| Title |
Control Strategy of Ventilation System with Air Filtration Mode Considering Indoor and Outdoor Air Quality in Residential Buildings |
| Authors |
Youn Hee Choi ; Doo Sam Song |
| DOI |
https://doi.org/10.6110/KJACR.2019.31.12.568 |
| Keywords |
미세먼지; 환기; 공기청정; 수요제어; 제어알고리즘 Particulate matter; Ventilation; Air-filtration; Demand control ventilation; Control algorithm |
| Abstract |
Ventilation is the most effective approach to providing acceptable indoor air quality and increasing the work performance. Under a specific circumstance, outdoor air is clean. However, if the outdoor PM concentration is high, indoor PM concentration can be increased with the operation of a ventilation system. Thus, additional control strategy of the ventilation system is necessary when outdoor PM concentration is high. In this paper, the control strategy to secure indoor air quality and energy saving in residential building ventilation is discussed. The ventilation system with an air filtering mode is suggested and the effects of the control strategy of air cleaning mode are analyzed by simulation on indoor air quality and energy efficiency. It is available to meet CO2 concentration and PM concentration below the standard with the operation of the ventilation system applied suggested control strategy (Case 4). Also the heating energy consumption of Case 4 was reduced 49% compared to Case 1 which operates the ventilation system all time with a constant flow rate (0.5 ACH). Because the suggested control strategy (Case 4) operates at a lower ventilation fan flow rate when outdoor PM concentration is high, it can lead to lower operation frequency of the air-cleaning mode. |