An air conditioner has a COP of 2.75. What is the power rating of the unit if it is to remove 1.00 x 107 J of heat from a house interior in 20 min?
Answer to relevant QuestionsA heat pump removes 2.2 x 103 J of heat from the outdoors and delivers 1.3 x 103J of heat to the inside of a house each cycle. (a) How much work is required per cycle? (b) What is the COP of this pump? A Carnot engine has an efficiency of 30% and takes in heat from a high-temperature reservoir at 178 oC. What is the Celsius temperature of the engine’s low-temperature reservoir? A Carnot engine takes 2.7 x 104J of heat per cycle from a high-temperature reservoir at 320 oC and exhausts some of it to a low-temperature reservoir at 120 oC. How much net work is done by the engine per cycle? A Carnot engine operating between reservoirs at 27oC and 227oC does 1500 J of work in each cycle. (a) The change in entropy for the engine for each cycle is (1) negative, (2) zero, (3) positive. Why? (b) What is the heat ...An ideal gas is under an initial pressure of 2.45 x 104 Pa and occupies a volume of 0.20 m3. The slow addition of 8.4 x 103 J of heat to this gas causes it to expand isobarically to a volume of 0.40 m3. (a) How much work is ...
Post your question