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CO 2 ‐Based Demand‐Controlled Ventilation and Its Implications for Interior Design
Author(s) -
Lee Seunghae
Publication year - 2012
Publication title -
journal of interior design
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.229
H-Index - 13
eISSN - 1939-1668
pISSN - 1071-7641
DOI - 10.1111/j.1939-1668.2012.01073.x
Subject(s) - ashrae 90.1 , ventilation (architecture) , occupancy , indoor air quality , architectural engineering , post occupancy evaluation , quality (philosophy) , environmental science , engineering , environmental engineering , mechanical engineering , physics , meteorology , quantum mechanics
CO 2 ‐based demand‐controlled ventilation (DCV) is a ventilation method that resets outdoor air supply rates using CO 2 as an operating parameter (ASHRAE, 2007a). Even though CO 2 itself is not harmful, high levels of CO 2 concentration in indoor environments displace oxygen in the air and can cause a deficiency of oxygen for breathing. The most important aspect of CO 2 in DCV is that it is a good indicator of occupancy in indoor spaces. Therefore, CO 2 is an effective parameter for controlling ventilation based on occupancy level. CO 2 ‐based DCV has been increasingly used in recent years to optimize the energy consumption in ventilation systems as technological advances make its implementation more feasible and interest in environmentally responsible building design grows. This study aims to provide information about CO 2 ‐based DCV and suggest implications for interior design practitioners and educators. To achieve this purpose, this study reviewed previous studies and examined the current practices in CO 2 ‐based DCV in order to suggest guidelines for CO 2 ‐based DCV implementation for interior designers. The guidelines focused on proper CO 2 sensor location design, taking into consideration the activities and other equipment in the room. In addition, a study of CO 2 ‐based DCV in the lecture halls of a university campus was conducted. Physical measurements were done in the lecture halls, and trends data were collected from the university's facility management department to compare the measurements. A perceived indoor environmental quality survey was also done to explore the occupants' responses about CO 2 ‐based DCV.