Numerical Simulation of a Maisotsenko Cycle Heat Exchanger by Computational Fluid Dynamics

Heat exchangers that use the Maisotsenko Cycle have high efficiency despite using evaporative cooling. Therefore, in this study, based on computational fluid dynamics, the simulation of the Maisotsenko Cycle has been investigated. In this paper, the effects of all operational parameters such as temperature, inlet air huidity, air velocity in wet and dry channels, as well as geometric parameters such as the length of the heat exchanger and the height of the channels on the efficiency of heat exchanger have been studied. The simulation results showed that the heat exchanger has a favorable efficiency in different climatic conditions, so that wet efficiency for this heat exchanger varies from 103 to 115, but the increase in humidity will reduce the efficiency and the effectiveness of the heat exchanger.Also, the results showed that an increase in the velocity inside the dry and wet channels, respectively, decreases and increases the efficiency. Finally, the optimum ratio of the mass flow rate of wet channel to dry one is determined to be 1.3.