A numerical and experimental study on the energy efficiency of a regenerative Heat and Mass Exchanger utilizing the counter-flow Maisotsenko cycle

Abstract

In this work, a numerical and experimental study is performed to evaluate the affecting variables on<br>energy efficiency of a novel regenerative evaporative cooler utilizing dew-point indirect evaporative<br>cooling. For first time, an investigation is experimentally and numerically carried out to study the<br>effects of the channel number on important parameters such as product temperature and humidity<br>ratio. Investigations are carried out for five configurations with various channel numbers. The comparison of the numerical and experimental results is obtained and well accuracy observed. For the<br>five studied configurations, the results show that with an increase in the number of channels, the<br>outlet temperature decreases. For an inlet air flow rate of 100–600 m3/h, the cooled outlet flow temperature changes to the range of 23.4–30.7°C, 19.7–28.3°C, 18–26.4°C, 17.2–25°C and 16.6–23.8°C.<br>For the configurations with finned channels, the percentage of increase in produced air temperature<br>reaches 11.5% for HMX B, 18.6% for HMX C, 23.4% for HMX D and 26.9% for HMX E, as compared with<br>HMX A.