A shell-and-tube counter-flow heat exchanger with 1-shell pass and 20–tube passes is used to heat a chemical (Cp=2480 J/kg·°C) in the shell, with hot water in the tubes. The chemical enters the shell at 20°C and leaves at 70°C. The water (Cp=4180 J/kg·°C) enters the tubes at 130°C at a rate of 4 kg/s and leaves at 70°C. The tubes are thin-walled and have a diameter of 2.5 cm and length of 3 m per pass. Determine the mass flow rate of the chemical and the overall heat transfer coefficient of the heat exchanger.
Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
A shell-and-tube counter-flow heat exchanger with 1-shell pass and 20–tube passes is used to heat a chemical (Cp=2480 J/kg·°C) in the shell, with hot water in the tubes. The chemical enters the shell at 20°C and leaves at 70°C. The water (Cp=4180 J/kg·°C) enters the tubes at 130°C at a rate of 4 kg/s and leaves at 70°C. The tubes are thin-walled and have a diameter of 2.5 cm and length of 3 m per pass. Determine the mass flow rate of the chemical and the overall heat transfer coefficient of the heat exchanger.
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