Influence of water flow rate on the greenhouse humidification in arid region

Abstract

Greenhouse is an enclosed structure which is made of transparent material such as glass which regulates the climatic conditions to maintain thermal comfort for the plants. It traps the solar radiation to improve the productivity of indoor vegetation. Current work focuses on the design and fabrication of the small scale or cold frame green house where in a Celdek 7090 cooling pad augments evaporative cooling mechanism. Air flow rate remains fixed and the water flow rate is varied. Performance parameters such as cooling effect, evaporation rate (ER), humidification efficiency (HE) and Coefficient of performance (COP) are determined. Results indicated that for the mass flow rate of 0.4 LPM, system gave a maximum cooling effect and cooling efficiency of 809.437 Watts and 62.552% respectively. Maximum COP value obtained is 2.4454.