Document ID: chunk:federal_register_of_legislation:F2015L01712:clause:7_29
Version: federal_register_of_legislation:F2015L01712
Segment Type: clause
Provision Reference: sch 7 cl 29
Character Range: 42943–43618

29  Equation 5—overall driven fan efficiency of installed HE fan (𝜂i) for components tested as installed
  For equation 3, if paragraph (a) of the definition of 𝜂i is applicable, 𝜂i is worked out using the equation (equation 5):
  where, for the ith installed HE fan:
PU,i is the fan air power or fan static air power (as appropriate) in kilowatts, as measured in testing using the same drive, motor and transmission as the fan as installed.
PE,i is the motor input power of the fan in kilowatts, as measured in testing using the same drive, motor and transmission as the fan as installed.
Note: For the testing for PU,i and PE,i, see paragraphs 16(4)(b) and (5)(d) and (e).