Experimental Study on the Performance of a Maisotsenko Parallel Flow Air Cooling System with Variations in Secondary Air Mass Flow Rate

Abstract

Direct and indirect evaporative cooling systems are used as low-cost refrigeration and air conditioning techniques. Unlike
conventional vapor compression systems, these systems are environmentally friendly but cannot be used in many situations due
to thermodynamic limitations. For example, these air conditioning systems are found to be unfeasible in the case of climatic
conditions in Oman and Saudi Arabia. In this case, the Maisotsenko Cycle (M-Cycle) is actively connected with the abovementioned
energy producing and consuming systems. This cycle can play a vital role in building advanced HVAC and
refrigeration systems for various applications. The study on this Maisotsenko cooling system used a parallel flow air pattern
by varying the secondary air mass flow rate of 0.055296 kg/s, 0.041472 kg/s and 0.027648 kg/s. In this Maisotsenko system
study, the results obtained were that the highest difference in dry bulb temperature reduction occurred at a secondary air mass
flow rate of 0.027648 kg/s. The highest wet bulb effectiveness is produced at a secondary air mass flow rate of 0.027648 kg/s
and a secondary air mass flow rate of 0.0411472. And for the highest dew point effectiveness (DPE) is produced at a secondary
air mass flow rate of 0.0411472 kg/s. While at a secondary air mass flow rate of 0.055296 kg/s the cooling capacity and ER
reach the highest values of 0.09 Kw and 0.17% respectively...