Cooling Coil with Partially Wet Surface By S. Gabel and M. Brandemuehl for ASHRAE Revised for TRNSYS by N. Blair and R. Schwarz This model was adapted strictly for use with the TRNSYS Program by the Solar Energy Laboratory. This subroutine calculates the outlet temperature , air dry bulb temperature and humidity ratio, and the total and sensible cooling capacity for a coil with partly wet and partly dry fin surface. The coil is considered to be operating under "part wet" surface conditions if the surface temperature at the air inlet is higher than the inlet air dewpoint temperature, but the surface temperature at the air outlet is lower than the entering dew point temperature. The coil is modeled as seperate dry and wet coils with common conditions at the boundary. Under dry conditions, the steady state air and water conditions can be determined using standard heat exchanger effectiveness relationships. A counterflow effectiveness model for enthalpy exchange is used which closely approximates the performance of counter crossflow heat exchanger. Sample input and output are included in the source code. REF: A Toolkit for Secondary HVAC System Energy Calculations May 25,1992 Joint Center for Energy Management University of Colorado at Boulder