Energetic-exergetic analysis of an air handling unit to reduce energy consumption by a novel creative idea. Issue 10 (7th October 2019)

• Record Type: Journal Article
• Authors: Yari, Meysam; Kalbasi, Rasool; Talebizadehsardari, Pouyan
• Is Part Of: International journal of numerical methods for heat & fluid flow. Volume 29:Issue 10(2019)
• Page Start: 3959
• Page End: 3975
• Publication Date: 2019-10-07
• Subjects: Efficiency -- Exergy analysis -- Irreversibility -- AHU -- Air-to-air heat exchanger; Heat -- Transmission -- Mathematics -- Periodicals; Fluid dynamics -- Mathematics -- Periodicals; 536.2
• DOI: 10.1108/HFF-09-2018-0524
• Languages: English
• ISSNs: 0961-5539

Abstract

Abstract : 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.