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leonida

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Hi guys, I have difficulties understanding the what I need to do in this problem. I have a ideal refrigeration cycle. first part is standard calculations, work of compressor and such. Results are Temperature range between -23 and 60 degrees C. Second part is the one that i do not understand. it says: "Assume an expanded control volume where cooling space is at 0 degrees C and the heat rejection space is at 20 degrees C and with the dead state of 20 deg C and 100 kPa. Do a second law analysis of the system." What am i supposed to do here? Is this a cycle in a cycle that runs between o and 20 deg C? or is it a simple ideal reverse Carnot that fits inside the dome? or something else...thanks

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