Find the flux of entropy at all three surfaces

Reference no: EM131233274

1. A heat pump with COP = 4 uses 1 kW of power input to heat a 25?C room, drawing energy from the outside at 15?C. Assume the high/low temperatures in the heat pump are 45?C/0?C. Find the total rates of entropy into and out of the heat pump, the rate from the outside at 15?C, and the rate to the room at 25?C.

2. A window receives 500 W of heat transfer at the inside surface of 20?C and transmits the 500 W from its outside surface at 2?C, continuing to ambient air at -5?C. Find the flux of entropy at all three surfaces and the window's rate of entropy generation.

Reference no: EM131233274

Questions Cloud

What is the average time in minutes spent in the system : Students arrive at the CSUS Financial Aid Office at a rate of 14 per hour and can be processed at a rate of 17 per hour. What is the utilization this office? What is the average wait time in minutes? What is the average time in minutes spent in the s..

What are the fluxes of entropy into : A heat pump (see Problem 5.49) should upgrade 5 MW of heat at 85?C to heat delivered at 150?C. For a reversible heat pump, what are the fluxes of entropy into and out of the heat pump?

Worker adjustment and retraining notification act : According to the Worker Adjustment and Retraining Notification (WARN) Act, _____. In the context of discrimination in employee selection procedures, which of the following is true of the four-fifths rule? In the context of discrimination in employee ..

What are the fluxes of entropy into and out of the heat pump : A radiant heating lamp powered by electricity has a surface temperature of 1000 K emitting 500 W. The radiation is absorbed by surfaces at the ambient temperature of 18?C. Find the total entropy generation and specify where it is made, including h..

Find the flux of entropy at all three surfaces : A window receives 500 W of heat transfer at the inside surface of 20?C and transmits the 500 W from its outside surface at 2?C, continuing to ambient air at -5?C. Find the flux of entropy at all three surfaces and the window's rate of entropy gene..

What did you find to be most interesting and important point : What did you find to be the most interesting and important point from the materials? Why is it important for the class to understand it in the context of economic geography?

Discuss the various geological events : Describe the main movement within the plate tectonics theory that shaped the form and composition of your selected region. Include regional features such as mountains, rivers, lakes, oceans, and deserts.

Write a one paragraph summary : Write a one paragraph summary.- Given the document topic is Plagiarism.- What is plagiarism?- What about "common knowledge"?

Find the rate of entropy generation inside the engine block : Find the rate of entropy generation inside the engine block, inside the coolant, and in the radiator/air combination.

User Account

All Pages