210 Enthalpy Exchanger and Heat Exchanger in Cooling Mode This component calculates the effectiveness and outlet conditions of either a sensible heat exchanger or an enthalpy exchanger operating in the cooling mode. In the cooling mode conditions are always such that no condensation occurs in any air stream and both exchangers can be operated at their maximum effectivenesses, which is a function of the number of transfer units only. The sensible heat exchanger is controlled such that it operates only between 6 AM and 9 PM and then only if the outdoor temperature exceeds a specified control temperature. The module requires a weather generator and a psychrometric conversion module. Parameters (4): 1 Tei: Exhaust Inlet (Indoor) Temperature 2 wei: Exhaust Inlet (Indoor) Humidity Ratio 3 mfsup: Mass Flow Rate of Supply Air Stream 4 NTU: Number of Transfer Units Between Air and Matrix 5 mode 1 or 2 for HX or EX 6 Tcon Control Temperature. Operation if Tamb>Tcon Inputs (2): 1 Tsi: Supply Inlet (Outdoor) Temperature 2 wsi: Supply Inlet (Outdoor) Humidity Ratio Outputs (12): 1 Tso Supply Outlet Temperature 2 wso Supply Outlet Humidity Ratio 3 Teo Exhaust Outlet Temperature 4 weo Exhaust Outlet Humidity Ratio 5 di Enthalpy Difference between Supply In- and Outlet 6 Qrec Recovered Energy Rate (Sensible + Latent Energy) 7 Et Effectiveness for Temperature Transfer 8 Ew Effectiveness for Humidity Transfer 9 Ei Effectiveness for Enthalpy Transfer 10 hr Period of Actual Operation Reference: 1 Stiesch, G., Performance of Rotary Enthalpy Exchangers, M.S. Thesis in Mechanical Engineering, University of Wisconsin, 1994