Physics, 08.11.2019 20:31 cxttiemsp021
Two-stage refrigeration cycle: a two-stage compression refrigeration system with an adiabatic liquid-vapor separation unit uses refrigerant-134a as the working fluid. the system operates the evaporator at -40oc, the condenser at 800 kpa, and the separator at - 10.1oc. the system is to serve a 30-kw cooling load ( ql ). determine a) the mass flow rate through each of the two compressors, b) the power used by the compressors, and c) the system’s cop. the refrigerant is saturated liquid at the inlet of each expansion valve and saturated vapor at the inlet of each compressor, and the compressors are isentropic.
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Why does gravity have a lesser than grater effect on higher altitudes?
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Elements in group viiia (also known as group 18, or the noble gases) have similar properties because they all have a. the same number of electron shells b. full octets c. the same number of valence electrons d. the same number of electrons needed to fill their octet
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Two-stage refrigeration cycle: a two-stage compression refrigeration system with an adiabatic liqui...
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