Heat Exchange in Thermal Chillers
To dispose of waste heat in absorption chillers, evaporation re-cooling systems are predominantly used. Heat is released into the ambient air via open or closed water cooling circuit (evaporative cooling effect). As relatively large amounts of waste heat must be dissipated, the costs and required electrical energy for pumps and ventilators are significant.
To dissipate smaller amounts of waste heat, dry heat exchangers can also be used. Such devices require very little maintenance. However, the re-cooling temperature is always higher than the ambient temperature. At especially high ambient temperatures, some dry re-cooling devices can be sprayed.