Describe a suitable method for estimating the performance of a heat exchanger in the 2 shell,...
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Describe a suitable method for estimating the performance of a heat exchanger in the 2 shell, 4 tube pass configuration, and explain why this is required. A counter- current heat exchanger of this type, which can be assumed to have area 20m², is operated with an inlet temperature of the air of 150 °C (shell side) and with a cold water stream inlet temperature of 20°C. The cold side tube diameter is 8mm, and the water flow velocity through the tube is 4.5m.s¹. The air side flow rate is 1kg.s¹ and the heat transfer coefficient can be assumed to be 55W.m2.K-¹. Apply the method that you have identified to estimate the heat transfer in this configuration, and the cold and hot stream outlet temperatures for this duty. Describe a suitable method for estimating the performance of a heat exchanger in the 2 shell, 4 tube pass configuration, and explain why this is required. A counter- current heat exchanger of this type, which can be assumed to have area 20m², is operated with an inlet temperature of the air of 150 °C (shell side) and with a cold water stream inlet temperature of 20°C. The cold side tube diameter is 8mm, and the water flow velocity through the tube is 4.5m.s¹. The air side flow rate is 1kg.s¹ and the heat transfer coefficient can be assumed to be 55W.m2.K-¹. Apply the method that you have identified to estimate the heat transfer in this configuration, and the cold and hot stream outlet temperatures for this duty.
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A sensible method for estimating the performance of this heat exchanger would be to use the LMTD met... View the full answer
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