A very long, wide sheet of plastic 4 mm thick and initially at 20C is suddenly exposed

Question:

A very long, wide sheet of plastic 4 mm thick and initially at 20°C is suddenly exposed on both sides to an atmosphere of steam at 102°C.

(a) If there is negligible thermal resistance between the steam and the surfaces of the plastic, how long will it take for the temperature at the centerline of the sheet to change significantly?

(b) What would be the bulk average temperature of the plastic at this time? For the plastic, k = 0.138 W/m-°C and α = 0.00035 m²/h.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Unit Operations Of Chemical Engineering

ISBN: 9780072848236

7th Edition

Authors: Warren McCabe, Julian Smith, Peter Harriott

See More Books

Question Posted: Oct 20, 2023 02:45 AM

See More Questions

Collars A and B are connected to the cord that passes over the small pulley at C. When A is located at D, B is a distance d 1 to the left of D. If A moves at a constant speed v A , to the right,...
Consider the following four structures. a. Which of these compounds would have the same physical properties (melting point, boiling point, density, and so on)? b. Which of these compounds are trans...
A thin (1.0-mm-thick) coat of fresh paint has just been sprayed over a 1.5-m by 1.5-m square steel body part, which approximates a flat surface. The paint contains a volatile solvent that initially...
The Whitewater LLP is equally owned by three partners and has the following balance sheet at the end of the current tax year: Partner Petula is an active (i.e., general) partner retiring from the...
What can first-level and middle-level managers and team leaders do about shaping the culture of a firm?
On June 30, Fabre Fabrics has the following data pertaining to the retail inventory method: Goods available for sale: at cost $35,000, at retail $50,000; net sales $40,000, and ending inventory at...
Benick Industries purchased a new lathe on January 1, 1996, for $300,000. Benick estimates that the lathe will have a useful life of four years and that the company will be able to sell it at the end...
For more than 75 years, New England Foundry, Inc., has manufactured wood stoves for home use. In recent years, with increasing energy prices, George Mathison, president of New England Foundry, has...
Valenzuela, Incorporated, has a cash cycle of 3 9 days, an operating cycle of 5 4 days, and an inventory period of 2 2 . 5 days. The company reported cost of goods sold in the amount of $ 3 5 6 , 0 0...
A long steel rod 1 in. in diameter is initially at a uniform temperature of 1.200F. It is suddenly immersed in a quenching bath of oil at 150F. In 4 min its average temperature drops to 250F. How...
Derive the equation for steady-state heat transfer through a spherical shell of inner radius r 1 and outer radius r 2 . Arrange the result for easy comparison with the solution for a thick-walled...
How did the federal governments power to regulate business develop?
From your reading in Stevens & Smith (2010), a basic description of a medical detoxification, dual-diagnosis inpatient hospital, independent rehab programs, partial hospitalization, halfway houses,...
Description: duff owes relatives $13,000 for college loans. find the required quarterly payment into a sinking fund if duff pays off the loan in 3 years and the interest rate is 8% per year...
1 3 , 9 5 0 ) Repairs and Maintenance ( $ 2 , 8 5 0 ) Utilities Expense ( $ 8 8 0 ) Operating Income $ 1 0 , 2 4 2 Other Income - Gain on Sale $ 3 0 0 Interest Expense ( $ 2 5 0 ) Earnings Before...
Description: The company currently has outstanding a bond with a 5.5 percent coupon rate and another bond with a 3.5 percent coupon rate. The firm has been informed by its investment banker that...
Describe the effects of tool wear on the workpiece and on the overall machining operation.
Suppose the market is semistrong form efficient. Can you expect to earn excess returns if you make trades based on? a. Your brokers information about record earnings for a stock? b. Rumors about a...
The output of the MATLAB atan2 function is in radians. Write a function called atan2d that produces an output in degrees.
Write a function that accepts temperature in degrees Fahrenheit (F) and computes the corresponding value in degrees Celsius (C). The relation between the two is Be sure to test your function. 5 ...
An object thrown vertically with a speed 0 reaches a height h at time t, where Write and test a function that computes the time t required to reach a specified height h, for a given value of 0 ....
The Purple Face Mask Company is carefully examining its pricing based upon a change in product demand. Currently, the company uses a volume-based pricing system with direct labor hours as the cost...
Golden Manufacturing Company started operations by acquiring $150,000 cash from the issue of common stock. On January 1, Year 1, the company purchased equipment that cost $120,000 cash, had an...
On July 1, 2021, Empire Incorporated lends $8,400 to a customer and receives a 10% note due in two years. Interest is due in full on July 1, 2023, the due date of the note. What is the amount of...

A very long, wide sheet of plastic 4 mm thick and initially at 20C is suddenly exposed

Question:

Step by Step Answer:

a Time required for the temperature at the centerline of the sheet to change significantly To estima...View the full answer

Unit Operations Of Chemical Engineering

Students also viewed these Engineering questions