Effect of Draught on Evaporative Cooling in Earthenware Ports

Abstract

An earthenware pot filled with water was exposed to draughts of 8.9 km/h and 15.7 km/h, at different times, from a fan. Water temperature, room air dry-bulb temperature and relative humidity and mass of water left in the pot were measured hourly or bi-hourly. Water temperature depressions up to 106 % of wet bulb depression and water cooling rates up to 146 W per square metre surface area of the pot were obtained.