Water at a flow rate of 60 kg/s enters the shell-side
of a baffled shell-and-tube heat exchanger at 35 °C and leaves at
25 °C. The heat will be transferred to 150 kg/s of raw water coming
from a supply at 15 °C. You are requested to design the heat
exchanger for this purpose. A single shell and single tube pass is
preferable. The tube diameter is ¾ in. (19 mm outer diameter with
16 mm inner diameter) and tubes are laid out on 1 in. square pitch.
The water velocity in a single tube is 2.5 m/s. Maximum length of
the heat exchanger 5 m is required because of space limitations.
The tube material has k=70 W/m·K. Assume a total fouling resistance
of 0.000176 m2·K/W. Baffle spacing is 650 mm. Reasonable design
assumption can be made along with the calculation if it is needed.
Calculate: The number of tubes, shell diameter, overall heat
transfer coefficient and the length of the heat exchanger. Is this
please help me.course name is heat exchangers.
Get Answers For Free
Most questions answered within 1 hours.