To make ice, a freezer that is a reverse Carnot engine extracts 42 kJ as heat at

Question:

To make ice, a freezer that is a reverse Carnot engine extracts 42 kJ as heat at – 15oC during each cycle, with coefficient of performance 5.7. The room temperature is 30.3oC. How much

(a) Energy per cycle is delivered as heat to the room and

(b) Work per cycle is required to run the freezer?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

See More Books

Question Posted: Jan 19, 2011 06:47 AM

See More Questions

Carnot heat engine receives 650 kJ of heat from a source of unknown temperature and rejects 250 kJ of it to a sink at 24C. Determine (a) The temperature of the source and (b) The thermal efficiency...
A Carnot device extracts 5.00 kJ of heat from a body at -10.0C. How much work is done if the device exhausts heat into the environment at? (a) 25.0C; (b) 0.0C; (c) - 25.0C; in each case, is the...
A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste heat from this engine is rejected to a nearby lake at 60°F at a rate of 800 Btu/min. Determine...
Refer to the table for Moola at the bottom of this page to answer the following questions. What is the equilibrium interest rate in Moola? What is the level of investment at the equilibrium interest...
What is meant by product differentiation? Why does this result in imperfect competition? How can international trade be based on product differentiation?
What are the three principal classes of musical instruments?
2 Qu variables se usaran para segmentar estos mercados industriales?: a) barredoras industriales, b) fotocopiadoras, c) sistemas de control de produccin computarizados, d) agencias de renta de...
The following information applies to Bowling Green Metals Corporation for the year ended December 31, 2012: Total revenues from regular operations ........... $ 832,000 Total expenses from regular...
Question 6 (1 point) Which of the following ysstem requires a physical count of inventory to determine the amount of inventory to report on the balance sheet. a Perpetual Inventory System b Periodic...
Burger King is a US-based fast food restaurant chain. Burger King advertises, develops new foods, and procures ingredients, but it owns almost none of the actual restaurants. Instead, the restaurants...
A Carnot air conditioner takes energy from the thermal energy of a room at 70'F and transfers it as heat to the outdoors, which is at 96oF. For each joule of electric energy required to operate the...
A heat pump is used to heat a building. The outside temperature is -5.0'C, and the temperature inside the building is to be maintained at 22oC. The pump's coefficient of performance is 3.8, and the...
When you put an ice cube tray filled with liquid water in your freezer, the water eventually becomes solid ice. The solid is more ordered than the liquid-it has less entropy. Explain how this...
Zephyr Minerals completed the following transactions involving machinery. Machine No. 1550 was purchased for cash on April 1, 2020, at an installed cost of $75,000. Its useful life was estimated to...
Kelly is a self-employed tax attorney whose practice primarily involves tax planning. During the year, she attended a three-day seminar regarding new changes to the tax law. She incurred the...
At a recently concluded Annual General Meeting (AGM) of a company, one of the shareholders remarked; historical financial statements are essential in corporate reporting, particularly for compliance...
4. In hypothesis, Mr. Ng wants to compare the solution in Q3 to other solutions in different conditions. If the following constraints are newly set in place, answer how much different is going to be...
3C2H6O2+7H2O= C2H4O3+11H2+O2+H2C2O4+CH2O2 Glycolic acid is produced electrochemically from ethylene glycol under alkaline conditions(NaOH). Hydrogen is produced at the cathode, and formic acid and...
What is the weighted average cost of capital and why is it an important concept in business finance? LO1
1. As a general strategy, would you recommend that Carl take an aggressive approach to capacity expansion or more of a wait-and-see approach? 2. Should Carl go with the option for one facility that...
Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s but collides head-on with a padded goalpost and experiences a backward force of 1.76 10 4 N for 5.50 10 -2 s.
We have two equal-size boxes, A and B. Each box contains gas that behaves as an ideal gas. We insert a thermometer into each box and find that the gas in box A is at a temperature of 50C while the...
The conditions of standard temperature and pressure (STP) are a temperature of 0.00C and a pressure of 1.00 atm. (a) How many liters does 1.00 mol of any ideal gas occupy at STP? (b) For a scientist...
(a)A deuteron, 2/1H1 is the nucleus of a hydrogen isotope and consists of one proton and one neutron. The plasma of deuterons in a nuclear fusion reactor must be heated to about 300 million K. What...
Jennifer purchased a home for $1,000,000 in 2016. She paid $200,000 cash and borrowed the remaining $800,000. This is Jennifer's only residence. Assume that in year 2024, when the home had...
business plan describing company with strengths and weaknesses. Any gaps in plan. Recommendations for improvement of the plan.
You wish to buy a car today for $35,000. You plan to put 10% down and finance the rest at 5.20% p.a. for six years. You will make equal monthly payments of $_______.

To make ice, a freezer that is a reverse Carnot engine extracts 42 kJ as heat at

Question:

Step by Step Answer:

a Eq 2015 provides Kc 191 T 19H QL QHQL 1 Kc Kc which yields QH 49 kJ when Kc 57 and QL 42 ...View the full answer

Fundamentals of Physics

Students also viewed these Thermodynamics questions