Performance of Pure Crossflow Heat Exchanger in Sensible Heat Transfer Application

Karthik Silaipillayarputhur and Tawfiq Al-Mughanam
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Karthik Silaipillayarputhur: Department of Mechanical Engineering, King Faisal University, Al Ahsa 31982, Saudi Arabia
Tawfiq Al-Mughanam: Department of Mechanical Engineering, King Faisal University, Al Ahsa 31982, Saudi Arabia

Energies, 2021, vol. 14, issue 17, 1-25

Abstract: All process industries involve the usage of heat exchanger equipment and understanding its performance during the design phase is very essential. The present research work specifies the performance of a pure cross flow heat exchanger in terms of dimensionless factors such as number of transfer units, capacity rate ratio, and heat exchanger effectiveness. Steady state sensible heat transfer was considered in the analysis. The matrix approach that was established in the earlier work was used in the study. The results were depicted in the form of charts, tables, and performance equations. It was observed that indeterminately increasing the number of transfer units past a threshold limit provided very marginal improvement in the performance of a pure cross flow heat exchanger. Likewise, flow pattern in a heat exchanger is usually assumed either as mixed or unmixed. However, due to various operating conditions, partially mixed conditions do exist. This work considers partially mixed conditions in the tube side of the heat exchanger. The correction factor for heat exchanger effectiveness was developed to accommodate partially mixed flow conditions in the pure cross flow heat exchanger.

Keywords: pure cross flow heat exchanger; design graphs; correction factors (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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