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후면 환기형 BIPV 시스템의 레이놀즈수에 따른 전력 및 열성능 특성에 관한 해석적 연구
박준언(Jun Un Park),서항석(Hang Suk Suh),이성주(Sung Joo Lee),최윤식(Yun Shic Choi) 대한설비공학회 2020 설비공학 논문집 Vol.32 No.7
The purpose of this study was to analyze the electrical and thermal characteristics of the various types of ventilating BIPV systems. Compared with the conventional top and down block off type, the top and down open BIPV system using natural stack effect and mechanical ventilating type has potential to improve the conventional block off type BIPV systems’ in-site various problems like PV cell high temperature. These kinds of conventional block off BIPV have low efficiency power production and shut-off at the junction box for high humidity ratio environment condition. Hence, it is critical to compare the PV cell temperature, efficiency, and power production between the mechanical ventilating type BIPV and the conventional block off and natural ventilating type BIPV system. For this purpose, the IPMVP OPTION D analytical program TRNSYS and the type 567 model based on the Sandia model were used and the PV cell temperature, PV electricity efficiency, and BIPV system useful energy rate were estimated with different Reynolds number cases, such as the natural ventilation and the forced mechanical ventilation flow. As for results, first at the BIPV electrical point of view, the Reynolds number increasing led to lower PV cell temperature, higher PV efficiency, and higher PV power production. Especially, the maximum BIPV cell temperature occurred at 12 am on October 3. At that time, at each case-1 (Reynolds number 0) and case-9 (Reynolds number 30,304), the respective PV cell temperature value showed 67.6℃ and 36.3℃, respectively, and the corresponding PV efficiency indicated 8.0% and 12.3%, respectively. The individual PV production power value marks were 59.5 kW and 91.9 kW. Second, at the PV thermal view point, increasing Reynolds number induces more annually BIPV building heating useful energy. Particularly at each case-1 (Reynolds number 0) and case-9 (Reynolds number 30,304), the respective BIPV building heating useful energy showed 0 kWh/yr and 7,514 kWh/yr.
건축물 통합형 지열원 히트펌프 냉난방시스템의 년간 동적 성능평가 프로그램 개발에 관한 연구
박준언(Jun Un Park),김선하(Sun Ha Kim),이창근(Chang Kun Lee),김광호(Kwang ho Kim),서항석(Hang suk Suh) 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6
This study is concerned about developing GSHPS.EXE, which is executable type tool and created based on TRNSYS and TRNSED program. This GSHPS.EXE is aim to evaluate SPF(Seasonal Performance Factor), ESE(Energy Self Efficiency) value. These values are annual transient thermal performances of building integrated geo-thermal heat pump system. These values are key factors, which are used to improve flaw of geo-thermal utilization review procedures and forms, and evaluate ESE of ZEB(Zero Energy Building). In this paper, firstly the GUI(Graphic User Interface) of GSHPS.EXE program is explained and secondly three different heat pump performance data are introduced. With using this GSHPS.EX program, parametric studies of each other different heat pump performance data are completed. The results of high, medium and low performance of heat pump unit applied in this parametric study as follows; 1) The difference of annual evaporator absorbed energy and condenser rejected energy of three different heat pump performance is very small, and may be negligible. But 2) The discrepancy of annual compressor utilized electrical energy of three different heat pump performance is very large, and should be considerable. Hence, 3) The disparity of annual summed compressor utilized electrical energy value and SPF value of three different heat pump performance is very considerable. Moreover 4)ESS value calculated based on annual net energy production value and annual building energy requirement load is different each other.
UTC Solarwall 건축물 통합시스템 년간 에너지 성능평가 Simulation 기술에 관한 연구
박준언(Jun-Un Park),이의준(Eye-Joon Lee),정모(Mo Chung) 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.9
UTC(Unglazed Transpired Collector) Solarwall Solar Air Heating(SAHS) systems have unique advantages for space heating and tempering ventilation air over the conventional collector system such as flat plate collector and vacuum collector. SAHS can improve radiation loss due to nonglazed component and convectional loss due to enhanced plate surface configuration. Heating energy and its equivalent green house emission performance can be improved from the use of this solar air heating system. A consistent method to estimate annual EPI(Energy Performance Index), energy savings per unit area, has been required to be implemented in many IPMVP(International Performance Measurement Verification Protocol) and ESCO(Energy Service Company)project. This study is to develop a simulation and verification method to estimate the annual energy savings in future ESCO solar wall project.
강병찬(Kang, Byung-Chan),박준언(Park, Jun-Un),이철우(Lee, Chol-Woo),송윤호(Song, Yoon-Ho) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.11
Alluvium is sedimentary stratum and composed of gravel, sand, silt, clay. Permeability of alluvium is the higher. If alluvium have lots of aquifer, will be of great use heat source and heat sink of heat pump. Alluvium aquifer contain the thermal energy of surrounding ground. Also geothermal heat pump using alluvium aquifer reduce expenses than general geothermal heat pump, because geothermal heat pump using alluvium aquifer make use of single well. In this study geothermal heat pump using alluvium aquifer was installed and tested for a building. The heat pump capacity is 30USRT. Temperature of ground water is in 12{sim}17?C annually and the quality of the water is as good as living water. The heat pump cooling COP is 4.4 ~ 4.7. The system cooling COP is 3.25 ~ 3.6. This performance is as good as BHE type ground source heat pump.
지열원식 냉난방 히트펌프 시스템의 상태 감시 및 열 성능 평가 기술 개발
구경완(Kyung-Wan Koo),박준언(Jun-Un Park),강병찬(Byung-Chan Kang),김일중(Il-Jung Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.4
본 연구는 지열원식 냉난방 히트펌프 시스템의 상태를 실시간으로 감시하고 열 성능을 실시간으로 평가할 수 있도록 한 지열원식 냉난방 히트펌프 시스템의 상태 감시 및 열 성능 평가 방법에 관한 것으로서, 이러한 본 연구는, 프로그램 실행을 통하여 측정 간격이 설정되고, 다이얼로그 박스 상에서 시스템 개요, 공사개요, 히트펌프설비개요, 지열루핑 설비개요, 버퍼탱크, 건물개요 등을 입력받은 후 시스템의 개통도 이미지 파일 프로그램 로딩과 각종 계측기를 통해 전기적인 데이터의 취득 기능 등의 데이터측정 준비를 위한 기본 제1단계와; 취득된 전기적인 데이터를 물리 신호로 변환한 후 기본 데이터 산정하고 결과를 도시하는 "시스템 실시간 작동 상태 감시" 기능의 제2단계와; 기본 순간치 데이터를 근거로 "시스템의 열성능 평가 변수 값 산정과 결과"를 도시하는 제3단계와; 2단계에서의 기본 데이터와 3단계에서의 열성능 평가 변수 값을 후처리용 데이터 파일로 저장하는 제4단계와; 현장에 설치된 지열원식 히트펌프 시스템의 상태를 TCP/IP 프로토콜을 활용하여 원격지(본사)에서 IP 접속을 통하여 원거리 원격 작동상태 감시 기능 및 제어를 수행하는 제5단계를 수행하게 된다.