DESIGN, CONSTRUCTION AND TESTING OF AN EVAPORATION SYSTEM CONSISTING OF POROUS JARS AND SAND FOR COOLING WATER

Abstract

In this work, we present an experimental study based on the combined transfer of heat and mass in a porous medium made of baked clay, in which measurements of the physical parameters (temperature, relative humidity, wind speed, quantity of water) were taken for 30 days. This article explores the design, construction and testing of an innovative water cooling system based on evaporation, using porous jars and a layer of sand. The results obtained show that climatic and physical factors have a major impact on cooling. The aim is to analyse the effectiveness of this system, both in terms of reducing the water temperature and preserving it in hot climatic conditions. The lowest water temperature value (minimum) of 16.32°C was observed during the last three days of December, when the relative air humidity had fallen to 45% with an ambient temperature of 27.55°C; during this period the wind speed was 20 km/h. The maximum temperature of the water in the jar, 25.51°C, was observed on 16 January with a relative air humidity of 81%, an ambient temperature of 27.55°C and a low wind speed of 10km/h. We therefore understand that the climatic and physical factors mentioned above have an influence on the phenomenon of water cooling from the fired clay jar.