Oversized air-conditioning systems and overcooled buildings in hot and humid climates
Chandra Sekhar - live from Singapore - Jan 13th 2016
Professor Chandra Sekhar explores why air-conditioned buildings in hot and humid climates are often so cold that one gets reminded to bring a jacket when going to the office. He considers the consequences of raising the set point temperatures as a means of improving the situation and exposes some of the engineering challenges that necessitate a relook at the way air-conditioned buildings in such climates are designed. In doing so he reviews some of the fundamental issues of cooling and dehumidification facing the HVAC designer and the inevitable and inherent design of an oversized system and its undesirable consequences in terms of an overcooled indoor environment at peak and part loads in hot and humid climates. He goes on to discuss solutions for creating a more thermally comfortable and healthy indoor environment that can also save energy.