Call For Paper Volume:7 Issue:9 Sep'2020 |

ANALYSIS OF UNIDIRECTIONAL AND BI-DIRECTIONAL FLOW HEAT EXCHANGERS

Publication Date : 22/08/2016


DOI : 10.21884/IJMTER.2016.3009.GKW0J

Author(s) :

K.Suresh , P.Srinivasulu , P.Raju.


Volume/Issue :
Volume 3
,
Issue 8
(08 - 2016)



Abstract :

The flow pattern through a heat exchanger affects the required heat exchanger surface. A counter flow heat exchanger needs the lowest heat transfer surface area. It gives a higher value for log mean temperature difference than either a parallel flow heat exchanger or a cross flow heat exchanger. A heat exchanger can have several different flow patterns. Counter flow, parallel flow, and cross flow are common heat exchanger types. A counter flow heat exchanger is the most efficient flow pattern of the three. It leads to the lowest required heat exchanger surface area because the log mean temperature drop is the highest for a counter flow heat exchanger. In this thesis analysis is done to compare the heat transfer rates between the two basic flow arrangements: (i) the unidirectional flow (parallel flow or co-current flow), and (ii) bidirectional flow (counter flow or counter-current flow). CFD analysis and thermal analysis is done on the heat exchanger for different fluids, by taking hot water and refrigerants R134A, R22, R600A and different materials of heat exchangers. 3D models are done in Pro/Engineer and analysis is done in Ansys.


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ANALYSIS OF UNIDIRECTIONAL AND BI-DIRECTIONAL FLOW HEAT EXCHANGERS

August 14, 2016