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E-1.1, r. 1 - Regulation respecting energy conservation in new buildings
Section 137
Disposition versions
137. When the temperature of the exhaust air does not exceed 30 ºC, the sensible heat content of the exhaust air in kilowatts shall be calculated by using the formula:
Cs: 0.00123 Q (te - to)
Where
Cs: sensible heat content in kW
Q: rated capacity of the building exhaust air system at normal exhaust air temperature in L/s
te: temperature of the exhaust air before passing through any heat recovery apparatus in ºC
to: outdoor design temperature for heating purposes in ºC.
