Energetic-exergetic analysis of an air handling unit to reduce energy consumption by a novel creative idea

By Meysam Yari, Rasool Kalbasi, Pouyan Talebizadehsardari. International journal of numerical methods for heat & fluid flow, 2019

58 citations recorded by the source corpus.

Purpose This study aims to simulate the flow and heat transfer through an air handling unit to reduce its energy consumption by a novel creative idea of using an air-to-air heat exchanger. Design/methodology/approach To do this, both first and second laws of thermodynamics energy and exergy balance equations were solved numerically by an appropriate developed computer code. Findings Using the air-to-air heat exchanger in dry conditions decreases the cooling coil load by 0.9 per cent, whereas the reduction for humid conditions is 27 per cent. Similarly, using air-to-air heat exchanger leads to an increase in the first law of efficiency in dry and humid conditions by 0.9 per cent and 36.8 per cent, respectively. Originality/value The second law of efficiency increases by 1.55 per cent and 2.77 per cent in dry and humid conditions, respectively. In other words, the effect of using an air-to-air heat exchanger in humid conditions is more than that in dry conditions.

Subfields: Building and Construction, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/015b5ef38ef7cc39dbf5e8994acffdb4cd8bd100