The log mean temperature difference (LMTD) is used to determine the heat transfer rate in a...
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The log mean temperature difference (LMTD) is used to determine the heat transfer rate in a heat exchanger because: a. The heat transfer coefficients for the hot and cold fluid vary with position b. The temperature difference between the hot and cold fluids varies with position c. The flow rates of the two fluids are different Explain why counterflow heat exchangers have a better performance than parallel heat exchangers. The hot and cold inlet temperatures to a concentric tube heat exchanger are 240°C and 100°C, respectively. The hot and cold outlet temperatures are 130°C and 145°C, respectively. Is the heat exchanger operating in a parallel flow or in a counterflow configuration? Explain. (3 pts) The log mean temperature difference (LMTD) is used to determine the heat transfer rate in a heat exchanger because: a. The heat transfer coefficients for the hot and cold fluid vary with position b. The temperature difference between the hot and cold fluids varies with position c. The flow rates of the two fluids are different Explain why counterflow heat exchangers have a better performance than parallel heat exchangers. The hot and cold inlet temperatures to a concentric tube heat exchanger are 240°C and 100°C, respectively. The hot and cold outlet temperatures are 130°C and 145°C, respectively. Is the heat exchanger operating in a parallel flow or in a counterflow configuration? Explain. (3 pts)
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Question 1 The log mean temperature difference is used to determine the heat transfer rate in a heat exchanger because b the temperature difference between the hot and cold fluids varies with position ... View the full answer
Related Book For
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
Posted Date:
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