Slide 1

Report
Heat transfer in turbulent
flow
CL - 232
Aim
To determine
•
the overall heat transfer coefficient
&
•
the individual film transfer coefficient
and verify Dittus-Boelter equation
Apparatus
• Double pipe heat exchanger
• Stainless steel tank
• Circulation pump for hot &
cold fluid
Procedure
• Switch on the heater of hot fluid tank
• Keep the flow rate of cold fluid constant
• Adjust the flow rate of hot fluid
• Once steady state is reached note down the inlet and outlet
temperatures of hot and cold fluid.
• Repeat the experiment for at least six different flow rates of
hot fluid.
Theory
Overall resistance = sum of resistances in series
• Dittus-Boelter equation

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