Question

Q1. You want to keep the indoor temperature of an office at 25o C. The outdoor temperature is 5o C. The heat transfer through the building’s exterior is 3 x 106 kJ. To achieve the desired indoor temperature, you are exploring three heat pumps operating between the office interior and: (i) the ground at 12o C; (ii) a pond at 10o C; and (iii) the air outside at 5o C. For each case, what is the minimum theoretical net work input (in kJ) any heat pump would require?

Answer 1