What is the value of C.O.P. of low-temperature cascade system in terms of intermediate temperature in the following diagram? If TEL and TCL = Evaporator and condenser temperatures for low-temperature cascade system TEH and TCH = Evaporator and condenser temperatures for high-temperature cascade system
What is the value of C.O.P. of low-temperature cascade system in terms of intermediate temperature in the following diagram? If TEL and TCL = Evaporator and condenser temperatures for low-temperature cascade system TEH and TCH = Evaporator and condenser temperatures for high-temperature cascade system Correct Answer TEL / TI – TCL
Temperature of the condenser is higher than the temperature of the evaporator. The desired effect is obtained in the evaporator. So, by using the Carnot’s theorem to low-temperature cascade system, C.O.P. = Temperature of the evaporator / Temperature of the condenser – Temperature of the evaporator = TEL / TCL – TEL As, when low-temperature cascade condenser temperature is equal to high-temperature cascade evaporator temperature. TCL = TEH = TI Hence, C.O.P. = TEL / TI – TCL.
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Feb 20, 2025