Design,Development and Comparison of Double Pipe Heat Exchanger with Conventional and Annular Baffles

Abstract

The experimental comparison of different types of heat transfer augmentation techniques in heat exchangers by extended surfaces,
obstruction devices and swirl flow device. Concentric tube type heat exchanger is one of simplest type of heat exchanger.
Efficiency and heat transfer rate of double pipe tube heat exchanger without conventional and annular baffles is not much. On the
basis of literature study different design parameters like velocity, dimensionless numbers, fin co-efficient, overall heat transfer coefficient, and length were identified. Literature describes the different methods which may help to improve the heat transfer rate.
This paper shows the experimental setup and apparatus needed to carry out the double pipe heat exchanger experiment. The
apparatus includes double pipe heat exchangers with infrared temperature gun, flow control valve, rotameter, water pump and
storage tank. Heat exchangers are modified in space of annular and conventional baffles. Results shows that performance
parameters of conventional baffle is higher than the annular baffle of double pipe heat exchanger. Heat transfer rate and
efficiency increase with increase of mass flow rate.