Nitrogen (N2) contained in an un-insulated piston-cylinder assembly fitted with a paddle wheel, initially at 400...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Nitrogen (N2) contained in an un-insulated piston-cylinder assembly fitted with a paddle wheel, initially at 400 kPa and 37°C and volume equal to 0.2 m³, is stirred by a paddle wheel operating at constant speed until its temperature reaches 237°C and the pressure increases by 30% in a polytropic process. Answer the questions below, use the method of variable specific heats in related computations. Please indicate the table number you are using when doing so; you ARE NOT ALLOWED to use constant specific heats, you must use variable specific heats to receive credit for your computations. A. Draw a schematic of the system including the boundary and include the mass and energy interactions between the system and the surroundings, if any. B. Determine the polytropic exponent for this process. C. Determine the boundary work, in kJ. Based on your numerical result, indicate the direction of work. D. If during the process the heat transfer from the system to the surroundings is 250 kJ determines the work supplied by the paddle wheel. E. List at least four assumptions and approximations that you used to generate the governing equations to solve parts (b), (c) and (d). Nitrogen (N2) contained in an un-insulated piston-cylinder assembly fitted with a paddle wheel, initially at 400 kPa and 37°C and volume equal to 0.2 m³, is stirred by a paddle wheel operating at constant speed until its temperature reaches 237°C and the pressure increases by 30% in a polytropic process. Answer the questions below, use the method of variable specific heats in related computations. Please indicate the table number you are using when doing so; you ARE NOT ALLOWED to use constant specific heats, you must use variable specific heats to receive credit for your computations. A. Draw a schematic of the system including the boundary and include the mass and energy interactions between the system and the surroundings, if any. B. Determine the polytropic exponent for this process. C. Determine the boundary work, in kJ. Based on your numerical result, indicate the direction of work. D. If during the process the heat transfer from the system to the surroundings is 250 kJ determines the work supplied by the paddle wheel. E. List at least four assumptions and approximations that you used to generate the governing equations to solve parts (b), (c) and (d).
Expert Answer:
Answer rating: 100% (QA)
SureI can help you with thatHere are the answers to questions a to ebased on the information in the image and the additional context you provided a Sc... View the full answer
Related Book For
Chemical Biochemical And Engineering Thermodynamics
ISBN: 9780470504796
5th Edition
Authors: Stanley I. Sandler
Posted Date:
Students also viewed these accounting questions
-
For 20Y2, Macklin Inc. reported a significant increase in net income. At the end of the year, John Mayer, the president, is presented with the following condensed comparative income statement: Line...
-
What are two problems that happens when an organization has tried to change? How successful was the change process?
-
An insulated piston - cylinder device contains 100 L of air at 400 kPa and 25oC. A paddle wheel within the cylinder is rotated until 15 kJ of work is done on the air while the pressure is held...
-
Marquis Company uses a weighted-average perpetual inventorysystem. August 2, 22 units were purchased at $3 per unit. August 18, 27 units were purchased at $5 per unit. August 29, 24 units were sold....
-
SFAS No. 133 was one of the most complex standards ever issued by the FASB. As a result, numerous implementation guidelines have been issued. Search the FASB ASC database to find three issues...
-
Which of the following two mutually exclusive alternatives should be selected if a 10 per cent interest rate is used for the calculation of net present value? Net cash flow Year 0 Net cash flow Year...
-
Samuelson uses activity-based costing. The company manufactures two products, X and Y. The annual production and sales of Products X Y are 3,000 and 2,000 units, respectively. There are three...
-
Two identical spheres with mass m are hung from silk threads of length L, as shown in Fig. 21.44. Each sphere has the same charge, so q1 = q2 = q. The radius of each sphere is very small compared to...
-
The 2020 and 2021 balance sheets for Pharoah Manufacturing Company appear below along with selected financial information. Pharoah declared no dividends during either year,and had 1,000 shares of...
-
Prepare a comprehensive business strategy for your new venture. Identify a business idea and explain how you plan to analyse the viability of the company idea as well as how you plan to develop it....
-
if stream of cashflows is monthly but its given to you quarterly rate what do you do for value. Explain.
-
a. Identify and discuss which positions in a large restaurant, club, or hotel would be exempt and which would nbe nonexempt. b. Discuss the use of live tanks and when they are practical, or not. c....
-
Con que velocidad en rev/min deber girar una compresora centrifuga de dimetro mayor 150 mm, si se desea una razn de presin de 5/1. El rendimiento Isentrpico es de 82%, la temperatura de entrada 12C....
-
Explain why you agree, or disagree, with the following statements: "It is stupid to treat employee stock options as an expense. They never require an outlay of cash by the company."
-
explain germanys environmental initiatives they took, explain in detail from where they start and where they are now and when to complete?
-
Do you think people today are less subject to conformity? Are there different types of social pressures to conform that are more important today than might have been important in prior generations?
-
Shreemaya Hotel in !adore was facing a problem of low demand for its rooms due to off season. The Managing Director (MD) of the hotel, Mrs. Sakina was very worried. She called upon the Marketing...
-
N-butane is to be liquefied to make liquid petroleum gas (LPG). The butane is available at 25 C and 1 bar, it will be compressed to 15 bar in a compressor that has an isentropic efficiency of 85%,...
-
Consider the Hilsch-Ranque vortex tube discussed in Illustration 4.5-6. Starting with air at 4 bar and 25 C, and exhaust pressure of 1.013 bar, and that half the air that enters the tube will be...
-
A refrigerant stream containing 40 mol% dichlorodifluoromethane (R12), 30 mol% 1,1,2,2 tetrafluoroethane (R134) and 1,1,1,2 tetrafluoroethane (R134a) at 20 bar and 25C is adiabatically flashed to 1...
-
Study the format of the analysis of variances in Exhibit 12-12. Suppose production is 156,000 units. Also assume the following: Other data are as shown in Exhibit 12-12. Prepare an analysis of...
-
The following questions are based on the data contained in Exhibit 12-9. 1. Suppose actual production and sales were 8,000 units instead of 7,000 units. (a) Compute the sales-volume variance. Is the...
-
Belfair Kayak Company makes molded plastic kayaks. Standards costs for an entry-level whitewater kayak are: Direct materials, 60 kilograms @ $5.50 per kilogram Direct labour, 1.5 hours $16 per hour...
Study smarter with the SolutionInn App