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RISS 인기검색어
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- 저자 : 임병찬(Pyeongchan Ihm) (검색결과 8 건)
- 무료
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Evaluation of Control Methods of Ice Thermal Storage Systems
Pyeongchan Ihm(임병찬),Sang-Jin Lee(이상진) 한국생활환경학회 2006 한국생활환경학회지 Vol.13 No.2
상업용 건물의 공조시스템은 하절기에 건물의 냉방을 위하여 많은 양의 전력의 사용량을 필요로 하며, 미국에서는 하절기동안 60%가 상업용 건물의 냉방용 공조시스템 및 플랜트의 전력사용량을 차지하고 있다. 따라서 전력에너지 사용의 효율성을 높이기 위해서 심야전력을 사용하는 빙축열시스템을 이용할 경우 주간의 최대전력부하를 줄일 수 있으며, 또한 건물의 전력에너지 비용을 크게 줄일 수 있다. 본 논문은 빙축열시스템을 이용하여 냉동기 우선방식, 빙축열시스템 우선방식, 그리고 빙축열시스템의 최적제어 방식을 통하여 전력에너지 사용의 효율적인 제어방안에 관하여 연구하였다. 연구결과, 빙축열시스템을 이용한 냉동기 우선제어방식보다 빙축열시스템의 최적제어를 실시하면 약 16%, 또한 빙축열시스템 우선 방식의 경우는 약 27%의 냉방에너지의 비용을 절약 할 수가 있었다. The HVAC systems require large amount of electrical energy use to maintain cooling setpoint temperature during summertime. Especially, 60% of total energy use in the United States is consumed in operating HVAC systems and plants in commercial buildings during summer. To increase the efficient electrical management ice thermal storage (ITS) systems operated during nighttime can reduce the daytime peak electrical demand and expect the electrical energy cost savings in a building. The purpose of this research is to investigate the effective control method of ITS systems to achieve the potential building energy cost savings. Therefore, conventional ITS control strategies including chiller-priority control and ice storage￢priority control strategies are compared to optimal ITS control strategy. This research concluded that optimal ITS control achieve 16% and 27% higher savings that those obtained by chiller-priority and ice storage-priority control, respectively.
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서울 및 부산지역의 가변 평형점온도에 따른 냉난방도일 산정법에 관한 연구
임병찬(Pyeongchan Ihm),정순성(Soon-Sung Jung),서동현(Donghyun Seo) 대한설비공학회 2014 설비공학 논문집 Vol.26 No.2
In general, building energy performance is evaluated with a detailed transient building energy simulation program. However, energy evaluation tools with the bin method are still used, because of their simple and easy way to calculate building energy performance, without reducing their precision. In this research, several heating and cooling degree day methods are compared, and evaluated with their performance for variable base temperature. This analysis considered about ten years of the continuous outdoor temperature, in the Seoul and Busan areas. It is concluded that the simplified bin method is more or less acceptable for Seoul and Busan, compared with the detailed hourly bin method.
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지그비 메쉬 네트워크를 이용한 대형건물의 실시간 실내 환경 모니터링
임병찬(Pyeongchan Ihm),조성우(Sung Woo Cho) 한국산학기술학회 2023 한국산학기술학회논문지 Vol.24 No.9
사물인터넷 기술의 발전과 함께 블루투스(Bluetooth), 와이파이(WiFi), 지그비(ZigBee) 등 다양한 무선 통신기술들이 개발되어 현장에서 무선 통신모듈과 센서를 결합한 실시간 환경모니터링 방안이 측정에 활용하고 있다. 무선통신 범위도 비교적 넓고 데이터 전송속도도 빠른 와이파이는 실시간 모니터링에 적합하지만 통신모듈의 전력소비량이 상대적으로 크며 무선 통신 네트워크를 구축하는데 필요한 무선 공유기 설치에 따른 어려움이 있다. 본 연구는 대형건물에서 건물 전체를 대상으로 실시간 건물 실내 환경 모니터링이 가능한 무선 통신 센서 네트워크의 성능평가와 효과적인 네트워크 구축방안에 관하여 연구를 하였다. 또한 저전력 지그비 통신모듈과 저가의 아두이노를 활용하여 사물인터넷 시제품을 개발하였다. 이 장치들로 구성된 무선 통신 네트워크를 건물 전체를 대상으로 구축하여 네트워크의 무선 통신성능과 실시간 건물 실내 환경 모니터링의 가능성을 제시하였다. 단일 연결(one-hop)과 다중 연결(multi-hop)에 대한 지그비 통신모듈의 성능을 분석하였으며 다중 연결 상태에서 건물 전체에 대한 지그비 통신의 수신율은 양호한 것으로 나타났다. 