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Abstract—The solar potential energy in Tunisia can be used like a principal factor for the operation of new technologies of air conditioning. Studies could be carried out like approaches of simulation, analyzes experimental or both unit. In this paper, we present an analytical solution of heat and mass transfer processes in regenerator and air conditioning system (ACS) cores of a heat recovery /desiccant cooling system (HRDCS) under Tunisia weather conditions. Simulations programs were carried out to test the principal components of the HRDC system. The results show that the coefficient of performance of system improves when we use the renewable energy for heating and cooling. This study is significant and effective to prove the efficiency of such HRDC systems in this country. Energy consumption in buildings has been increased in recent years with the development of the economy worldwide, recent studies have shown that buildings are responsible for the consumption of about 40% of the primary energy and the emission of nearly 33% of the greenhouse gases in the world (1). Therefore, liquid desiccant cooling technologies has been researched and demonstrated in recent years, focusing on applications such as cooling of human houses, commercial buildings, hospitals. It can be an efficient way to provide cooling and to reduce building energy consumption. Approximately 30 years ago, (2) accounted for the operation of a device of air-conditioning on a large scale using water- LiCl, where they presented the direct regeneration in collectors open and storage to the cold in the form of regenerated solution. Some investigators tested the use of the organic absorbents, such as tri ethylene glycol (TEG) to reduce the problem of corrosion involved in inorganic salts (3). Researches (4), (5) have been carried on the liquid desiccant systems for cooling and dehumidification by using solar energy to regenerate the liquid desiccant during the regeneration process and to re-use it for the dehumidification of air. In several cases, the direct regeneration of the liquid desiccant to the sun was considered by using a special type of collector.

Analytical Study of a Heat Recovery/Desiccant Cooling System under Tunisian Climatic Conditions