Energy Cost of High Ventilation Rates in a Large Office Building in Montreal

Abstract

This paper presents an analysis of the impact of an increase of the air ventila tion rate on the energy cost in a large existing office building in Montréal, based on a computer simulation using the MICRO-DOE2 program. An increase of 3.2% or CAN$ 37,000 in the total annual energy cost could be expected if the ventilation of outside air is increased from the present rate (7.6 1/s/person) to a higher one (10.0 1/s/person), which corresponds to ASHRAE recommendations. By extrapolating this result to the case where the ventila tion rate is increased from 2.4 to 10.01/s/person, the expected increase in the total annual energy cost would be about 10% or CAN$ 117,300. This increase is higher than those previously estimated by other workers.

Keywords

Simulation Ventilation rates ASHRAE Standard 62-1989 Energy costs

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