太陽光・熱ハイブリッドパネルの瞬時特性 (数値解析とエクセルギー評価) [in Japanese] Moment performance of Photovoltaic/Thermal Hybrid Panel (Numerical analysis and Exergetic Evaluation [in Japanese]
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Photovoltaic/thermal hybrid panel is a high efficient energy converter which supplies electrical energy and thermal energy from solar energy. In this paper, we clarified characteristics of two types of PV/Ts' change by means of environment condition and fluid flow rate, using numerical analysis. As a result, photovoltaic efficiencies came to 9.61%in PV/T<sub>A</sub>, 10.56%in PV/T<sub>B</sub> respectively at T<sub>c</sub>=25°C, and thermal ones 52.11%in PV/T<sub>A</sub>, 40.14%in PV/T<sub>B</sub> respectively at T<sub>l</sub>=40°C, <i>Irr</i>=800W/m<sup>2</sup>. From this result, we propose some design points to construct the optimum structure of PV/T. Next, we adopted exergetic evaluation to evaluate electrical energy and thermal energy quantitatively. As a result, we could confirm the existence of flow rate maximizing the total efficiency (say optimum flow rate) on some environment condition, and could define the optimum operating condition. Moreover we compare exergetic efficiencies on optimum operating conditions (say max. exergetic efficiency) under various environment conditions with PV and PV/T<sub>A</sub> and PV/T<sub>B</sub>. A rise of max. exergetic efficiency to increasing irradiance came to -3.6%/kW•m<sup>-2</sup>, +3.6%/kW•m<sup>-2</sup>, +1.4%/kW•m<sup>-2</sup> respectively. Nevertheless we could confirm a hybrid-izing merit to high irradiance.
- IEEJ Transactions on Sensors and Micromachines
IEEJ Transactions on Sensors and Micromachines 119(1), 81-87, 1999-01
The Institute of Electrical Engineers of Japan