Water Cooled (Simple and Detailed)
This chiller uses performance information at reference conditions along with three curve fits (capacity, ambient relief, and power consumed) for cooling capacity and efficiency to determine the chiller operation at off-reference conditions. Simple water cooled chillers use entering condenser water temperature in the curves where detailed water cooled chillers use leaving condenser water temperature. The other difference is the power consumed curve for calculating part load power; the simple water cooled chiller uses a quadratic equation where the detailed water cooled chiller uses a bicubic equation.