Solar assisted liquid desiccant cooling using clay based membranes

S Shanmuga Priya,Sneha Reddy,Sanober Wadhwania,Priyadarshini Balachandar,P.B Raghuvir,T.M Mathew

doi:10.1051/matecconf/201814404011

Abstract

The environmental concerns have led to the urge of the usage of non-conventional energy resources like solar, wind, thermal, geothermal etc. which provide enormous source of energy without causing any further diminution of the environment. Instead of the conventional HVAC systems that cause colossal environmental perils, usage of liquid desiccants in coming in vogue whereby reducing ecological threats. Moreover, solar assisted systems provide further impulse to such systems. This paper discusses about the various comparisons between liquid desiccants: Lithium chloride, Potassium formate and Calcium chloride and concludes that potassium formate is the best desiccant to be used among the three. Potassium formate (HCOOK) is used which is cheaper and less corrosive as compared to the other aqueous salts, and has a negative crystallization temperature. Potassium formate is a new liquid desiccant and thus, not much research is available currently. The weather conditions of Manipal provide an appropriate condition for the experimentations of solar aided liquid desiccant evaporative cooling systems due to its humid climate and intense solar radiation obtained. The small scale experimentation also encounters the problem of liquid desiccant carryover by the air flow, with the help of clay based membranes which are again cheap, environmentally benign and obtained in a facile way. The projected system takes complete advantage of pure solar energy aimed at the regeneration of liquid desiccant.

Highlights

The rapid increase in world population and economic development has led to the immense deterioration of conventional type of energies with increasing demand for human comfort conditions
Chen et al [15] executed the experimental analysis on the performance assessment of liquid desiccant dehumidifier and cooling system aided with membrane using calcium chloride solution as the desiccant
3.1 Clay based membrane The micro-porous clay membrane was fabricated as given in the methodology above

Summary

Introduction

The rapid increase in world population and economic development has led to the immense deterioration of conventional type of energies with increasing demand for human comfort conditions. Chen et al [15] executed the experimental analysis on the performance assessment of liquid desiccant dehumidifier and cooling system aided with membrane using calcium chloride solution as the desiccant They concluded that the performance of the dehumidifier is solely influenced by ambient weather conditions and an increase in cooling output and decrease in effectiveness of the dehumidifier is observed with the increase in the flow rate of air

Objectives

Methods

Conclusion