Document ID: chunk:federal_register_of_legislation:F2015L01712:clause:7_27:p1
Version: federal_register_of_legislation:F2015L01712
Segment Type: clause
Provision Reference: sch 7 cl 27 (pt 1/2)
Character Range: 37304–39972

27  Equation 3—abatement amount from each installed HE fan (AHE,i)
 (1) For equation 2, AHE,i is worked out using the equation (equation 3):
  where, for the ith installed HE fan:
PE,i is the motor input power, in kilowatts, and is:
 (a) if the model of the fan was tested using the same drive, motor and transmission as the fan as installed—the motor input power measured in that test; and
Note: See paragraphs 16(4)(b) and (5)(e).
 (b) otherwise—the motor input power given by equation 4 (section 28).
𝜂i is the overall driven fan efficiency, and is:
 (a) if the model of the fan was tested using the same drive, motor and transmission as the fan as installed—the overall driven fan efficiency given by equation 5 (section 29); and
Note: See paragraph 16(4)(b).
 (b) otherwise—the overall driven fan efficiency given by equation 6 (section 30).
CMi is the component mismatch factor, and is:
 (a) if the model of the fan was tested using the same drive, motor and transmission as the fan as installed—1; and
Note: See paragraph 16(4)(b).
 (b) otherwise—0.9.
𝜂B,i is the baseline overall energy efficiency, given by equation 7 (section 31).
CC,i is the part load compensation factor for the controller of the fan, and is:
 (a) if the motor is controlled by a variable speed drive that was installed as part of the project—the value given by equation 8 (subsection 32(1)); and
 (b) if the motor is controlled by a multi‑speed control or a switching control that was installed as part of the project—the value given by equation 9 (subsection 32(2)); and
 (c) otherwise—1.
Hi is the heat load adjustment for the fan, and is:
 (a) for a ventilation fan—0; and
 (b) for a refrigeration fan that is:
 (i) a condenser fan, or another fan that removes hot air from the condenser—0; and
 (ii) unless subparagraph (iii) is applicable—an evaporator fan, or another fan that circulates cool air, that services:
 (A) a refrigerated display cabinet—0.44; or
 (B) a freezer cabinet—0.44; or
 (C) a walk‑in cool room—0.44; or
 (D) a cold storage warehouse—0.26; and
 (iii) a fan that is installed in a cooling tower, where the primary purpose of the cooling tower is to provide heat rejection for a refrigeration system—0.
Note: When not equal to zero, the heat load adjustment for a refrigeration fan is the inverse of the coefficient of performance. This adjustment provides for abatement as a result of the reduced heat load on the refrigeration system for evaporator fans and other fans that circulate cool air.
DFi is the discount factor for sub‑optimal operation, and is:
 (a) for an axial‑flow fan—0.9; and
 (b) otherwise—1.
ti is the number of days in the reporting period for