Injection of Air Bubbles and its Effects into A Shell and Coiled Heat Exchanger: A Review

Rohit Verma

Abstract

The purpose of this research is to investigate the effects of air bubble injection on the performance of a horizontal helical shell and coiled tube heat exchanger in an experimental setting. The effects of air bubble injection with varied air flow rates on the number of thermal units (NTU), exergy loss, and efficacy are examined. In present review, a shell and snaked tube heat exchanger has been numerically considered. The helically snaked tube and the impacts of on warm attributes of hotness exchanger will be proposed in this review. CFD investigation on ANSYS programming will be performed. Shell tube conveying cold water, helical curl containing heated water and U molded empty line conveys air. Warm properties and its impact have been considered in the review. A new approach for inserting air bubbles into the heat exchanger's shell side flow is proposed. The migration of air bubbles is thought to increase the disturbance and possibly the turbulence intensity of the shell side flow, resulting in a rise in the value of NTU and exergy loss. Furthermore, the bubbles' mixing effect and interaction with the thermal boundary layer can boost the velocity (and thus the Reynolds number) of the shell side flow.

Abstract

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