| 주 저자 | Jeong, J.W.* |
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| 공동 저자 | A.S. Choi* and S.T. No.** |
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| 소속 | * Department of Architectural Engineering Sejong University 98 Gunja-Dong Gwangjin-Gu Seoul 143-747 Republic of Korea, ** Department of Architectural Engineering Chungju National University 72 Daehak-Ro Chungju-Si Chungbuk 380-702 Republic of Korea |
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| Abstract | The objective of this paper was to find an effective way of improving demand-controlled
ventilation (DCV) simulation performed under an occupant based ventilation standard
established in many countries. Two attractive DCV approaches, CO2?DCV and RFID?DCV,
were applied to DCV simulations for a theoretical public assembly space served by a dedicated
outdoor air system (DOAS) with an enthalpy recovery device. A numerical model for
predicting the real-time occupant number, required ventilation amount, CO2 and formaldehyde
(HCHO) concentrations under given conditions was developed using a commercial
equation solver program. The current ventilation standard used in Korea was applied as
a case of occupant based ventilation standards. It was found that the current standard
might cause unstable DCV simulation results, especially under CO2?DCV. This is because
the ventilation rate (per person) indicated in the standard is the sum of the outdoor air
required to remove or dilute air contaminants generated by both occupants and the buildings
themselves, and not a pure function of occupant numbers. Finally, it makes DCV control
unstable when ventilation flow is regulated only by the number of occupants. In order
to solve this problem, the current occupant based ventilation standard was modified as a
form of ASHRAE Standard 62.1-2007 showing good applicability to various DCV
approaches. It was found that this modification enhances applicability of the current ventilation
standard to CO2?DCV significantly and can maintain acceptable HCHO concentrations
during the entire time of operation. Fan energy reduction can also be expected from
DCV operations. |
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| Keyword | Demand-controlled ventilation, Indoor air quality, Dedicated outdoor air system, CO2, RFID |
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| 페이지 | pp. 51~62 |
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| 논문 파일 |
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| 게재일시 |
2010-01
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| DOI | - |
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| 학회/저널명 | Simulation Modeling Practice and Theory Vol.18, No.1 |
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| 년도 | 2010 |
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| 추가 문구 | doi:10.1016/j.simpat.2009.09.009 |
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| 등록 일시 | 2025-06-18 13:27:21 |
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