Modeling and Simulation of a Desiccant Evaporative Cooling System

Abstract

This paper studies the performance of a proposed desiccant assisted air conditioning system operating under the hot and dry climate conditions of Mosul city, Iraq. The proposed system consists of three stages: indirect/direct evaporative cooler, an enthalpy wheel, and a traditional vapor compression system. The performance of the suggested system is compared with that of the vapor compression system operating at the same conditions. The simulation results showed that an optimum rotational speed of 12.5 rpm is required for the enthalpy wheel to achieve the best system performance. The simulation results also showed the ability of the proposed system to achieve a power consumption saving of 51.03%, in the ventilation mode, and 22.93%, in the mixing mode with a ventilation mixing ratio of 0.4 when compared to the vapor compression system.

Thermal Analysis of Absorption Air Conditioning Cycle Using Glycerin in Hot and Cold Storage Tanks

“…The saturated vapor is absorbed by a highpercentage of lithium bromide solution and water in the absorber container. The saturated vapor is then sent through the heat exchanger to the generator [25]. To cover the air conditioning load in the conditioned zone, chilled glycerin provides cooling energy.…”

“…[24] investigates a hybrid CFD-ANN technique for airflow and heat transport through an array of in-line flat tubes. [25] performs modeling and simulation of a desiccant evaporative cooling system.…”