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병원건물의 환기특성을 고려한 외기전담시스템의 에너지 절감 효과 예측
김민휘(Kim Min-Hwi),김진효(Kim Jin-Hyo),권오현(Kwon Oh-Hyun),석윤진(Seok Yoon-Jin),정재원(Jeong Jae-Weon) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.3
The purpose of this paper is to investigate supply air conditions and energy saving potentials of a dedicated outdoor air system (DOAS) applied to a patient room of health care facilities. The design of HVAC systems for healthcare facilities is a specialized field of engineering. Based on the current health care facilities design satandards, it was assumed that four 25.8m2 unit patient rooms are served by the three different HVAC systems; a constant air volume system(CAV) with fan coil unit(FCU), a variable air volume system (VAV), and a dedicated outdoor air system (DOAS) with fan coil unit (FCU). Control strategies and energy saving potentials of each system were modeled and estimated using the TRNSYS 16 energy simulation program. Annual cooling and heating coil loads and fan energy reduction were calculated. It was found that the DOAS+FCU system can reduce the fan energy consumption over 65% annually compared with the conventional CAV+FCU system. In addition, over 57.5% of annual cooling coil load can be reduced by use of DOAS+FCU system.
외기전담시스템의 병원건물에 대한 적용성 및 냉난방 에너지 절감 효과에 관한 연구
김민휘(Kim Min-Hwi),김진효(Kim Jin-Hyo),권오현(Kwon Oh-Hyun),석윤진(Seok Yoon-Jin),정재원(Jeong Jae-Weon) 한국건축친환경설비학회 2009 한국건축친환경설비학회 논문집 Vol.3 No.4
The purpose of this paper is to investigate supply air conditions and energy saving potentials of a dedicated outdoor air system (DOAS) applied to a patient room of health care facilities. The design of HVAC systems for healthcare facilities is a specialized field of engineering. Based on the current health care facilities design satandards, it was assumed that four 25.8m2 unit patient rooms are served by the three different HVAC systems; a constant air volume system(CAV) with fan coil unit(FCU), a variable air volume system (VAV), and a dedicated outdoor air system (DOAS) with fan coil unit (FCU). Control strategies and energy saving potentials of each system were modeled and estimated using the TRNSYS 16 energy simulation program. Annual cooling and heating coil loads and fan energy reduction were calculated. It was found that the DOAS+FCU system can reduce the fan energy consumption over 65% annually compared with the conventional CAV+FCU system. In addition, over 57.5% of annual cooling coil load can be reduced by use of DOAS+FCU system.
에너지 절약형 공조시스템 별 냉방 운전 특성 및 에너지 절감 효과 비교 분석
김철호(Chul Ho Kim),이승언(Seung Eon Lee),김강수(Kang Soo Kim) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.-
In this study, we conducted EnergyPlus dynamic simulation for the design and selection of energy conservational HVAC Systems. The air-conditioning systems selected for this study are CAV(Constant Air Volume), VAV(Variable Air Volume), UFAD(Under Floor Air Distribution), and Active chilled beam with DOAS(Dedicated Outdoor Air System). We analyzed indoor temperature, relative humidity, supply air flow, cooling energy and CO2 emissions for each HVAC system used during cooling season. For the same indoor setting temperature, CAV’s supply air flow was the highest, and Active chilled beam with DOAS was analyzed as being able to perform air conditioning only with minimum outdoor air volume. VAV and UFAD system operated by varying the supply air volume according to the changing indoor load. Cooling energy was reduced by about 24.8% by applying VAV compared to CAV, and by about 33.9% by applying UFAD, 39.1% by Active Chilled Beam with DOAS. CO2 emissions also showed similar savings as that of cooling energy.
간접식 및 직접식 증발냉각기를 이용한 100% 외기 공조시스템의 에너지 절감효과 분석
김민휘(Kim Min-Hwi),김진효(Kim Jin-Hyo),권오현(Kwon Oh-Hyun),석윤진(Seok Yoon-Jin),정재원(Jeong Jae-Weon) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.4
The main thrust of this paper is to investigate the energy saving potentials of an 100% outdoor air (OA) system integrated with indirect (IEC) and direct evaporative coolers (DEC). For estimating the energy performance of the proposed system, it was assumed that four typical 60m2 classrooms were served by two different HVAC systems; the 100% outdoor air system and the conventional variable air volume (VAV) system. Transient behavior and control characteristics of each system were modeled numerically using a commercial equation solver program. Annual air conditioning and fan energy consumptions were estimated and then the energy saving potentials of the proposed 100% OA system were predicted. It was found that 100% OA system integrated with IEC and DEC would be able to reduce the annual cooling coil load about 16-25% and the annual heating coil load around 80-87% with respect to the conventional VAV system. Consequently, the overall operating energy saving potentials of the proposed system is 21-51%, while it depends highly on the effectiveness of the IEC unit.
증발냉각 기반 전외기 공조시스템의 적정 제어 방법 및 지역별 에너지 절감효과 분석
김민휘(Kim Min-Hwi),김진효(Kim Jin-Hyo),권오현(Kwon Oh-Hyun),석윤진(Seok Yoon-Jin),정재원(Jeong Jae-Weon) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.12
The purpose of this study is to investigate operable controls and energy saving potentials of an 100% outdoor air system integrated with indirect and direct evaporative coolers in eleven major cities in South Korea. It was assumed that three zones in a university campus building are served by the two different HVAC systems; a variable air volume system(VAV), and a 100% outdoor air system integrated with indirect and direct evaporative coolers. After establishing operable control strategies, energy saving potentials of each system were estimated using a simulation model representing each HVAC system. It was found that the proposed system can reduce the cooling and heating coil loads over 30% to 60% annually compared with the VAV system. It was also found that the energy saving potentials of the evaporative cooling based 100% outdoor air system is not very sensitive to the regional weather conditions.
인천국제공항 탑승동에 적용 가능한 적정 공조시스템에 관한 연구
석호태,정만석,김지현,여명석,김광우 대한건축학회 2005 대한건축학회논문집 Vol.21 No.1
Generally, indoor thermal environment control consumes much energy in the building Appropriate performance evaluation of the building and HVAC facilities are achieved by an energy simulation The result Which does the energy simulation of property HVAC system in airport Primary, there seems to be reasonable method which save window conduction loads and solar radiation loads on the element for an energy saving Secondly, According to the existence of contact outside in building Loads, the Important factor of influence is divided into solar radiation, window conduction loads and interior loads(lighting, equivalent, occupancy etc) The last, the result which does the energy simulation of each HVAC system, CAV + V AV System is determined profitably in energy performance