HVAC Operation Schemes and Commissioning Process Resolving Stack Effect Problem and Adjusting According to Changes in the Environment: A Case Study in High-Rise Building in South Korea

Various problems often arise in high-rise buildings during the winter months due to stack effect. In this study, building of interest, located South Korea, was experiencing constant loud noises Thus, we created a noise level reduction plan by creating method for pressurizing zones according outdoor conditions. To discover appropriate pressurization operating modes, applied two-year commissioning process 50-story interest. The 1st- and 47th-floor elevator halls were identified have highest levels all other floors. Prior applying plan, maximum on first floor with HVAC system turned off 85 dB(A) it 70 dB(A). Both values exceeded criteria 57 lobby space commercial building. case 47th floor, 58.7 56.0 dB(A), despite latter having increased airtightness performance preliminary (i.e., operation mode 2). These 48 an hall Following initial data, determined pressurize high/mid-rise air temperature wind velocity conditions, which categorized into four types 4). effect, first-floor hall’s 56.6 meeting criteria, 49.5 still exceeding but insignificant amount. Although utilized resulted favorable results target A, may not be as effective new buildings, changes indoor environment or energy costs maintaining However, purposes resolving believe that took optimize is presented here can existing buildings.