Question: A vapor-compression refrigeration system for a household refrigerator has a refrigerating capacity of 1500 Btu/h and uses R-12 as the refrigerant. The refrigerant enters the

A vapor-compression refrigeration system for a household refrigerator has a refrigerating capacity of 1500 Btu/h and uses R-12 as the refrigerant. The refrigerant enters the evaporator at 21.422 lbf/in2 and exits at 5oF. The isentropic compressor efficiency is 70%. The refrigerant condenses at 122.95 lbf/in2 and exits the condenser as subcooled at 90oF. There are no significant pressure drops in the flows through the evaporator and condenser. Determine
(a) The mass flow rate of refrigerant in lb/min,
(b) The compressor power input in horsepower and
(c) The coefficient of performance.

Step by Step Solution

★★★★★

3.48 Rating (168 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

State1 given p 1 p 5 T 1 State2 given p 2 s 2 s 1 State3 given p 3 p 2 ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

861-ME-T (7595).docx

120 KBs Word File

Students Have Also Explored These Related Mechanical Engineering Questions!

Amaury, a citizen of France with no trade or business activities in the United States, sells at a gain 200 shares of Gage, Inc., a U.S. company. The sale takes place through Amaury's broker in Paris....

An ideal vapor-compression refrigeration system operates at steady state with Refrigerant R-12 as the working fluid. Superheated vapor enters the compressor at 25 lbf/in2, 10oF and saturated liquid...

A vapor-compression refrigeration system, using ammonia as the working fluid, has evaporator and condenser pressures of 1 bar and 14 bar, respectively. The refrigerant passes through the evaporator...

A vapor-compression refrigeration system, with a capacity of 15 tons, has superheated Refrigerant R-134a vapor entering the compressor at 15oC, 4 bar and exiting at 12 bar. The compression process...

A vapor-compression refrigeration system for a household refrigerator has a refrigerating capacity of 1500 Btu/h and uses R-134a as the refrigerant. The refrigerant enters the evaporator at30 lbf/in2...

A vapor - compression refrigeration system for a household refrigerator has a refrigerating capacity of 2 4 0 0 Btu / h . Refrigerant enters the evaporator at - 1 5 F and exits at 2 0 F . The...

A vapor - compression refrigeration system for a household refrigerator has a refrigerating capacity of 9 0 0 B t u h . Refrigerant enters the evaporator at - 2 0 F and exits at 2 0 F . The...

1 0 . 2 4 A vapor - compression refrigeration system for a household refrigerator has a refrigerating capacity of 1 0 0 0 B t u h . Refrigerant enters the evaporator at - 1 0 F and exits at 0 F . The...

3. A vapor-compression refrigeration system for a house-hold refrigerator has refrigerating capacity of 1000 Btu/h. Refrigerant enters the evaporator after being throttled to a saturated mixture...

FREE FREE Whats your next question The refrigeration system of Fig P11123 is another variation of the basic vaporcompression refrigeration system which attempts to reduce the compression work In this...

A vapor - compression refrigeration system operates with tetrafluoroethane as refrigerant. For the following set of operating conditions below: ( a ) Draw the ( T - S ) diagram of the cycle and...

Will the Web bring people closer together or drive each of us into our own private virtual worlds? Wired Americans are spending less time with friends and family, less time shopping in stores, and...

Compare and contrast at least three work related characteristics of Hispanic and Anglo-American cultures.

Evaluate the l i m i t i n terms o f the constant a . ( U s e symbolic notation and fractions where needed. Enter "DNE" i f the l i m i t does not exist. ) lim t 4 ( 9 t + 3 a t + 8 a ) =

Friedman Company is considering installing a new IT system. The cost of the new system is estimated to be $2,250,0000, but it would produce after-tax savings of $450,000 per year in labor costs. The...

The following data are taken from the financial statements of Fleetwood Company. Compute for each year (a) the receivables turnover ratio and (b) the average collection period. What conclusions about...

These selected condensed data are taken from recent balance sheets of Bob Evans Farms (in thousands). Compute the current ratio for each year and comment on yourresults. 2007 2006 Cash Accounts...

Refer to Exercise 15.14. Suppose the following input prices are provided for each year: 2012 2013 Unit price (power) .............. $ 2 ..................... $ 3 Unit price (materials) .......... 16...

Helena Company needs to increase its profits and so has embarked on a program to increase its overall productivity. After one year of operation, Kent Olson, manager of the Columbus plant, reported...

P opulation genetics Exercise 7.2.16 derives the following equation from population genetics that specifies the evolutionary dynamics of the frequency of a bacterial strain of interest: dp dt sps1 2...

Develop the stress relations for a thin-walled spherical pressure vessel.

A pressure cylinder has a diameter of 150 mm and has a 6-mm wall thickness. What pressure can this vessel carry if the maximum shear stress is not to exceed 25 Mpa?

A cylindrical pressure vessel has an outside diameter of 10 in and a wall thickness of 3/8 in. If the internal pressure is 350 psi, what is the maximum shear stress in the vessel walls?

Stat 1400 - Statistical Concepts for BusinessUnit 6 Normal Distributions Lab 6b Professors!Professors!Professors! 1.Suppose that you are deciding whether to take Professor Fisher's class or Professor...

Your cousin just got an offer from a start up, she will receive LE 2000 per month and the other part of her compensation is in the form of a stock grant of 500 shares of the companys stock....

Problem 4. Suppose X1, X2, ..... ,Xn ~ Poisson()\\). Given that the random variables are i.i.d, for 6 = exp()\\), 1. Find an unbiased estimator of 0? (Note that it may not be the best estimator. Any...