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Heat Exchanger Effectiveness
pages.mtu.eduinside of a countercurrent, double-pipe heat exchanger at 300K and is heated by an oil stream that enters at 385K at a rate of 3.2kg/s. The heat capacity of the oil is 1.89 kJ/kg K, and the average heat capacity of water over the temperature range of interest is 4.192 kJ/kg K. The overall heat-transfer coefficient of the exchanger is
Heat Exchangers Rev 02 - Nc State University
www4.ncsu.edu118 Figure 3: Fluid Temperature Profiles in a Double Pipe Heat Exchanger If we let Δz be a differential length, then the heat transfer across the differential length segment is q =dQ&=UdA(TH −TC) (28) where dA is the differential area associated with length dz.The total heat transferred across the heat exchanger is