A small house kept at 77 F inside loses 12 Btu/s to the outside ambient at 32
Question:
A small house kept at 77 F inside loses 12 Btu/s to the outside ambient at 32 F.A heat pump is used to help heat the house together with possible electric heat. The heat pump is driven by a 2.5-kW motor, and it has a COP that is one-fourth that of a Carnot heat pump unit. Find the actual COP for the heat pump and the amount of electric heat that must be used (if any) to maintain the house temperature.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 70% (17 reviews)
The coefficient of performance COP of a heat pump is given by COP Qc W where Qc is the heat absorbed ...View the full answer
Answered By
BillClinton Muguai
I have been a tutor for the past 5 years. I have experience working with students in a variety of subject areas, including computer science, math, science, English, and history. I have also worked with students of all ages, from elementary school to college. In addition to my tutoring experience, I have a degree in education from a top university. This has given me a strong foundation in child development and learning theories, which I use to inform my tutoring practices.
I am patient and adaptable, and I work to create a positive and supportive learning environment for my students. I believe that all students have the ability to succeed, and it is my job to help them find and develop their strengths. I am confident in my ability to tutor students and help them achieve their academic goals.
0.00
0 Reviews
10+ Question Solved
Related Book For
Fundamentals Of Thermodynamics
ISBN: 9781118131992
8th Edition
Authors: Claus Borgnakke, Richard E. Sonntag
Question Posted:
Students also viewed these Sciences questions
-
A Carnot heat pump is used to heat and maintain a residential building at 75F. An energy analysis of the house reveals that it loses heat at a rate of 2500 Btu/h per F temperature difference between...
-
A Carnot heat pump is used to heat and maintain a residential building at 75F. An energy analysis of the house reveals that it loses heat at a rate of 2500 Btu/h per F temperature difference between...
-
An ideal, or Carnot, heat pump is used to heat a house to a temperature of 294 K (21 C). How much work must the pump do to deliver 3350 J of the heat into the house on a day when the outdoor...
-
kindly interpret the R squared In order to test its job candidates' technical skills, a company creates a timed Excel test (in minutes) to be completed during the interview. The company asks its...
-
In Exercise 7, you examined U.S. household size in 2010. Using these data, construct a histogram to represent the distribution of household size. a. From the appearance of the histogram, would you...
-
A 30-kg uniform thin panel is placed in a truck with end A resting on a rough horizontal surface and end B supported by a smooth vertical surface. Knowing that the deceleration of the truck is 4...
-
Explain the difference between the nominal and real rate of interest on an investment.
-
(a) Blank Company sells three different categories of tools (small, medium and large).The cost and market value of its inventory of tools are as follows. Determine the value of the companys inventory...
-
The company has 15 employees, who earn a total of $1,950 in salaries each working day. They are paid each Monday for their work in the five-day workweek ending on the previous Friday. Assume that...
-
As audit partner for Grupo and Rijo, you are in charge of reviewing the classification of unusual items that have occurred during the current year. The following material items have come to your...
-
In a remote location, you run a heat engine to provide the power to run a refrigerator. The input to the heat engine is 1450 R and the low T is 700 R; it has an actual efficiency equal to half that...
-
Arctic explorers are unsure if they can use a 5-kW motor-driven heat pump to stay warm. It should keep their shelter at 60 F; the shelter loses energy at a rate of 0.3 Btu/s per degree difference...
-
An act of Congress in 2002 intended to bring reform to corporate accountability and stewardship in the wake of a number of major corporate scandals. True/False
-
1- What is the chairman of the Texas State Board of Education's primary occupation? 2- Why are the decisions the Texas State Board of Education make about their high school science standards so...
-
SECTION 7 KEEPING ENTIRE STRUCTURES IN EQUILIBRIUM ASSIGNMENT #2 1. Find the reactions at A and C. A 2. Find the reactions at A and C. 60.0 kN B 3.00 9.00 4.00 6.00 5.00 kN 3.00 B 1.00 2.00 10.0 kN...
-
The year-end financial statements of Python Tax Services are provided below. Service revenue Expenses: Salaries Utilities Insurance Supplies Net income PYTHORT TAX SERVICES Income Statement $ 68,500...
-
a. Calculate the volume of the solid of revolution created by rotating the curve y=2+4 exp(-5 x) about the x-axis, for x between 2 and 4. Volume: b. The equation of a circle of radius r, centered at...
-
The simply supported timber beam of Figure 1 is made-up by gluing together three 300 mm by 150 mm planks as shown. The beam has to carry a uniformly distributed vertically downward load of 8 kN/m for...
-
Write a method that displays an n-by-n matrix using the following header:public static void printMatrix(int n)Each element is 0 or 1, which is generated randomly. Write a test program that prompts...
-
9.Consider the reaction 3NO2(g)+H2O=2HNO3(aq)+NO(g) where Delta H=-137 kJ.How many kilojoules are released when 92.3g of NO2 reacts?
-
Calculate the RedlichKwong parameters of fluorine from the values of the critical constants and compare your results with the values for a and b in Table 7.4. Table 7.4 RedlichKwong van der Waals b...
-
Calculate the critical volume for ethane using the data for T c and P c in Table 7.2 (see Appendix B, Data Tables) assuming a.The ideal gas equation of state b. The van der Waals equation of state....
-
Show that T = 1 + T ( In z/T) P or a real gas where is the volumetric thermal expansion coefficient.
-
Kenneth lived in his home for the entire year except for when he rented his home (near a very nice ski resort) to a married couple for 14 days in December. The couple paid Kenneth $14,000 in rent for...
-
On December 31, 2021, Shack Store Inc had 143 million shares outstanding, which traded for $643.29 per share. On January 02, 2022, the CEO announced a 20-for-1 stock split. Every shareholder would...
-
o1s= secom o1s= secom
Study smarter with the SolutionInn App