A feed water heater that supplies a boiler consists of a shell-and-tube heat exchanger with one shell
Question:
A feed water heater that supplies a boiler consists of a shell-and-tube heat exchanger with one shell pass and two tube passes. One hundred thin-walled tubes each have a diameter of 20 mm and a length (per pass) of 2 m. Under normal operating conditions water enters the tubes at 10 kg/s and 290 K and is heated by condensing saturated steam at 1 atm on the outer surface of the tubes. The convection coefficient of the saturated steam is 10.000 W/m2 ∙ K.
(a) Determine the water outlet temperature.
(b) With all other conditions remaining the same, but accounting for changes in the overall heat transfer coefficient, plot the water outlet temperature as a function of the water flow rate for 5 < mc < 20 kg/s.
(c On the plot of part (b), generate two additional curves for the water outlet temperature as a function of flow rate for fouling factors of R'f = 0.0002 and 0.0005 m2 ∙ K/W.
Step by Step Answer:
KNOWN Shellandtube one shell two tube passes heat exchanger design Water flow rate and inlet temperature Steam pressure and convection coefficient FIN...View the full answer
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
Students also viewed these Mechanical Engineering questions
-
A shell-and-tube heat exchanger with one shell pass and two tube passes is used as a regenerator, to preheat milk before it is pasteurized. Cold milk enters the regenerator at T c,i = 5?C, while hot...
-
A shell-and-tube heat exchanger with one shell pass and four tube passes has 4.83 m2 of heat-transfer area. The overall heat transfer coefficient is 320 W/m2 K. It is proposed to cool a stream of oil...
-
A shell-and-tube heat exchanger with one shell pass and 20 tube passes uses hot water on the tube side to heat oil on the shell side. The single copper tube has inner and outer diameters of 20 and 24...
-
A vertical force P is applied to the ends of cord AB of length a and spring AC. If the spring has an unstretched length δ, determine the angle θ for equilibrium. Given: P = 10 lb δ...
-
Identify several outcomes you expect from occupying a leadership position. What valences do you attach to them?
-
The file P08_18.xlsx categorizes 250 randomly selected consumers on the basis of their gender, their age, and their preference for our brand or a competitors brand of a low-calorie soft drink. Use a...
-
Al Hart of Hart Engineering is considering the purchase of a new copy machine. He purchased the old machine two years ago for \($8,500\). When it was purchased the old machine had an estimated useful...
-
Gannett Glass Company manufactures three types of safety plate glass: large, medium, and small. All three products have high demand. Thus, Gannett Glass is able to sell all the safety glass that it...
-
??????? You have estimated the risk neutral interest rate tree for the continuously compounded interest rate as in the table above. There is equal risk neutral probability to move up or down the tree...
-
A local department store is having a BoGoHo (Buy One, Get One Half Off) sale. The store manager wants a program that allows the salesclerk to enter the prices of two items. The program should...
-
Saturated steam at 0.14bar is condensed in a shell-and-tube heat exchanger with one shell pass and two tube passes consisting of 130 brass tubes, each with a length per pass of 2 m. The tubes have...
-
Saturated steam at 110C is condensed in a shell-and-tube heat exchanger (1 shell pass; 2, 4,... tube passes) with a UA value of 2.5 kW/K. Cooling water enters at 40C. (a) Calculate the cooling water...
-
What is the likelihood that hydrogen (H 2 ) will become a widely used fuel and that the hydrogen economy will become a reality? In particular, what are the advantages and disadvantages of H 2 as a...
-
Bonus depreciation is a special tax treatment that allows you to depreciate the entire cost of an investment in the first year. A company buys a $1 million piece of machinery. What is the present...
-
emerson steel is experiencing rapid frowth the company's annual dividends are expected to grow at 28% per year during the next four years 17% over the following year, and then 5% per year...
-
Consider a $9700 loan with payments every month, an APR of 9%, and a loan term of 10 years. 1. Construct a table showing the interest payment and loan balance after each month. Verify that, with...
-
Before going away to college, Elizabeth Martin had led an insulated life. Growing up, the people in her neighborhood, the students in her schools, and the friends she spent most of her time with were...
-
23. Your company wants to open a shipping facility that would produce perpetual revenues of $4M per year if exchange rates rise or $6M per year if exchange rates fall. The perpetual operating costs...
-
The possible values of a discrete random variable cannot be listed. In Exercises 1316, determine whether the statement is true or false. If the statement is false, rewrite it as a true statement.
-
What recommendations would you make to Big Four firms to help them (1) avoid confrontations with governmental officials in an authoritarian society and (2) deal effectively with such confrontations...
-
Classify each crystalline solid as molecular, ionic, or atomic. (a) Au(s) (b) CH 3 CH 2 OH(s) (c) CaF 2 (s)
-
A highly polished chromium flat plate is placed in a high-speed wind tunnel to simulate flow over the fuselage of a supersonic aircraft. The air flowing in the wind tunnel is at a temperature of 0?C,...
-
Air at a static temperature of 70?F and a static pressure of 0.1 psia flows at zero angle of attack over a thin electrically heated flat plate at a velocity of 200 fps. If the plate is 4 in long in...
-
Heat rejection from high-speed racing automobiles is a problem because the required heat exchangers generally create additional drag. For a car to be tested at the Bonneville Salt Flats, it has been...
-
Question 7 4 pts Find the slope of the line tangent to the graph of the function at the given value of x. y= (7/x) square root of (x) x = 4 (11/16) (11/16) (3/16) (3/16) Question 8 Find an equation...
-
1.Using the HCPCS code book, assign code(s) for the following scenario: Newborn was sent home with a Pediatric crib, hospital grade, fully enclosed. List the HCPCS code verified in the Tabular List...
-
Decrease in end of year receivables of a firm will the operating cycle. A- increase B- decrease C- has no effect. If Nico Corporation has cost of goods sold of $300,000 and average inventory of...
Study smarter with the SolutionInn App