Psychrometer based on a contactless infrared thermometer with a predictive model for water evaporation

摘要

This study developed a novel psychrometer design in which air is pumped by a 0.35-W minifan through a chamber with a hanging wet wick and a single-packaged contactless infrared thermometer aimed at the wick. The thermometer is small sized, low cost, commercially available, and comes factory calibrated with a digital (IC)-C-2 communication port. It can measure the temperatures of the package itself (dry bulb) and the wick surface (wet bulb).