Abstract
Cooling tower is an integrated part of any geothermal power plant because waste heat from turbine exhaust steam must be continuously rejected to make the plants operate. According to the heat dump choice, the cooling system can be classified as wet cooling and dry cooling. Dry cooling towers conduct heat transfer through air-cooled heat exchanger that separates the working fluid from the cooling air. In a dry cooling tower, air can be introduced by either mechanical draft fans or by natural draft tall tower to move the air across the air-cooled heat exchangers. Ambient condition has significant effect on the performance of dry cooling towers. Most geothermal power plants, especially the geothermal power plants using Enhanced Geothermal Systems (EGS) technology, have unique ambient conditions and applications. The Queensland Geothermal Energy Centre of Excellence (QGECE) developed natural draft dry cooling towers (NDDCTs) and steel cooling tower technologies for geothermal power plants.
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