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상용차용 열전소자 방식 무시동 냉난방시스템의 성능에 관한 연구
양동욱(Donguk Yang),백일현(Ilhyun Baek),박경민(Kyoungmin Park),노윤식(Younsik Ro),김무성(Moosung Kim),김상우(Sangwoo Kim) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Independent air-conditioning and heating system for commercial vehicles is possible an cooling and heating environment by battery power without mechanical elements and has the important advantages which reduced fuel-price, minimized environmental pollution caused by emissions. In this study, the voltage and current of thermoelectric module, inside & outside temperature of cabin and internal & external temperature of cooling and heating system were measured after setting up anti-start air conditioning system using the thermoelectric element in the real operating condition. In experimental results, when it is measured and analyzed output voltage and current up to cutoff voltage, it is shown that the capacity of battery power is required approximately two times.
Donguk Yang(양동욱),Dohyung Jang(장도형),Changheon Kim(김창헌),Sanggyu Kang(강상규),Sukho Lee(이석호) 한국신재생에너지학회 2021 한국신재생에너지학회 학술대회논문집 Vol.2021 No.7
Hydrogen could play a significant role in low-carbon future as an energy carrier that can be easily stored and transported across the transport, heat, industry, and electricity sectors. As we know, the Power-to-Gas concept, based on water electrolysis using electricity coming from Renewables is the most GHG-free approach. However, Green hydrogen is now much more expensive than other energy resources. This is why this paper focuses on analyzing the economic value, especially regarding solar power energy. Commercial solar power system and wind power system are investigated in this study. And the levelized cost of hydrogen (LCOH) is used a key indicator to account for the total economic value of combined system. The result represents to set for the affordable price of REC prices.
Review on Operational Research of Green Hydrogen Production with Solar Power System
Donguk Yang(양동욱),Seok-il Go(고석일),Jaehoon Jung(정재훈),Changheon Kim(김창헌),Sukho Lee(이석호) 한국신재생에너지학회 2021 한국신재생에너지학회 학술대회논문집 Vol.2021 No.7
Hydrogen plays an important role not only in the low-carbon future but also in the integration of various energy sectors such as transportation, heat, industrial sectors. Power-to-Gas (PtG) is the conversion of electrical energy into chemical energy (gas) by water electrolysis. Generally, the excess renewable electricity is used by the electrolyzer, which is called green hydrogen, is to produce oxygen and hydrogen which can be used in many ways. However, there are not much research data on hybrid system operation in domestic. In this study, the main previous arts regarding the solar power system are reviewed.