http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
연상훈(Sang Hun Yeon),이광호(Kwang Ho Lee) 대한설비공학회 2018 설비공학 논문집 Vol.30 No.6
An underfloor air distribution (UFAD) system is an air conditioning system that enables the maintenance of indoor temperature with a relatively small supply-return air temperature gap and at a low supply air flow rate. UFAD offers a variety of advantages compared to conventional overhead systems, including improvements in comfort, health, work efficiency, indoor air quality, and ventilation efficiency for occupants, and improvements in life cycle cost decrease and lay-out flexibility for building services. In addition, using a UFAD system reduces the floor height because the duct space becomes unnecessary. A key factor for the improved energy performance of the UFAD system is stratification, which refers to the inconsistent vertical temperature distribution from the floor to the ceiling resulting from the buoyant effect of air. Stratification plays a critical role in determining the heat, ventilation, and energy performance of a system. However, based on a domestic literature review, research into the stratification of UFAD is insufficient, reflected by a lack of understanding of stratification and a lack of detailed research related to UFAD. Therefore, this study, by using the EnergyPlus simulation and Phi-Gamma formula, aims to assess variations in stratification according to diffuser condition.
단열재별 샌드위치 패널 구조물의 에너지 성능 비교 연구
김태영(Kim, Tae-Young),연상훈(Yeon, Sang-Hun),이길용(Lee, Gil-Yong),여한승(Yeo, Han-Seung),이광호(Lee, Kwang Ho) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2
In this study, the energy performance of the three types (Glass Wool, PIR, Non-combustible EPS) of sandwich panel insulation materials stipulated in KS F ISO 13784-1 was evaluated through EnergyPlus simulation. Before proceeding with load and energy analysis through simulation, a test was conducted to measure the insulation performance (U-value) of three (PIR, Non-combustible EPS, Glass Wool) sandwich panel materials. The insulation material with the lowest heating and cooling load was PIR, and it was confirmed that it was possible to reduce the heating load by 43% and the cooling load by about 39% compared to the case of using Non-combustible EPS.
AHU 고장감지 및 진단을 위한 냉수코일밸브 고착에 따른 열환경 및 에너지 성능 분석
김철호(Kim, Chul Ho),연상훈(Yeon, Sang Hun),이광호(Lee, Kwang Ho) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2
This study simulated chilled water valve stiction (ratio 30, 60%) by EnergyPlus in order to develop a fault detection and diagnosis algorithm for Air Handing Unit (AHU) based on machine learning. The abnormal zone temperature and AHU power consumption generated by the chilled water valve stiction ratio were reviewed. It was determined that the chilled water valve stiction errors reduced the chilled water flow and increased energy consumption through temperature changes at each node point in the HVAC while also creating an unsuitable thermal environment. In the future, we will generate the fault data of various elements of AHU and develop AHU fault detection and diagnosis algorithms through machine learning.