Please answer the following question(s): 1. (a) What is the best coefficient of performance for a refrigerator that cools an environment at -28° C and has heat transfer to another environment at 47 ° C? COP ref (b) How much work must be done for a heat transfer of 4186 kJ from the cold environment? W = kj (c) What is the cost of doing this if the work costs 10.0 cents per 3.6×106 J (a kilowatt-hour)? Cost in cents = V (d) How many kJ of heat transfer, Qh occurs into the warm environment? Qh= kj Think about what type of refrigerator might operate between these temperatures. Hint: Use the appropriate formula for a refrigerator which is different from a heat pump.

Please answer the following question(s): 1. (a) What is the best coefficient of performance for a refrigerator that cools an environment at -28° C and has heat transfer to another environment at 47 ° C? COP ref (b) How much work must be done for a heat transfer of 4186 kJ from the cold environment? W = kj (c) What is the cost of doing this if the work costs 10.0 cents per 3.6×106 J (a kilowatt-hour)? Cost in cents = V (d) How many kJ of heat transfer, Qh occurs into the warm environment? Qh= kj Think about what type of refrigerator might operate between these temperatures. Hint: Use the appropriate formula for a refrigerator which is different from a heat pump.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A refrigerator takes in 20 J of work and exhausts 50 J of heat. What is the refrigerator’s coefficient of performance?
Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 65 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 750 kcal have been burned at the end of the workout, what efficiency is the machine using in obtaining this result? %If your actual efficiency is 0.19, how many kcal did you really burn? kcal
When 2.1 kg of water at 12.3 °C is mixed with 3.7 kg of water at 39.7 °C in a well-insulated container, what is the change in entropy of the system? Part A Make an estimate. Express your answer to two significant figures and include the appropriate units. HÁ ? AS = Value Units Submit Request Answer Part B Use the integral AS = [dQ/T. Express your answer to two significant figures and include the appropriate units. HA AS = Value Units Submit Request Answer
What is the net work Wnet,s = ΣWs done by the gas in this process and What is the heat QH taken from the hot reservoir? Please answer both, its my last question remaining!
Suppose a heat engine design makes a square on a PV diagram, using a monatomic gas. The high pressure is 3P and low pressure is P. The high volume is 3V and low volume is V. What is the efficiency of the heat engine?