heating energy

, in relation to a building, means the energy from a network utility operator or a depletable resource (expressed in kilowatt-hours, and calculated using the Building Research Association of New Zealand’s ALF 3, The ‘Annual Loss Factor Method’, A design tool for energy efficient houses (3rd edition, April 2000) or some other method that can be correlated with that manual) needed to maintain the building at all times within a year at a constant internal temperature under the following standard conditions:
(a) a continuous temperature of 20°C throughout the building:
(b) an air change rate of 1 change per hour or the actual air leakage rate, whichever is the greater:
(c) a heat emission contribution arising from internal heat sources for any period in the year of 1 000 kilowatt-hours for the first 50 m2 of floor area, and 10 kilowatt-hours for every additional square metre of floor area:
(d) no allowance for—
(i) carpets; or
(ii) blinds, curtains, or drapes, on windows:
(e) windows to have a shading coefficient of 0.6 (made up of 0.8 for windows and recesses and 0.75 for site shading)

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