• 한국환경과학회지
• /
• 제23권11호
• /
• pp.1943-1951
• /
• 2014

In order to clarify the characteristics of Photo-Volatic(PV) power generation over the Korean peninsula with complex terrain, special meteorological observation campaign was carried out for one year from 25 May 2011. Analysis is based on the comparison between observed meteorological elements and PV values generated at rated capacity 200 kW power plants. Solar radiation observed at $15^{\circ}$ inclined surface is 11 % larger than that observed at horizontal surface due to low elevation angel of the sun during winter season. The PV power generation tend to be more similar the variation of inclined surface irradiance than horizontal surface irradiance. Increasing air temperature often induce disturbance of the PV power generation. However, the higher the air temperature in winter season, the higher PV power generation because the PV module may be more activated at higher air temperature. PV generating efficiency tends to be conversed the value of 15%.

• Journal of Advanced Marine Engineering and Technology
• /
• 제32권3호
• /
• pp.387-393
• /
• 2008

This paper has dealt with the probability of oyster shell desiccant cooling system driven by renewable energy of photo-volatic effect with fundamental experiment. The test materials for desiccant are activated charcoal, silica-gel, hi-dry, and oyster shell. The experiments were mainly performed with focusing on the observation of surface features, adsorption amounts of the adsorbent species, and the effect of temperature. Oyster shell has sufficient probability for using as desiccant in a air-conditioning system. Moreover, the heat releasing device would be attached in the system, the system based with oyster shell can be operated with high efficiency.

• Journal of Advanced Marine Engineering and Technology
• /
• 제34권5호
• /
• pp.625-631
• /
• 2010

최근 몇 년간 에너지 위기에 대한 우려가 급격히 증가하고 있으며, 방대한 에너지소비에 따른 환경오염도 큰 문제로 대두되고 있다. 사회적으로 에너지 위기가 고조되고 있는 가운데 새로운 에너지나 신재생에너지에 대한 관심이 증가하고 있다. 본 연구는 이러한 문제를 해결하는 하나의 수단으로 태양에너지를 적극적으로 이용하기 위한 태양광발전시스템의 발전효율을 상승시키는 일환으로 대류열전달의 향상을 도모한 실험을 수행한 결과를 정리한 논문이다.

• 한국환경과학회지
• /
• 제27권3호
• /
• pp.227-231
• /
• 2018

We studied the warming effect induced by Photovoltaic(PV) power plants in rural areas during summer daytime using a simple analytical urban meteorological model. This analysis was based on observed meteorological elements and the capacity of the PV power plant was 10 MWp. The major axis length of the PV power plant was assumed to be 1km. Data of the necessary meteorological elements were obtained from a special meteorological observation campaign established for a over a PV power plant. We assumed that the wind flowed along the major axis of the PV power plant(1 km). As a result, the air temperature on the downwind side of the PV power plant was estimated to invrease by about $0.47^{\circ}C$.

• 한국산학기술학회논문지
• /
• 제11권7호
• /
• pp.2565-2569
• /
• 2010

실리콘 태양전지 셀을 제작하고 효율을 측정하는데 있어 texturing 효과에 대하여 상관성을 조사하였다. Texturing은 $HNO_3$, KOH, NaOH를 각각 사용한 IPA혼합 에칭용액을 만들어서 샘플을 제작하였다. 셀의 분석은 FTIR 과 XRD를 이용하였으며, 실리콘 태양전지 셀의 효율과 화학적인 특성 사이의 상관성을 조사하였다. FTIR 데이터의 950~1350 $cm^{-1}$ 영역에서 픽의 생김새와 셀 표면의 반사도 사이에는 상관성이 있으며, 픽의 쪼개짐이 많으면 표면에서 결합의 상호작용이 활발하지 않다는 것을 의미하며 이러한 표면에서 반사가 잘 일어나지 않으면서 효율이 증가하는 것을 확인하였다.