A boiler operates at a constant pressure and the water evaporates at the rate of (0.96 from the total mass flow rate of water). Inlet and leaving water enthalpy are (100kJ/kg) and (1600 kJ/kg) respectively. The inlet and outlet velocity are (8 m/s) and (20 m/s) respectively. If 75% of the heat energy supplied to the boiler is used in evaporating the fluid. Determine the heat evaporation and work done if the inlet and outlet diameter are the same level. The fuel produces 28000 kJ of heat energy for one kg and the mass flow rate of water is 850 kg/h.

A boiler operates at a constant pressure and the water evaporates at the rate of (0.96 from the total mass flow rate of water). Inlet and leaving water enthalpy are (100kJ/kg) and (1600 kJ/kg) respectively. The inlet and outlet velocity are (8 m/s) and (20 m/s) respectively. If 75% of the heat energy supplied to the boiler is used in evaporating the fluid. Determine the heat evaporation and work done if the inlet and outlet diameter are the same level. The fuel produces 28000 kJ of heat energy for one kg and the mass flow rate of water is 850 kg/h.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.53P

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