Impact of demand controlled ventilation on energy saving and indoor air quality enhancement in underground parking facilities

초록

The main thrust of this paper is to verify possibility of indoor air quality enhancement and energy savings potentials in under-ground parking facilities by adopting the demand-controlled ventilation (DCV) strategy based on the real-time traffic load. For applying DCV approaches to under-ground parking facilities, the minimum ventilation rate per a single vehicle was determined. Two different DCV methods; DCV using the real-time vehicle detection system (i.e. VDS-DCV) and DCV based the variation of indoor CO concentration (i.e. CO-DCV) were proposed. By simulating transient ventilation flow rate and the indoor CO concentration variations for each DCV approach using a commercial equation solver program, applicability of the proposed DCV strategies was analyzed. And then a pilot ventilation system was installed in a real under-ground parking lot for verifying the simulation results. It shows that CO-DCV orVDS-DCV may provide significant reduction of fan energy consumption and good indoor air quality compared with the conventional parking facility ventilation approach.

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