EBK 3I-EBK: WELDING PRINCIPLES & APPLIC
8th Edition
ISBN: 9780176919764
Author: Jeffus
Publisher: VST
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Chapter 5, Problem 12R
What is the purpose of a hot pass?
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Liquid hexane flows through a counter flow heat exchanger at 5 m3/h as shown in Figure E5.5.The hexane enters the heat exchanger at 90°C. Water, flowing at 5 m3/h, is used to cool the hexane.The water enters the heat exchanger at 15°C. The UA product of the heat exchanger is found to be2.7 kW/K. Determine the outlet temperatures of the hot and cold fluids and the heat transfer ratebetween them using LMTD method.
Determine the fluid outlet temperatures and the heat transfer rate for the counter flow heatexchanger described in Problem 3 using the ε-NTU model. Assume that the properties can beevaluated at the given fluid inlet temperatures.
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Chapter 5 Solutions
EBK 3I-EBK: WELDING PRINCIPLES & APPLIC
Ch. 5 - List some applications that use low-pressure...Ch. 5 - List some applications that use medium-pressure...Ch. 5 - List some applications that use high-pressure...Ch. 5 - Describe the differences between pipe and tubing.Ch. 5 - What are the advantages of welded piping systems...Ch. 5 - Why must the ends of pipe be beveled before being...Ch. 5 - How can the ends of a pipe be beveled?Ch. 5 - Why is the end of a pipe beveled at a 371/2 angle?Ch. 5 - What causes root suck-back or a concave root face?Ch. 5 - Why are arc strikes outside the welding zone...
Ch. 5 - What are the purposes of backing rings?Ch. 5 - What is the purpose of a hot pass?Ch. 5 - Why must the weld crater be cleaned before...Ch. 5 - What is the maximum width of the cover pass? Why?Ch. 5 - When is the 1G welding position used?Ch. 5 - What can make welding in the 2G vertical fixed...Ch. 5 - What supports the welds on a 2G pipe joint?Ch. 5 - On 5G welds, what usually determines the direction...Ch. 5 - What angle is the pipe at in the 6G position?Ch. 5 - In addition to continuously changing the weld...
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