Hot exhaust gases of a stationary diesel engine are to be used to generate steam in an evaporator. Exhaust gases (cp = 1051 J/kg·K) enter the heat exchanger at 550°C at a rate of 0.25 kg/s while water enters as saturated liquid and evaporates at 200°C (hfg = 1941 kJ/kg). The heat transfer surface area of the heat exchanger based on water side is 0.5 m2 and overall heat transfer coefficient is 1780 W/m2·K. Determine the rate of heat transfer, the exit temperature of exhaust gases, and the rate of evaporation of water.
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.
Hot exhaust gases of a stationary diesel engine are
to be used to generate steam in an evaporator. Exhaust gases
(cp = 1051 J/kg·K) enter the heat exchanger at 550°C at a
rate of 0.25 kg/s while water enters as saturated liquid and
evaporates at 200°C (hfg = 1941 kJ/kg). The heat transfer
surface area of the heat exchanger based on water side is
0.5 m2 and overall heat transfer coefficient is 1780 W/m2·K.
Determine the rate of heat transfer, the exit temperature of
exhaust gases, and the rate of evaporation of water.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 4 images
