Question: = Problem 3 (30 Points - Comparing the LMTD and -NTU methods) A boiler used to generate saturated steam is in the form of

= Problem 3 (30 Points - Comparing the LMTD and -NTU methods) A boiler used to generate saturated steam is in the form of an unfinned cross-flow heat exchanger, where water flows through the tubes at a rate of 3 kg/s and a high temperature gas flows over the tubes at a rate of 10 kg/s. The gas has a specific heat of Cp 1120 J/kg-K and enters the heat exchanger at 1400 K. The water enters as saturated liquid at 450 K and leaves as saturated vapor with negligible pressure drop. Note that the enthalpy of evaporation is hfg = 2024 kJ/kg. The overall heat transfer coefficient is 50 W/mK and there are 500 tubes, with the same diameter of 25 mm. (i) Sketch the temperature distribution in the HX. ME410 Heat Transfer, Summer 2023 Homework #6, Due 7/31/2023 (ii) (iii) Using the LMTD method, calculate the length of the pipes required in the heat exchanger. Same as in question (ii), but use the -NTU method. Compare your answers and discuss.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mechanical Engineering Questions!

what is the hockey stick phenomenon in relation to the use of incentives to increase supply chain surplus? What steps can be taken to address it?

A boiler used to generate saturated steam is in the form of an un-finned, cross-flow heat exchanger, with water flowing through the tubes and a high-temperature gas in cross flow over the tubes. The...

A flue gas is cooled from 1.100 to I50oC and the heat is used to generate saturated steam at 100 C in a boiler. The flue gas has a heal capacity given by: Water enters the boiler at l00oC, and is...

Seth borrows X for ten years at an annual effective interest rate of 4%, to be repaid with equal payments at the end of each year. The outstanding loan balance at the end of the eighth year is...

Consumer Reports tested 11 brands of vanilla yogurt and found these numbers of calories per serving: 130 160 150 120 120 110 170 160 110 130 90 a) Check the assumptions and conditions for inference....

What competitive advantage do you think Zara is pursuing? How does it exploit that competitive advantage?

=+3. For the series of Output per hour of labor: a) Make a time series plot.

The March 31, 2020, adjusted trial balance for Amusement Park Repair is shown below with accounts in alphabetical order. Required Preparation Component: a. Place an X in the space provided beside...

A drinking water treatment facility operates a JULIA process to destroy concentrated per - fluorinated octanoic acid ( PFOA ) from a drinking water treatment system. PFOA is concentrated and then...

Read the scenario below and write a letter of request to the person as indicated. . Use the PEDAG format and all the components of a standard business letter. . You may refer to the examples supplied...

Understand the potential data biases in the Data Science process for designing a modern information system. Explain the issues related to representation biases in the design of such systems. You can...

Jennifer Lopez and Ben Affleck are purchasing their first investment property together consisting of a 150,000 SF shopping center has an average rents of $32 per SF per year for an NNN lease.The...

Prepare an MRP Progress Report that is similar to an agile standup meeting. Using the textbox below address the three questions thoroughly: What have you completed since the last MRP Progress Report...

Scenario Larry, the head of Marketing has heard about you. And at TNH Tires, like much of the rest of the world, the reward for good work is more work. Larry: Thank you so much for making time for...

Pick a resource and data set that CloudWatch monitors and collects. How would the use of CloudWatch make a difference in your cloud maintenance? How will you use the data gathered by CloudWatch? Will...

A company's Cash account shows a balance of $5,680 at the end of the month. Comparing the company's Cash account with the monthly bank statement reveals several additional cash transactions such as...

A company has the following incomplete production budget data for the first quarter: In the previous December, ending inventory was 200 units, which was the minimum required, at 10% of projected...

71. Let X denote the number of white balls selected when k balls are chosen at random from an urn containing n white and m black balls. (a) Compute P{X = i}. (b) Let, for i = 1, 2, . . . , k; j = 1,...

75. Let a1 Answered: 1 week ago

73. For the multinomial distribution (Exercise 17), let Ni denote the number of times outcome i occurs. Find (a) E[Ni]; (b) Var(Ni); (c) Cov(Ni , Nj); (d) Compute the expected number of outcomes that...