ABSTRACT
A double-pipe heat exchanger, in its
simplest form is just one pipe inside another larger pipe. One fluid
flows through the inside pipe and the other flows through the annulus
between the two pipes. The wall of the inner pipe is the heat transfer
surface.
In this project, a double-pipe heat
exchanger was designed and fabricatedwith a copper pipe having a
diameter of 15mm with length of 2m and a galvanized steel pipe diameter
40mm with length of 1.92m. The experimental analysis was conducted by
passing hot water in inner pipe and cold water in the annulus. The
experiment was performed with both parallel and counter flow
configurations under the same mass flow rates conditions. Inlet and
outlet temperatures were measured by using thermometers.
The data or values got were used to
calculate the log mean temperature difference, heat transferred and the
overall heat transfer coefficient for both parallel and counter flow
arrangement. And from the results, it was observed that counter flow is
more effective than parallel flow.