A refrigerator works between an inside temperature of 0 o C and a room temperature of 20

Question:

A refrigerator works between an inside temperature of 0^oC and a room temperature of 20^oC.

(a) What is the largest possible coefficient of performance it can have?

(b) If the inside of the refrigerator is to be cooled to –10^oC, what is the largest possible coefficient of performance it can have, assuming the same room temperature of 20^oC?

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

Step by Step Answer:

Related Book For book-img-for-question

Fundamentals of Ethics for Scientists and Engineers

ISBN: 978-0195134889

1st Edition

Authors: Edmund G. Seebauer, Robert L. Barry

See More Books

Question Posted: Jul 15, 2011 01:10 PM

See More Questions

What is the largest possible ? in Example 1 in the text? Data from example 1 Consider the initial value problem and take the rectangle R; |x| This solution is discontinuous at + ?/2, and there is no...
What is the largest acceptable error in position for 90% of the well-defined points on a map with a 1:24,000 scale that meets national map accuracy standards.
What is the largest slit width for which there are no minima when the wavelength of the incident light on the single slit is 600.nm?
Ari Goldstein issued $300,000 of 11%, five-year bonds payable on January 1, 2024. The market interest rate at the date of issuance was 10%, and the bonds pay interest semiannually. Requirements 1....
Weston Products manufactures an industrial cleaning compound that goes through three processing departments-Grinding, Mixing, and Cooking. All raw materials are introduced at the start of work in the...
Melissa Corporation is domiciled in Germany and is listed on both the Frankfurt and New York Stock Exchanges. Melissa has chosen to prepare consolidated financial statements in accordance with U.S....
P 67 Use the Standard Normal Table or technology to find the z-score that corresponds to the cumulative area or percentile. Table 4-Standard Normal Distribution Arca 0 z Z .09 .08 .07 .06 .05 .04 .03...
The following determination and distribution of excess schedule is prepared on January 1, 2012, the date on which Parker Company purchases a 60% interest in Share Company: On December 31, 2013,...
Two individuals, Catherine and Annabelle, wish to make exchanges. Catherine has three pencils and Annabelle also has three. Catherine values successive units of pencil as follows: $6, $5, $4, $3, $2,...
Fast Deliveries, Inc. (FDI), was organized in December last year and had limited activity last year. The resulting bala sheet at the beginning of the current year is provided below: Assets: Cash...
A Carnot engine works between two heat reservoirs at temperatures Th = 300 K and Tc = 200 K. (a) What is its efficiency? (b) If it absorbs 100 J from the hot reservoir during each cycle, how much...
An engine removes 250 J from a reservoir at 300 K and exhausts 200 J to a reservoir at 200 K. (a) What is its efficiency? (b) How much more work could be done if the engine were reversible?
Assume that the operating profit is 70,000 rather than 50,000. What would be the effect of this on ROSF?
In what respects is our tort system arguably plaintiff-oriented?
If a plaintiff releases one tortfeasor, a. under the common law, all of the tortfeasors were released. b. and wants to reserve their right to sue the other tortfeasors, they can enter into a covenant...
Contribution a. was allowed to all tortfeasors under the common law. b. is allowed for intentional tortfeasors. c. is justified on the basis that some defendants should not be saddled with all of the...
True Or False Some states have required some part of punitive-damage awards to be distributed to the state.
True Or False One criticism of punitive damages is that they lead to excessive litigation by plaintiffs who hope to intimidate defendants into settling.
Observe a social gathering, and compare and contrast the nonverbal displays present versus what you would see in a business or professional setting. Are there significant nonverbal communication...
Synthesize the products by drawing out reagents and intermediates along the way. `N H. OH HO HO
If the current price of a share of stock that pays a $1 dividend is $20, and if the expected capital gain is $2, what is the expected return? What is the return if there is an expected capital loss...
Thomson's Model of the Atom In the early years of the 20th century, a leading model of the structure of the atom was that of the English physicist J. J. Thomson (the discoverer of the electron). In...
Thomson's Model of the Atom Continued. Using Thomson's (outdated) model of the atom described in Problem 22.52, consider an atom consisting of two electrons, each of charge -e, embedded in a sphere...
A Uniformly Charged Slab A slab of insulating material has thickness 2d and is oriented so that its faces are parallel to the yz-plane and given by the planes x = d and x = -d. The y- and...
Suppose the correlation between the stock euro returns of Siemens and the USD/EUR exchange rate is 0.2. The standard deviation of the USD/EUR is 10% and the standard deviation of Siemens's stock euro...
list and describe the three key client-related factors that the advisor is required to consider when developing a "suitable" investment portfolio for their client. Please cite resources used
Year 1 2 3 Amount ($) 2000 3000 4000 An investment made today will pays you the above cash flows at the end of each year. If your required rate of return is 5% annual interest, how much will you pay...

A refrigerator works between an inside temperature of 0 o C and a room temperature of 20

Question:

Step by Step Answer:

a Express the COP in terms of T ...View the full answer

Fundamentals of Ethics for Scientists and Engineers

Students also viewed these Thermodynamics questions