대형건물에서 건물 전체를 대상으로 지그비 메쉬 네트워크를 사용한 무선 센서 네트워크를 구축할 수 있을 것으로 사료된다. With the development of Internet of Things (IOT) techniques, several wireless communication technologies such as Bluetooth, WiFi, and ZigBee are being developed and currently applied to a real-time environment monitoring system combined with sensors. A WiFi communication network with broad wireless range and fast baud rate of data transfer rate is suitable for real-time monitoring. However it consumes more power for the communication module and has a difficulty in the installation of a an access point. This study evaluated the performance and the effective layout of a wireless sensor communication network for real-time monitoring of an indoor environment of a whole large-scale building. In addition, an IOT product was developed with a ZigBee module with low power consumption and low-cost Arduino module. The product was utilized to construct a ZigBee-based wireless communication network and used to evaluate the performance of a wireless communication network. One-hop and multi-hop connections of ZigBee communication were analyzed with the variation of horizontal and vertical distance within a whole building. The performance of a multi-hop connection for ZigBee communication was better than one-hop communication regarding on the received signal strength indicator and packet delivery ratio. The suggested ZigBee-based wireless mesh communication network system was applied to a whole large-scale building and is a very effective way to construct a real-time wireless sensor network for monitoring indoor environment conditions.
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조성우(SungWoo Cho),임병찬(PyeongChan Ihm) 한국지열·수열에너지학회 2014 한국지열에너지학회논문집 Vol.10 No.4
This paper is performed to investigate of cooling effect and total enthalpy variation on EAHES(Earth-to-Air Heat Exchanger System) that is buried 3m depth and 60m length. Using EAHES, the reduction of the sensible heat is obviously but latent heat is showed increased trend. Although the outdoor average latent heat accounts for 53.2% of total enthalpy, latent heat of the exit air from EAHES was raised as 58%. For improving cooling effect of EAHES, it has to considered that how to remove the latent heat from EAHES.
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HVAC 실험실에서 공조시스템의 PMV 제어에 의한 에너지 절약효과 연구
문정현(Jung-Hyun Mun),임병찬(Pyeongchan Ihm) 한국생활환경학회 2004 한국생활환경학회지 Vol.11 No.2
An experimental analysis is carried out to evaluate the performance of thermal comfort-based controls compared to temperature-based controls. Predicted Mean Value (PMV) of Fanger model is used to estimate a thermal comfort indicator that can be utilized to control a mechanical cooling system. In this paper, the results of a series of experiments are presented to determine energy savings of thermal comfort-based controls compared to conventional control strategies. It was found that when the PMV is set to 0.5, the thermal comfort-based controls use 10% less energy than conventional controls. The energy savings are reduced to about 7% when the PMV is set to 0.
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건물에너지 성능 분석을 위한 간이 건물에너지 시뮬레이션 프로그램 개발에 관한 연구
박종일(Jong-Il Park),강윤석(Yoon Suk Kang),임병찬(Pyeongchan Ihm) 대한설비공학회 2009 설비공학 논문집 Vol.21 No.1
There are various types of energy simulation tool to predict both thermal load and energy use. However, the problem about these software is that they have too much input variables and need expert with skills to run the simulation. Therefore, the purpose of this study is to develop the thermal analysis simulation program with input variables which eliminates coordinates of building components instead of using full coordinates by using DOE2. Since the simulation engine of the program is DOE2, the validity of S-DOE is performed by comparing peak heating and cooling load results with VisualDOE and annual energy use results with actual energy use of 1996. The results have shown that there are little difference between VisualDOE and S-DOE. Also it showed that there are little difference between actual energy use and S-DOE energy use results. S-DOE took less time to model a building than VisualDOE. These results reveals that the application of S-DOE have potentials in accurately predicting both energy load and energy use of the building and still have an advantage of taking less time to model a building.
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