Water (cp = 4180 J/kg·K) is to be heated by solarheated hot air (cp = 1010 J/kg·K) in a double-pipe counter- flow heat exchanger. Air enters the heat exchanger at 90°C at a rate of 0.3 kg/s, while water enters at 22°C at a rate of 0.1 kg/s. The overall heat transfer coefficient based on the inner side of the tube is given to be 80 W/m2·K. The length of the tube is 12 m and the internal diameter of the tube is 1.2 cm. Determine the outlet temperatures of the water and the air.
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.
Water (cp = 4180 J/kg·K) is to be heated by solarheated
hot air (cp = 1010 J/kg·K) in a double-pipe counter-
flow heat exchanger. Air enters the heat exchanger at
90°C at a rate of 0.3 kg/s, while water enters at 22°C at a
rate of 0.1 kg/s. The overall heat transfer coefficient based
on the inner side of the tube is given to be 80 W/m2·K.
The length of the tube is 12 m and the internal diameter
of the tube is 1.2 cm. Determine the outlet temperatures of
the water and the air.
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 7 images
