DIRECT AND INDIRECT EVAPORATIVE COOLING FOR CLOSED GREENHOUSE DURING THE SUMMER PEAK HOURS

NEWIR, A E; Ibrahim, M; HALAWA, M A; ABDELLATIF, O E

doi:10.21608/auej.2017.19146

DIRECT AND INDIRECT EVAPORATIVE COOLING FOR CLOSED GREENHOUSE DURING THE SUMMER PEAK HOURS

Document Type : Original Article

Authors

¹ Mechatronics Engineering Department, Faculty of Engineering, October 6 University.

² Mechanical Engineering Department, Faculty of Engineering, Al Azhar University

³ Mechanical Engineering Department, Faculty of Engineering, Benha University, Shoubra

10.21608/auej.2017.19146

Abstract

This study investigates experimentally, the effect of direct and indirect evaporative system on the temperature and relative humidity distribution inside a greenhouse. Experimental tests on a full-scale greenhouse of sizes 0.9 m x 0.55 m x 2.4 m (W x H X L) were conducted in October 6 University, 6 October city, Giza, Egypt at summer rush hours were used to obtain spatial distribution of air-temperature. Measurements of temperature distributions at about 63 points inside the greenhouse. One of the main conclusions is that experimental results were preserve the temperature variation below 30^оC during the day rush hours, especially in the area designated for the growth of plants inside the greenhouse.
Keywords: Greenhouse; direct evaporative cooling; indirect evaporative cooling.