Insight into the significance of relative humidity on Nusselt number of crossflow heat exchangers with staggered elliptic tubes-Reference-Cited by-同舟云学术

Insight into the significance of relative humidity on Nusselt number of crossflow heat exchangers with staggered elliptic tubes

Published:2022-11-01 Issue: Volume: Page:095441002211351
ISSN:0954-4100
Container-title:Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering

Author:

Ahmed Arshan¹^ORCID,Hashmi Atta ul Mannan¹,Butt Fahad Rafi²^ORCID,Bangash Zafar¹,Ghani Shahbaz¹,Akhtar Imran¹

Affiliation:

1. Department of Mechanical Engineering, NUST College of Electrical & Mechanical Engineering, National University of Sciences and Technology, Islamabad, Pakistan

2. Digital Pakistan Lab, NUST College of Electrical & Mechanical Engineering, National University of Sciences and Technology, Islamabad, Pakistan

Abstract

Heat exchangers provide means to maintain the temperature of a system at its desired level. In this paper, numerical simulations of a heat exchanger with staggered arrangement of elliptical-shaped tubes have been performed to analyze its performance. Keeping the Reynolds number of dry and humid cooling air between 5000 and 20,000, the impact of relative humidity on the forced convection and the average Nusselt number is analyzed for a typical radiator cross-section. Numerical results indicate an increasing trend of the Nusselt number (up to 4.5%) with relative humidity. This variation becomes more pronounced when the capacity of air to absorb water increases with the same relative humidity but at higher temperatures.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Aerospace Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/09544100221135104

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