Experimental Study of a Cross-Flow Indirect Evaporative Cooling System

Abstract

In this paper, an experiment was conducted to study the effectiveness of a cross-flow indirect evaporative cooler (IEC). The experiment aimed to investigate the influence of intake air velocity, inlet temperature, and secondary air humidity on the performance of the IEC. The key findings revealed that higher inlet temperatures led to a significant decrease in air temperature in both channels, with a notable temperature reduction from 40.6 °C to 29.21 °C and 26.42 °C for the secondary air. Conversely, at an inlet temperature of 27.5 °C, the temperature difference was only 3.58 °C. Lower inlet temperatures showed less pronounced temperature differences. Furthermore, increasing the secondary air velocity positively impacted the system's performance, resulting in lower outlet temperatures at a velocity of 2 m/s. Conversely, an increase in primary air velocity was found to have a detrimental effect on the system's performance.