Monitoring Calcification in Rigid Wet Cooling Media Used in Direct Evaporative Cooling of Data Centers.

Abstract

Rigid wet cooling media is a key component of direct and indirect evaporative cooling systems. Evaporation is the process of a substance in a liquid state changing to a gaseous state. When water evaporates only H2O molecules gets evaporated and the other chemicals in the water is left behind on the surface as residue. Soul concentration is to determine how calcium scale affects the overall performance i.e. saturation efficiency and pressure drop across the media pad. An Accelerated Degradation Testing by rapid wetting and drying on the media pads at elevated levels of calcium was planned on the media pad. This research focuses on monitoring the degradation that occurs over its usage and establish a key maintenance parameter for water used in media pad. It was clearly found that scale deposition on media pads does not affect the media pad performance. Water conductivity is the key maintenance parameter for monitoring sump replenishing cycles which will result in reduced water usage.