• Title/Summary/Keyword: 쏠라셀

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Use of Solar Cell and Nanofiltration Membrane for System of Enzymatic $H_2$ Production Through Light-Sensitized Photoanode (광바이오 수소제조 시스템에서의 쏠라셀 및 나노여과 멤브레인 활용)

  • Shim, Eun-Jung;Bae, Sang-Hyun;Yoon, Jae-Kyung;Joo, Hyun-Ku
    • Transactions of the Korean hydrogen and new energy society
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    • v.18 no.2
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    • pp.151-156
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    • 2007
  • Solar cell and nanofiltration membrane were utilized in a system of enzymatic hydrogen production through light-sensitized photoanode, which resembles photoelectrochemical(PEC) configuration. Solar cell uses no additional light energy to increase energy for electrons to reduce protons and for holes to oxidize water to oxygen, and nanofiltration membrane replaces a salt bridge successfully with increased ion transport capability. With this system configuration, optimized amount of enzyme(10.98 unit), and an anodized tubular $TiO_2$ electrode($5^{\circ}C$/1 hr in 0.5 wt% HF-$650^{\circ}C$/5 hr) hydrogen evolved at a rate of ca. $43\;{\mu}mol/(cm^2{\times}hr)$ in a cathodic compartment and oxygen generated at a rate of ca. $20\;{\mu}mol/(cm^2{\times}hr)$ in an anodic compartment. The stoichiometric evolution of gases indicated that water was splitted in the system.

Study on Relation between $H_2$ Evolution and Photoelectrical Properties of Photoanode (광어노드의 수소 제조와 광전기 특성에 관한 상관관계 연구)

  • Bae, Sang-Hyun;Kang, Joon-Won;Shim, Eun-Jung;Yoon, Jae-Kyung;Joo, Hyun-Ku
    • Transactions of the Korean hydrogen and new energy society
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    • v.18 no.3
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    • pp.244-249
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    • 2007
  • The present work considers the concept of enzymatic photoelectrochemical generation of hydrogen through water splitting using a Xe lamp as a source of light. A solar cell was applied to the system in order to shift the level of electrochemical energy of the system, resulting in the rate of hydrogen production at $43\;{\mu}mol/(cm^2{\times}hr)$ in cathodic compartment with an anodized tubular $TiO_2$ electrode(ATTE, $5^{\circ}C$/1hr in 0.5 wt% HF-$650^{\circ}C$/5hr). The trend of the rate of hydrogen production, for the ATTEs with different annealing temperature from $350^{\circ}C$ to $850^{\circ}C$, fairly well coincided with the photoelectrical properties measured by potentiostat. The actual chemical bias through imposition of two electrolytes of different pHs between anode(13.68) and cathode(7.5) was 0.24eV.

A Case Study of the Automatical Blasting Vibration Measuring System Using the Solar Power Supply (태양전지 전원 공급장치를 이용한 발파진동 자동화 계측시스템 운영 사례연구)

  • Yoo, Ji-Wan;Lee, Tai-Ro;Kim, Jung-Ryul;Kim, Young-Suck
    • Explosives and Blasting
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    • v.26 no.2
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    • pp.92-98
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    • 2008
  • Measuring methods of the blasting vibration were generally divided the. manual method and the automatical method. When using the automatical method, field data of the vibration meter can be transferred to a operation computer by using remote equipments. In this study new automatical system using solar power supply is to be introduced. New automatical system is well suited for the field which is difficult to access and is needed frequent measurements of the blasting vibration. And it can make easy to accumulate the data and control the blasting vibration for safe blasting.