1 / 13

Photovoltaic Energy Systems: Summary Research Review

Photovoltaic Energy Systems: Summary Research Review. Louise F. Goldberg Ph.D (Eng) Director, Building Physics and Foundations Research Programs, University of Minnesota January 10, 2008. College of Design Energy Systems Design Laboratory: Solar/Hydrogen/Fuel Cell Plant.

andrew
Download Presentation

Photovoltaic Energy Systems: Summary Research Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Photovoltaic Energy Systems:Summary Research Review Louise F. Goldberg Ph.D (Eng) Director, Building Physics and Foundations Research Programs, University of Minnesota January 10, 2008

  2. College of Design Energy Systems Design Laboratory: Solar/Hydrogen/Fuel Cell Plant

  3. Electrolysis power source: PV only • Parasitic power source: grid only • Average solar power: 2.4kW • Average solar effectiveness: ~53% (average power / rated power during insolation periods) • Operating time: 73.9 hours • Amount of hydrogen generated: 13.6 lb (2413 scf) • Total electrical energy generated:  74.2kWh • Parasitic energy consumption (pumps, deionizer, electrolyser):  45.7kWh • Net energy generation:  28.5kWh • Net efficiency: 12.8% Solar/Hydrogen/Fuel Cell Plant Performance Certification

  4. Sanyo HIT Photovoltaic module temperature dependenceCell efficiency=18.7% Module efficiency=16.8%(manufacturer’s data)

  5. Elec eff=9.1% Therm. Eff=47.8% Net eff.=56.9% PVTWINS (Netherlands) Hybrid Thermal/PV Solar Collector(manufacturer’s data)

  6. Hybrid Thermal/PV with air as the heat transfer fluidTiwari A, Sodha MS et al. Solar Energy Materials & Solar Cells, v 90, pp 175-189, 2006

  7. CONCLUSION: Increase in overall efficiency of hybrid thermal/PV system of 18% (12% PV alone to 30% hybrid)Tiwari A, Sodha MS et al. Solar Energy Materials & Solar Cells, v 90, pp 175-189, 2006

  8. Simulation configuration of hybrid PV/thermal collector with water as the heat transfer fluidChow TT. Solar Energy, v. 75, pp143-152, 2003

  9. h=absorber plate/PV plate convective coefficient c=bond conduction coefficient Variation of thermal and electrical efficiencies with mass flow rateChow TT. Solar Energy, v. 75, pp143-152, 2003

  10. C A Electricity distribution buss HeatExchange Intermediatethermal storage Heat Pump Water Heater Heat Pump B Available Waste Heat 4.2 G/M Pump Manifold Pump Insulated ThermalStorage 35 – 40 F 100 Gal 100 Gal 100 Gal 100 Gal HESS Phase II 200’

  11. HESS phase II laboratory plant

  12. COP versus cogenerated heat temperature:COP of heat pump increased by ~50%

More Related