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I'm researching RH control between split air conditioning and desiccant wheel, but now it confused me. In split air conditioning model, AirLoopHVAC:UnitaryHeatPump:Air to Airhas been added to simulate the actual buildings; the desiccant wheel model is similar as examplefiles DesiccantDehumidifierWithCompanionCoil.idf. This two model both has thier independent heating coils to meet heating loads, and both reheat/regenerated coil to dehumidification. But the heating energy between two models has a big difference in all year. What could go wrong in those two models?

I'm researching RH control between split air conditioning and desiccant wheel, but now it confused me. In split air conditioning model, AirLoopHVAC:UnitaryHeatPump:Air to Airhas been added to simulate the actual buildings; the desiccant wheel model is similar as examplefiles DesiccantDehumidifierWithCompanionCoil.idf. This two model both has thier independent heating coils to meet heating loads, and both reheat/regenerated coil to dehumidification. But the heating energy between two models has a big difference in all year. What could go wrong in those two models?

I'm researching RH control between split air conditioning and desiccant wheel, but now it confused me. In split air conditioning model, AirLoopHVAC:UnitaryHeatPump:Air to Airhas been added to simulate the actual buildings; the desiccant wheel model is similar as examplefiles DesiccantDehumidifierWithCompanionCoil.idf. This two model both has thier independent heating coils to meet heating loads, and both reheat/regenerated coil to dehumidification. But the heating energy between two models has a big difference in all year. What could go wrong in those two models?

I'm researching RH control between split air conditioning and desiccant wheel, but now it confused me. In split air conditioning model, AirLoopHVAC:UnitaryHeatPump:Air to Airhas been added to simulate the actual buildings; the desiccant wheel model is similar as examplefiles DesiccantDehumidifierWithCompanionCoil.idf. This two model both has thier independent heating coils to meet heating loads, and both reheat/regenerated coil to dehumidification. But the heating energy between two models has a big difference in all year. What could go wrong in those two models?

Update:This screen capture was RH about desiccant wheel. wheel(Setpoint=50%RH). In winter(hot and humid weather's winter), RH obtained a bad control.