Cooling tower evaporation is approximately what percentage of the circulation rate for every 10 F temperature difference across the tower?

The evaporation in a cooling tower is primarily influenced by the temperature difference between the entering and leaving water. For every 10°F difference in temperature across the cooling tower, approximately 1% of the circulation rate is lost to evaporation. This relationship reflects the balance of thermal dynamics and the physical process of water evaporation, which increases with higher temperatures and lower wet-bulb temperatures.

The percentage of water evaporated can be tied directly to this temperature difference because a more significant differential indicates more heat being removed, which in turn increases the amount of water that will evaporate to achieve the cooling effect required. This correlation assists engineers and technicians in estimating evaporation rates for operational planning and system design, making it a vital understanding for those working with cooling systems.

Other percentage choices presented do not align with conventional cooling tower evaporation estimates and would subsequently provide inaccurate data for calculations related to water loss within these systems.