| Title |
Assessment of Winter Ventilation Conditions and Air Exchange Rates in Small-sized Multi-use Facilities using Multiple-formulas Method |
| Authors |
신희원(Shin, Hee-Won) ; 김지민(Kim, Ji-Min) ; 강동화(Kang, Dong-Hwa) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.11.227 |
| Keywords |
Small-sized multi-use facility; Air exchange rates; Ventilation; Multiple-formulas; Tracer gas method |
| Abstract |
This study investigated ventilation conditions during winter in small-sized multi-use facilities and estimated air exchange rates using the
Multiple-formulas method. To examine the ventilation conditions, on-site investigations were conducted at 27 facilities, including 12
restaurants, 12 cafes, and 3 karaoke booths. Air exchange rates were calculated using a mixed-average approach, Multiple-formulas method,
combining formulas that estimate air exchange rates based on occupant-generated CO2 as a tracer gas. The estimated air exchange rates
during winter were 3.47±3.76 h-1 overall, with 4.36±3.92 h-1 for restaurants, 1.76±2.30 h-1 for cafes, and 6.72±4.54 h-1 for karaoke booths.
Among these facilities, 12 facilities (44.4%), fell below the ASHRAE Standard 62.1 ventilation requirements, indicating a need for further
improvements to achieve adequate air exchange rates. The Multiple-formulas method produced air exchange rates estimates comparable to
those reported in similar studies, confirming its reliability. This research contributes to estimating air exchange rates in small-sized multi-use
facilities, where assessment is difficult and provides foundational data to support ventilation standards. |