Enyuan, Type1231 was developed based on correlations to model a heating radiator, not a cooling radiator and it is likely that the correlations simply do not hold true in cooling applications. I would look to a different model. I would also be a bit careful; most in-room cooling radiators operate above the dewpoint because getting condensation all over their surfaces causes other problems. As for connecting Type1231's output to Type56, define an energy gain input (as opposed to a constant value or a schedule) in the zone that contains the radiator. Then connect the Type1231 heat transfer output to the gain input. I would recommend that you split the gain about 80% convective and 20% radiative. Despite their name, most radiators do significant heating by convection. Best, David On 6/28/2013 13:34, Enyuan Hu wrote:
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