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E-1.1, r. 1 - Regulation respecting energy conservation in new buildings

Section 138
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138. When the temperature of the exhaust air exceeds 30 ºC, the sensible heat content of the exhaust air in kilowatts shall be calculated by using the formula:
Cs = Q • c (tc - to)
_______________
1,000 • V
Where
Cs = sensible heat content in KW
Q = rated capacity of the building exhaust air system in L/s
c = specific heat of the exhaust air at exhaust air conditions in kJ/(kg • ºC)
v = specific volume of the exhaust air at exhaust air conditions in m3/kg
te = temperature of the exhaust air before passing through any heat recovery apparatus in ºC
to = outdoor design temperature for heating purposes in ºC.
O.C. 89-83, s. 138.
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