrigeration plant the refrigerant is dry saturated at 1 bar. The compression process follows the law pV^1.1 = C, until the pressure is 10 bar. •Calculate the work done on the refrigera