In a refrigeration system, would you recommend condensing the refrigerant-134a at a pressure of 0.7 or 1.0

Question:

In a refrigeration system, would you recommend condensing the refrigerant-134a at a pressure of 0.7 or 1.0 MPa if heat is to be rejected to a cooling medium at 15oC? Why?

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

Step by Step Answer:

Related Book For book-img-for-question

Thermodynamics An Engineering Approach

ISBN: 978-0073398174

8th edition

Authors: Yunus A. Cengel, Michael A. Boles

See More Books

Question Posted: Apr 01, 2016 05:31 AM

See More Questions

Heat is to be removed from a reaction vessel operating at 75C by supplying water at 27C and 0.12 kg/s through a thin-walled tube of 15-mm diameter. The convection coefficient between the tube outer...
Heat is to be transferred from water to air through an aluminum wall. It is proposed to add rectangular fins 0.05-in. thick and 3/4-in. long spaced 0.08 in. apart to the aluminium surface to aid in...
Heat is to be conducted along a circuit board that has a copper layer on one side. The circuit board is 15 cm long and 15 cm wide, and the thicknesses of the copper and epoxy layers are 0.1 mm and...
Cindy Bagnal, the manager of Cayce Printing Service, has provided you with the following aging schedule for Cayce's accounts receivable: Cindy indicates that the $126,700 of accounts receivable...
On January 1, 2014, when the market interest rate was 14%, Luba Corporation issued bonds in the face amount of $500,000 with interest at 12% payable semiannually. The bonds mature on December 31,...
A continuous random variable on the interval [0, 4] could take on the value . Determine whether each statement is true or false, and explain why.
Our partition shows that 800 of the 2000 customers in our test set own a tablet, while 230 of the 600 customers in our training set own a tablet. Test whether the partition is valid for this...
You are considering buying stock A. If the economy grows rapidly, you may earn 30 percent on the investment, while a declining economy could result in a 20 percent loss. Slow economic growth may...
ASA500 requires the auditor to obtain sufficient appropriate evidence to support the opinion issued in an audit report. Auditors must he persuaded that their opinion is correct with a high level of...
1. How does Apple use strategic management to compete? 2. What is leaderships role in Apples strategic implementation? 3. What are key forces in the general and industry environments that affect...
An ideal gas refrigeration cycle using air as the working fluid is to maintain a refrigerated space at - 23oC while rejecting heat to the surrounding medium at 27oC. If the pressure ratio of the...
Air enters the compressor of an ideal gas refrigeration cycle at 7oC and 35 kPa and the turbine at 37oC and 160 kPa. The mass flow rate of air through the cycle is 0.2 kg/s. Assuming variable...
A mass of $m=50 \mathrm{~kg}$ is suspended by a spring attached to a rope that is wound around a drum with radius $r=0.4 \mathrm{~m}$ and moment of inertia about the point of rotation \(I_{O}=45...
Contract for construction crew and equipment 8 Build parking lots Exterior lighting 11 7 20 12 Build foundation Start Interior Interior 12 9 electrical Final wiring finish Purchase 8 14 12 material...
Mad Hatter Enterprises purchased new equipment for $369,000, terms f.o.b. shipping point. Other costs connected with the purchase were as follows: State sales tax Freight costs Insurance while in...
Write down a C program that takes runs scored by a batsman and prints the status according to the following policy: Runs scored >80 50-79 30-49 10-29 <10 Grade Excellent 4 Very Good Good Average Poor
Consider the standard two-period maximization problem for investor j over s states of nature: Subject to S max u(c) + (s)u(c;}(s)) S=1 Cjo + q(s) C; (s) = Wjo +244) S=1 where all terms are as defined...
At what point should a leader cease gathering data, take the risk, and simply make the decision? Support your position.
Harold Perdue entered an individually negotiated employment contract with Nicholas Paynter. Under terms of the contract, Perdue was to work for Paynter as a private investigator in Paynters newly...
A copper sphere of 10-mm diameter, initially at a prescribed elevated temperature T;, is quenched in a saturated (1 atm) water bath. Using the lumped capacitance method, estimate the time for the...
A diffuser receives an ideal gas flow at 100 kPa, 300 K with a velocity of 250 m/s and the exit velocity is 25 m/s. Determine the exit temperature if the gas is argon, helium or nitrogen.
Air flows into a diffuser at 300 m/s, 300 K and 100 kPa. At the exit the velocity is very small but the pressure is high. Find the exit temperature assuming zero heat transfer.
The front of a jet engine acts as a diffuser receiving air at 900 km/h, -5C, 50 kPa, bringing it to 80 m/s relative to the engine before entering the compressor. If the flow area is reduced to 80% of...
Given the following financial data for the Smith Corporation, calculate the length of the firm's operating cycle (OC). Sales $2,610,000 Cost of Good Sold $2,088,000 Inventory $ 278,400 Accounts...
The predetermined overhead rate is usually calculated Group of answer choices At the end of each year At the beginning of each month At the beginning of the year At the end of the month
ajax county collects property taxes for the cities within the county, Ajax county collected 1000 from citizens in Beatty city that belong to Beatty city what would be the appropriate entries for ajax...

In a refrigeration system, would you recommend condensing the refrigerant-134a at a pressure of 0.7 or 1.0

Question:

Step by Step Answer:

To Conclude I can say that allowing a temperature diff...View the full answer

Thermodynamics An Engineering Approach

Students also viewed these Mechanical Engineering questions