The EF values of the NBC DHW systems have been updated to reflect requirements in Table 9.36.4.2
All reference DHW are conventional tanks systems with volume V=189.3 L
Per the table for gas-fired systems: EF = 0.67-0.0005V = 0.575
for oil-fired: EF = 0.59-0.0005V = 0.495
For reference electric tank systems a top-inlet was assumed, and therefore a maximum standby loss
of 35+0.20V = 72.9 W per Table 9.36.4.2. Assuming input capacity of 3 kW, and using the EF equation
in the OEE NBC 9.36.5 HOT2000 modelling guide, the EF was adjusted to 0.876
The EF values of the NBC DHW systems have been updated to reflect requirements in Table 9.36.4.2 All reference DHW are conventional tanks systems with volume V=189.3 L
Per the table for gas-fired systems: EF = 0.67-0.0005V = 0.575 for oil-fired: EF = 0.59-0.0005V = 0.495
For reference electric tank systems a top-inlet was assumed, and therefore a maximum standby loss of 35+0.20V = 72.9 W per Table 9.36.4.2. Assuming input capacity of 3 kW, and using the EF equation in the OEE NBC 9.36.5 HOT2000 modelling guide, the EF was adjusted to 0.876