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Indoor and Built Environment
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Development of Analytical Tool for Indoor VOC Concentration Using Enthalpy Changes in New Apartments in Korea

S.K. Pang

Department of Architecture, Kyungmin College

J.S. Lee

Department of Architecture Engineering, Graduate School, Hanyang University

H. Cho

Research & Engineering Division, POSCO Engineering & Construction Co., Ltd, Korea, scho{at}kier.re.kr

J.Y. Sohn

Department of Architecture Engineering, Hanyang University

S. Cho

Building Energy Research Center, Korea Institute of Energy Research, Korea

This study evaluated the indoor air quality in 36 new apartment houses in six big cities in Korea from July 2005 to January 2006. Most of the indoor finishing materials in the new houses were environment-friendly and designated by the Korea Air Cleaning & Researching Association. In the new apartments, which were all built with the same finishing materials, air levels of toluene averaged 1475 µg · m-3 in summer, when there were relatively high temperatures and humidity, and averaged 2711 µg· m-3 in winter. In addition, benzene, ethylbenzene, styrene, xylene, and formaldehyde measured 9.99, 628, 232, 2392 and 951µg·m-3 in summer and 9.99, 628, 232, 2392, and 951µg·m-3 in winter, respectively. Concentrations of volatile organic compounds (VOCs) and formaldehyde were increased as indoor temperature and humidity increased. This study evaluated concentrations of VOCs compounds in a room according to season using enthalpy, which considers two indexes, temperature and humidity. Concentrations of benzene, ethylbenzene, styrene, xylene, and formaldehyde increased with increased enthalpy.

Key Words: Volatile organic compounds • Formaldehyde • Enthalpy • Dry bulb temperature • Relative humidity • Psychrometric chart

Indoor and Built Environment, Vol. 17, No. 6, 552-561 (2008)
DOI: 10.1177/1420326X08097462
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