Double Pipe Heat Exchangers

03 July, 2022
Posted in Natty

A Double Pipe Heat Exchangers consists of two metal pipes, one inside the other as shown in Figure 9.3. One fluid flows through the inner tube while the other fluid flows in the annular space between the pipe walls. When one of the fluids is hotter than the other, heat flows from it through the wall of the inner tube into the other fluid.

double pipe heat exchanger

o obtain a method capable of manufacturing a curved part of a double tube type heat exchanger easily by a method wherein two sheets of boards provided with recessed parts of meandering configurations which are to be an outer tube later are put together and fixed so as to clamp a meandering inner tube and thus a meandering double tube is formed.

CONSTITUTION: Two sheets of guide boards 4, having recessed parts 6, 6′, a meandering recessed part 7 corresponding to an outer tube of a double tube and becoming later a cooling water passageway and a recessed parts 8, 8′ becoming later an inlet and an outlet of the cooling water, are put on together so as to pinch the inner tube 5 and the whole peripheries of both of the sheets are fixed together by welding or the like. In this case, a recessed part 9 is provided in one place at either a curved part or a straight line part of the recessed part 7 to regulate a position of the inner tube 5. According to such a method, the curved part of the outer tube may be formed easily and a meandering double tube type heat exchanger may be obtained as well.

Double pipe heat exchangers are used in many industrial processes, cooling technology, refrigeration device, sustainable energy applications and another field. Different classification of Double…The heat transfer and fluid flow characteristics of nanofluids in a double-pipe heat exchanger remain relatively unexplored. The earlier researchers estimated heat transfer coefficient of different volume concentrations of different kinds of nanofluid under laminar and turbulent flow condition.