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송두삼 대한설비공학회 2004 설비저널 Vol.33 No.6
실내공기오염 문제가 미국, 유럽, 일본 등 선진국을 중심으로 고조되면서, 최근 국내에서도 이 문제에 대해 적극적으로 논의되기 시작하였으며, 정부관련기관 및 연구기관을 중심으로 대책마련을 위한 관계법령의 정비 및 연구가 활발히 진행되고 있다. 그 구체적인 법령으로 작년(2003. 5. 29)에 환경부에서 고시한 "지하생활공간공기질관리법개정안(다중이용시설 등의 실내공기질관리법)"을 들 수 있으며, 이 법안에서는 실내공기질 유지기준 및 권고기준, 실내 공기질 공정시험법 등에 대해 공고하고 있다. 또한 건축자재에서 발생하는 오염물질에 관해서도 규정을 하고 있다. 이에 국내에서도 생산된 건축자재에 대해 포름알데히드, TVOC 방출강도를 평가, 등급화 하는 인증제도가 도입되어 있으며, 평가/분석을 실시하는 인증시험기관도 이미 몇 군데 지정되어 있는 상태이다. (중략)상태이다. (중략)
송두삼 대한설비공학회 2003 설비공학 논문집 Vol.15 No.6
In order to saving the energy for HVAC system of buildings, utilization of wind-induced cross ventilation is thought to be promising. However, utilization of natural ventilation alone is not sufficient for maintaining the human thermal-comfort such as in hot and humid regions. A hybrid air conditioning system with a controlled natural ventilation system, or combination of natural ventilation with mechanical air conditioning is thought to overcome the deficiency of wind-driven cross ventilation and to have significant effects on energy reduction. This paper describes a concept of hybrid system and propose a new type of hybrid system using radiational cooling with wind-induced cross ventilation. Moreover, a radiational cooling system is compared with an all-air cooling system. The characteristics of the indoor environment will be examined through CFD (Computational Fluid Dynamics) simulation, which is coupled with a radiation heat transfer simulation and with HVAC control in which the PMV value for the human model in the center of the room is controlled to attain the target value.
송두삼 대한설비공학회 2003 설비공학 논문집 Vol.15 No.6
In this paper, a personal air-conditioning system considering the human thermal adaptability is analyzed. Although the conventional personal air-conditioner was proofed to be satisfactory in providing for the thermal comfort, it is being questioned on the term of its energy efficiency. Therefore, it is important and urgent to develop new types of personal air-conditioning system with sustainable control strategy that can ensure energy saving and thermal comfort simultaneously. In this study, we first examined the problems of the conventional personal air-conditioning system with field interview and laboratory experiment in terms of usage, management and thermal comfort, and proposed the energy-saving personal air-conditioning system considering the human thermal adaptation. Then a laboratory experiment was performed to analyze the characteristics of the human thermal comfort under severe indoor thermal conditions, which were controlled using a new personal air-conditioning unit designed according to the proposal. The results help to illustrate the alleviation effect of the new personal air-conditioning system, and indicate that the thermal alleviation time is useful to maintain the thermal comfort with efficient usage of energy.