Skip to main content
Open Access Publications from the University of California

Evaluation of cooling performance of thermally activated building system with evaporative cooling source for typical United States climates

Creative Commons 'BY' version 3.0 license

Thermally activated building systems (TABS) are gaining popularity as a potentially energy efficient strategy for conditioning buildings. These systems can use large surfaces for heat exchange, and the temperature of the cooling water can be only a few degrees lower than the room air temperature. This small temperature difference allows the use of alternative cooling sources, for example, indirect/direct evaporative cooling, to possibly eliminate refrigerant cooling to reduce energy consumption.  In addition, TABS allow the potential to reduce the electric power demand of the building if a night time precooling strategy is used. This research has investigated the application range of using slab-integrated hydronic radiant cooling (TABS) with a cooling tower providing chilled water as the primary way of conditioning the building. The objectives of this study were the following: 1)quantify the climatic limits of using evaporative cooling (cooling tower) for radiant ceiling slab system; 2) identify design options to expand the application; and 3) provide climate based advice for system design and operation.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View