Double pipe heat exchanger design calculation pdf

The two most common heat exchanger design problems are those of rating and sizing. Design a double pipe heat exchanger with bare inner multitubes that can be used to cool engine oil with cold sea water. Heat exchangers are typically classified according to flow arrangement and type of construction. Convective heat transfer from the outer tube wall to the outside fluid. Double pipe heat exchanger design with counterflow or. Fluid engine oil sea water inlet temperature, c 65 20 outlet temperature, c 55 25 heat load, kw 117. The doublepipe heat exchanger is one of the simplest types of heat exchangers. Heat exchanger is one of the important devices in cooling and heating process in factories, buildings, transports and others. It is called a double pipe exchanger because one fluid flows inside a pipe and the other fluid flows between that pipe and another pipe that surrounds the first. Double pipe heat exchanger design requires use of the heat transfer rate, the log mean temperature difference, and an estimate of the overall heat transfer coefficient to calculate the estimated heat transfer surface area. The heat exchange duty a llows calculation of the log mean. This project work is based on design and thermal analysis of double pipe heat exchanger. The equations for the analysis of a double pipe heat exchanger are stated and are summarized in the following suggested order.

Double pipe heat exchanger calculation does the thermal and hydraulic design of double pipe heat exchangers and estimate number of hairpin required. Analysis of double pipe heat exchangers, suggessted order. Although the necessary equations for heat transfer and the pressure drop in a double pipe heat. It can be operated as a parallel flow or as a counterflow heat exchanger.