A Strategies to Improve the Natural Ventilation Performance at Underground Parking Lot in Multi-Residential Buildings

Abstract

Energy efficiency and indoor air quality have become main issue to develop healthy and sustainable building in these days. As an effort to reduce the energy consumption in multiresidential building, many attempts as like passive design strategies and renewable energy as well as active control method are tried. However, underground parking lot in multi-residential building seldom adopt the sustainable strategies and only mechanical system is installed as usual. Moreover, the mechanical system installed in underground parking lot is rarely operated due to the electric demand for operation after completion.In this study, as an energy efficient measure, natural ventilation system using stack effect as a driving force for underground parking lot will be proposed and the performance of the suggested system will be analyzed by simulation method.

Study of Securing Required Ventilation Rates and Improving Mechanical Ventilation Systems for Underground Parking Lots

“…It is necessary to introduce natural ventilation for underground parking lots to satisfy legal requirements and save maintenance costs. Previous studies [2][3] , however, have not reviewed parking sizes that could satisfy the legal standards with natural ventilation alone. Moreover, studies on mechanical ventilation using jet fans 7), [12][13] have also not reviewed the relationship between the jet fan, the air supply opening, and the exhaust air openings.…”

“…Unlike large underground parking lots, people tend not to invest in mechanical ventilation equipment for small and medium-sized underground parking lots. In many cases, building owners and occupants even avoid using installed ventilation equipment to save building maintenance costs 3) . According to Korea's "Parking Lots Act" and the "Indoor Air Quality Control in Public Use Facilities, etc.…”

“…Generally, underground parking lots are susceptible to the accumulation of various pollutants produced by cars because of the enclosed space, such as carbon monoxide (CO), carbon dioxide (CO 2 ), nitrogen oxide (NOx), and volatile organic compounds (VOC) 1) . In the case of large underground parking lots, the planning of natural ventilation [2][3][4][5] and the review of mechanical ventilation [6][7] using jet fans have been conducted in order to secure indoor air quality. In these parking lots, the degree of indoor air pollution has been studied in detail through onsite measurements [8][9][10][11] .…”