Waterside (Free Cooling): (1/COP_CHPRE *QBLDGFC – 1/COP_CHFC*QBLDGFC)* OPHR,FC
Where COP_CHFC is the COP of chiller plant during the free-cooling period
(COP_CHFC – COP_CHPRE)/ COP_CHPRE = 1.25% per 1°C increase of TCHWS
COP_CHFC = [1.25%*(TCHWSFC – TCHWSPRE) + 1]*COP_CH
COP_CH = 0.605*COP_CHSM + 0.395*COP_CHWN
COP_CHWN = (COPaWN + COPbWN)/2
QBLDGWN = 0.395*[0.596*(0.184*NCHSM*QCHSM + 0.816*NCHWN*QCHWN)]
QBLDGFC = x%*QBLDGWN
OPHR,FC = y%*OPHR,yr
Airside (WN modeàDAHS mode):
kW_AHUPRE * (LFWN,PRE – LFDAHS,POST)* NAHU * OPHR,FC
For CSD: LFDAHS = LFWN = 1,
For VSD: LFDAHS = 0.795, LFWN = 0.562;
For EC or DC-motor: LFDAHS = 0.71, LFWN = 0.38
請點擊此處查看術語清單。（只提供英文版）
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