Refrigerant-134a at 1600 kPa and 80C is expanded adiabatically in a closed system to 100 kPa with

Question:

Refrigerant-134a at 1600 kPa and 80°C is expanded adiabatically in a closed system to 100 kPa with an isentropic expansion efficiency of 85 percent. Determine the second-law efficiency of this expansion. Take T0 = 25°C and P0 = 100 kPa.

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: 9781259822674

9th Edition

Authors: Yunus Cengel, Michael Boles, Mehmet Kanoglu

See More Books

Question Posted: Nov 05, 2020 08:07 AM

See More Questions

Steam at 100 psia and 650F is expanded adiabatically in a closed system to 10 psia. Determine the work produced, in Btu/lbm, and the final temperature of steam for an isentropic expansion efficiency...
Refrigerant-134a at 700 kPa and 40C is expanded adiabatically in a closed system to 60 kPa. Determine the work produced, in kJ/kg, and final enthalpy for an isentropic expansion efficiency of 80...
Air is expanded in an adiabatic closed system from 180 psia and 1408F to 20 psia with an isentropic expansion efficiency of 95 percent. What is the second-law efficiency of this expansion? Take T0 5...
When a parameter is changed, does this affect the argument that was passed into the parameter?
Recall that Certified Public Accountants (CPAs) were surveyed on their firms' likelihood of reporting sustainability policies (measured as a probability between 0 and 1). The CPAs were divided into...
Think about an organization of which you have personal experience. Provide examples of as many of the 15 surface manifestations of organizational culture as you can.
Explain the important objectives of transport costing.
A car dealer presently leases a small computer with software for $5000 per year. As an alternative he could purchase the computer for $7000 and lease the software for $3500 per year. Any time he...
Question 1 Asset valuation and risk Personal Finance Problem Laura Drake wishes to estimate the value of an asset expected to provide cash inflows of $ 2 , 7 0 0 for each of the next 4 years and $ 1...
How people use, access, and discover data in business is being actively disrupted by tablets, which had been designed for consumers. Users have higher expectations for data displays and capabilities....
In a production facility, 1.5-in-thick, 1-ft 3-ft square brass plates ( = 532.5 lbm/ft 3 and c p = 0.091 Btu/ lbmF) that are initially at a uniform temperature of 75F are heated by passing them...
Obtain a relation for the second-law efficiency of a heat engine that receives heat QH from a source at temperature
What is systems selection?
Q3: In the section illustrated in Figure (1) the surface 1-4-7 is insulated. The convection heat transfer coefficient at surface 1-2-3 is 28W / (m ^ 2) ."C. The thermal conductivity of the solid...
Which of the following best demonstrates the Six Cs of Communication, "you" approach, and positive emphasis? Question 1 4 options: It will be February 1 0 before you will receive your materials. It...
please answer all the questionss.,.within 30 minutes. make sure the explanation and reasons are explained in very detailed manner as in why the chosen option is right and why other options are wrong....
1) A net force of 20 N is applied to the right on an object. If the acceleration of the object is 2.5 m/sec, a) What is the mass of the object? (8 kg) b) What is the weight of the object? (78.4 N) c)...
BO Corp. has a $2,500 capital budget, and has access to the following 5 independent projects. In all these 5 projects, cash outflows occur only in year O. Calculate the total NPV of the project(s)...
Several times we have used the hierarchy principle in selecting a model; that is, we have included nonsignificant lower-order terms in a model because they were factors involved in significant...
Illini Company, Inc. Balance Sheet as of 12/31/20X0 Assets Current Assets: Cash $1,500,000 Accounts receivable, net 18,000 Inventory 50,000 Total current assets 1,568,000 Equipment 90,000 Goodwill...
Steam at 6 MPa and 500C enters a two-stage adiabatic turbine at a rate of 15 kg/s. 10 percent of the steam is extracted at the end of the first stage at a pressure of 1.2 MPa for other use. The...
Refrigerant-134a at 140 kPa and -10C is compressed by an adiabatic 1.3-kW compressor to an exit state of 700 kPa and 60C. Neglecting the changes in kinetic and potential energies, determine (a) The...
An adiabatic air compressor is to be powered by a direct-coupled adiabatic steam turbine that is also driving a generator. Steam enters the turbine at 12.5 MPa and 500°C at a rate of 25 kg/s and...
Construction of consumer price index number for the given goods and services. Item Weight in % Base period price Current period price Food 35 150 145 Fuel 10 25 23 Cloth 20 75 65 Rent 15 30 30 Misc....
Gammaro Corporation has found that 80% of its sales in any given month are credit sales, while the remainder are cash sales of the credit sales, Gammaro Corporation has experienced the following...
Swifty Company estimates that 2022 sales will be $43,200 in quarter 1,$51,840 in quarter 2 , and $62,640 in quarter 3 , Cost of goods sold is 50% of sales. Management desires to have ending...

Refrigerant-134a at 1600 kPa and 80C is expanded adiabatically in a closed system to 100 kPa with

Question:

Step by Step Answer:

R134a is expanded in an adiabatic process with an isentropic efficiency of 0...View the full answer

Thermodynamics An Engineering Approach

Students also viewed these Engineering questions