FREE Trial
Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Hot exhaust gases are used in a finned-tube cross-flow heat exchanger to heat 2.5 kg/s of water from 35 to 85 C. The gases ????p

Hot exhaust gases are used in a finned-tube cross-flow heat exchanger to heat 2.5 kg/s of water from 35 to 85 °C. The gases ????p =1.09 kJ/kg ·°C enter at 200 °C and leave at 93 °C. The overall heat- transfer coefficient is 180W/m2·°C. Calculate the area of the heat exchanger using (a) the LMTD approach and (b) the effectiveness-NTU method.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Fundamentals of Heat and Mass Transfer

Fundamentals of Heat and Mass Transfer

Authors: Incropera, Dewitt, Bergman, Lavine

6th Edition

978-0470055540, 471457280, 470881453, 470055545, 978-0470881453, 978-0471457282

More Books

Students also viewed these Chemical Engineering questions

Question

★★★★★
Hot exhaust gases are used in a shell-and-tube exchanger to heat 2.5 kg/s of water from 35 to 85C. The gases assumed to have the properties of air, enter at 200C and leave at 93C. The overall heat...

Answered: 1 week ago

Question

★★★★★
A cross flow heat exchanger similar to the one shown in Figure 5.31 is being used to recover heat from a flow of hot air that enters the heat exchanger at 200F with a mass flow rate of 14,400 lbm/h....

Answered: 1 week ago

Question

★★★★★
Hot air is used to heat cold water from 35C to 95C in a finned-tube heat exchanger similar to the one shown in Figure 5.31. The water flows in the tubes at a flow rate of 1.9 kg/s. The air, at 1 atm,...

Answered: 1 week ago

Question

★★★★★
Your examination of the records of Wilson Ltd, which was established on 1 March 2015, reveals that the accountant debited the Land, Buildings and Equipment account with the following items (ignore...

Answered: 1 week ago

Question

★★★★★
A survey of 300 U.S. online shoppers was conducted. In response to the question of what would influence the shopper to spend more money online in 2012, 18% said free shipping, 13% said offered...

Answered: 1 week ago

Question

★★★★★
Briefly explain the purpose and concept of Line of Balance. AppendixLO1

Answered: 1 week ago

Question

★★★★★
6. In addition to not overloading his students with new information, how else can Mr. Beech assist his students in understanding and remembering in the future?

Answered: 1 week ago

Question

★★★★★
Hospitable Co. provides the following sales forecast for the next four months: The company wants to end each month with ending finished goods inventory equal to 25% of next months sales. Finished...

Answered: 1 week ago

Question

★★★★★
Use the following information for Brief Exercises 2-32 and 2-33: Morning Smiles Coffee Company manufactures Stoneware French Press coffee makers and sold 8,000 coffee makers during the month of March...

Answered: 1 week ago

Question

★★★★★
Their 1.5 inch, 90-degree copper elbow (see below) is a very popular item in the plumbing line that comes packaged in 10 elbows per box. The box costs about $65 to Western, and Western sells it at...

Answered: 1 week ago

Question

★★★★★
Building Your Skills Case (LO8-2, LO8-4, LO8-8, LO8-9, LO8-10] You have just been hired as a new management trainee by Earrings Unlimited, a distributor of earrings to various retail outlets located...

Answered: 1 week ago

Question

★★★★★
1. Calculate the mean, standard deviation, and n for the data given. 2. An experiment was run by the Soho County School District that suggested having a routine sleep schedule improved average grades...

Answered: 1 week ago

Question

★★★★★
Disrupt yourself by Eric Ries Nine Ways Leaders Should React To Unexpected Negative Feedback DR. ROBERT PEARL AND THE PERMANENTE MEDICAL GROUP OF NORTHERN CALIFORNIA: A LESSON IN STRATEGIC LEADERSHIP...

Answered: 1 week ago

Question

★★★★★
The trial balance for Skylar plc as at 31 October 20X7 is shown below. '000 '000 Share capital 15,000 Trade payables 3,348 Trade receivables 10,254 Accruals at 31 October 20X7 387 5% bank loan...

Answered: 1 week ago

Question

★★★★★
Exercise 10-6 Various liabilities LO2 Designer Architects had the following additional information at its November 30, 2020 year-endi a. The Unearned Revenue account showed a balance of $74,000,...

Answered: 1 week ago

Question

★★★★★
The following statements were printed in journal articles in the field of psychology. Explain to a person who is unfamiliar with the concept of confidence intervals what each statement means. "The...

Answered: 1 week ago

Question

★★★★★
Jurvin Enterprises: T Accounts And C Connect Shopping Cart Fabletics Chapter 3 Graded Exercises Help Save & Exit Submit Check my work 2 Jurvin Enterprises recorded the following transactions for the...

Answered: 1 week ago

Question

★★★★★
Problem 3.5 (4 points). We will prove, in steps, that rank (L) = rank(LT) for any LE Rnxm (a) Prove that rank (L) = rank (LTL). (Hint: use Problem 3.4.) (b) Use part (a) to deduce that that rank(L) =...

Answered: 1 week ago

Question

★★★★★
A thin electrical heater is inserted between a long circular rod and a concentric tube with inner and outer radii of 20 and 40 mm. The rod (A) has a thermal conductivity of k A = 0.15 W/m. K, while...

Answered: 1 week ago

Question

★★★★★
A flat-bottomed hole 6 mm in diameter is bored to a depth of 24 mm in a diffuse, gray material having an emissivity of 0.8 and a uniform temperature of 1000 K. (a) Determine the radiant power leaving...

Answered: 1 week ago

Question

★★★★★
A plane wal1 of thickness 0.6 m (L = 0.3 m) is made of steel (k = 30 W/m K. p = 7900 kg/m 3 , c = 640 J/kg K). It is initially at a uniform temperature and is then exposed to air on both surfaces....

Answered: 1 week ago

Question

★★★★★
Reconsider Example 10.8 involving an investigation of the effects of different heat treatments on the yield point of steel ingots. a. If and , what is b for a level .05 F test when , and ? b. For the...

Answered: 1 week ago

Question

★★★★★
When sample sizes are equal , the parameters of the alternative parameterization are restricted by . For unequal sample sizes, the most natural restriction is . Use this to show that What is E(MSTr)...

Answered: 1 week ago

Question

★★★★★
Samples of six different brands of diet/imitation margarine were analyzed to determine the level of physiologically active polyunsaturated fatty acids (PAPFUA, in percentages), resulting in the...

Answered: 1 week ago

Previous Question Next Question