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:
Answer rating: 80% (10 reviews)
R134a is expanded in an adiabatic process with an isentropic efficiency of 0...View the full answer
Answered By
Sufiyan Ahmed Tariq
I am a Chartered Accountant and an Associate Public & Finance Accountant. I also hold a bachelors of Commerce degree. I have over 8 years of experience in accounting, finance and auditing. Through out my career, I have worked with many leading multinational organisation.
I have helped a number of students in studies by teaching them key concepts of subjects like accounting, finance, corporate law and auditing. I help students understanding the complex situation by providing them daily life examples.
I can help you in the following subject / areas:
a) Accounting;
b) Finance;
c) Commerce;
d) Auditing; and
e) Corporate Law.
4.90+
7+ Reviews
17+ Question Solved
Related Book For
Thermodynamics An Engineering Approach
ISBN: 9781259822674
9th Edition
Authors: Yunus Cengel, Michael Boles, Mehmet Kanoglu
Question Posted:
Students also viewed these Engineering 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...
-
The first thing you must do is watch the video found in the Media Gallery entitled "For Module 3 discussion board: Financial Impact of Employee\ Attitudes." The information in this video is crucial...
-
As a means of preventing ice formation on the wings of a small, private aircraft, it is proposed that electric resistance heating elements be installed within the wings. To determine representative...
-
Ludlow Plastics manufactures custom park furniture and signage from recycled plastics (primarily shredded milk jugs.) Many of the companys customers are municipalities that are required by law to...
-
4. [20pts] Debug the following code by hand. Identify all errors, and whether they are a syntax or logic error (comments indicate how the code should work). int x=2, Y=4; Byte Z = -350; for (I=1; I...
-
You are required to study the information provided below concerning a Namibian listed company called Deep Yellow Limited, that operates in the mining industry. You should compile a report based on...
-
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
-
If Lee wants to be 95% confident that your estimate is within an absolute error range of plus or minus 2 percent, how many observations should you make?
-
Recent financial information of Victoria Falls Company is as follows; TZS 0 0 0 Profit after tax ( earnings ) 3 3 , 3 0 0 Dividends 2 0 , 0 0 0 Statement of financial position information: TZS 0 0 0...
-
PEM, Incorporated, is experiencing financial difficulty due to erratic sales of its only product, a high-capacity battery for laptop computers. The company's contribution format income statement for...
-
The initial velocity of a 2.30-kg block sliding down a frictionless inclined plane is 1.17 m/s. 1.70 s later, it has a velocity of 7.29 m/s. Based on this information, calculate the angle 0 of the...
-
What gerontological nursing competencies seem to be absent from the practice of the nurse's nurse Haley describes?What are some of the factors that could have contributed to the nurses behaviors? How...
-
Chapter 10 The concept of cost of capital: its relationship to the IRR of a project Know how to compute the cost of Debt Preferred stock Old common stock (retained earnings) using DCF model and the...
-
Use the Project Management Communications Bible, PMBOK guide and at least two additional sources regarding scope, cost, and schedule in project management to address the following: Write a 3 - 4 page...
-
Juanita owns a home in Richardson, TX. She purchases a Homeowners Policy (HO-3) from Farm State Ins. Co. The policy provides $100,000 in liability coverage (coverage E) and $5,000 in Med Pay coverage...
-
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...
-
Janice will need to pay $200 at the end of every month for the next 12 months, except for the payment of the 8th month. What is the present value, assuming a rate of 4%, compounded quarterly?
-
List and explain two management tools in the planning process and two measurable performance indicators. Explain in detail.
-
What does a high PE tell us about the value of the stock price (over or under valued)? What does a low PE tell us about the value of the stock price (over or under valued)? Be specific with your...
Study smarter with the SolutionInn App