Question: 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

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 778F and P0 5 14.7 psia.

Step by Step Solution

★★★★★

3.43 Rating (156 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Air is expanded in an adiabatic closed system with an isentropic efficiency of 95 The second law eff... 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)

837-ME-T (5512).docx

120 KBs Word File

Students Have Also Explored These Related Mechanical Engineering Questions!

Air is expanded in an adiabatic turbine of 85 percent isentropic efficiency from an inlet state of 2200 kPa and 300C to an outlet pressure of 200 kPa. Calculate the outlet temperature of air and the...

Air is expanded in an adiabatic turbine of 90 percent isentropic efficiency from an inlet state of 2800 kPa and 400C to an outlet pressure of 150 kPa. Calculate the outlet temperature of air, the...

Air is expanded in an adiabatic turbine from 1.5 MPa and 500C to 120 kPa and 110C. The volumetric flow rate of the air is 10 m3 /min at the inlet. Determine the power output of the turbine. Assume no...

5-43C Consider an adiabatic turbine operating steadily. Does the work output of the turbine have to be equal to the decrease in the energy of the steam flowing through it? 5-44C Consider an air...

6 . 1 - kg of air at 3 0 0 kPa and 1 2 7 C is contained in a piston - cylinder device. Air is now allowed to expand in a reversible, isothermal process until its pressure is 1 0 0 kPa. Determine the...

4. Steam enters an adiabatic turbine at 900 psia and 900F and leaves at a pressure of 50 psia. Determine the maximum amount of work that can be delivered by this turbine. w_max =305 Btu/lbm 6. 1-kg...

Ten lbm of R-134a is expanded without any heat transfer in a closed system from 120 psia and 100F to 20 psia. If the isentropic expansion efficiency is 95 percent, what is the final volume of this...

ANSWER ALL QUESTIONS. WILL GIVE A GOOD RATING FOR A CORRECT ANSWERS ONLY 2-35E A spring whose spring constant is 200 lbf/in has an initial force of 100 lbf acting on it. Determine the work, in Btu,...

ANSWER ALL QUESTIONS. BE SURE TO ANSWER 2 -1 C What is the difference between the macroscopic and microscopic forms of energy? 2-2C What is total energy? Identify the different forms of energy that...

8-66E Refrigerant-134a enters an adiabatic compressor as saturated vapor at 30 psia at a rate of 20 ft/min and exits at 70 psia pressure. If the isentropic efficiency of the compressor is 80 percent,...

You find an unresponsive Patient who is not breathing. After activating the emergency response system, you determine there is no pulse. What is your next action?

Saccharin is an artificial sweetener that is used in diet beverages. In order for it to be metabolized by the body, it must pass into cells. Below are shown the two forms of saccharin. Saccharin has...

Consider the following cash flows: 5 points eBook \ table [ [ Year , Cash Ftow ] , [ 0 , - $ 2 9 , 5 0 0 Consider the following two mutually exclusive projects: \ table [ [ Year , Cash Flow ( A ) ,...

Banks do not a. take in and secure peoples money. b. make loans to individuals and businesses. c. pay interest on the money on deposit with the bank. d. sell corporate stock to the public.

In a balanced three-phase wye-delta system, the source has an abc-phase sequence and Van = 120

In a three-phase balanced delta-delta system, the source has an abc-phase sequence. The line and load impedances are and , respectively. If the load current in the delta is IAB = 15

A food safety guideline is that the mercury in fish should be below 1 part per million (ppm) Listed below are the amounts of mercury (ppm) found in tuna sushi sampled at different stores in a major...

Question 33 Test the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats at the 0.02 significance level. The null and alternative...

help please thanks Consider the relationship between the number of bids an item on ebay received and the item's selling price. The following is a sample of 3 items sold through an auction. Price in...