Documents disponibles écrits par cet auteur

Temperature and irradiance dependence of a dye sensitized solar cell with acetonitrile based electrolyte / Edwin Peng in Transactions of the ASME. Journal of solar energy engineering, Vol. 133 N° 1 (Fevrier 2011) 

Public ISBD [article]  in Transactions of the ASME. Journal of solar energy engineering > Vol. 133 N° 1 (Fevrier 2011) . - 07 p. Titre : Temperature and irradiance dependence of a dye sensitized solar cell with acetonitrile based electrolyte Type de document : texte imprimé Auteurs : Edwin Peng, Auteur ; Halil Berberoglu, Auteur Année de publication : 2012 Article en page(s) : 07 p. Note générale : Solar energy Langues : Anglais (eng) Mots-clés : Dyes  Electrolytes  Solar  cells Index. décimale : 621.47 Résumé : Performance characteristics of an acetonitrile electrolyte based dye-sensitized solar cell were measured experimentally as functions of temperature (from 5 to 50 °C) and irradiance (from 500 to 1500 W m−2). The results indicated two thermal regimes of operation characterized by diffusion and recombination limitation. It was shown that in the diffusion dominated regime the photoconversion efficiency was not a strong function of temperature whereas it decreased significantly with increasing temperature in the recombination dominated regime. Also, it was shown that the recombination rate was not affected significantly by increase in irradiance resulting in an overall larger temperature dependence of cell performance at larger irradiances. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000001 [...] [article] Temperature and irradiance dependence of a dye sensitized solar cell with acetonitrile based electrolyte [texte imprimé] / Edwin Peng, Auteur ; Halil Berberoglu, Auteur . - 2012 . - 07 p. Solar energy Langues : Anglais (eng) in Transactions of the ASME. Journal of solar energy engineering > Vol. 133 N° 1 (Fevrier 2011) . - 07 p. Mots-clés : Dyes  Electrolytes  Solar  cells Index. décimale : 621.47 Résumé : Performance characteristics of an acetonitrile electrolyte based dye-sensitized solar cell were measured experimentally as functions of temperature (from 5 to 50 °C) and irradiance (from 500 to 1500 W m−2). The results indicated two thermal regimes of operation characterized by diffusion and recombination limitation. It was shown that in the diffusion dominated regime the photoconversion efficiency was not a strong function of temperature whereas it decreased significantly with increasing temperature in the recombination dominated regime. Also, it was shown that the recombination rate was not affected significantly by increase in irradiance resulting in an overall larger temperature dependence of cell performance at larger irradiances. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000001 [...]

Temperature fluctuation and evaporative loss rate in an algae biofilm photobioreactor / Thomas E. Murphy in Transactions of the ASME. Journal of solar energy engineering, Vol. 133 N° 1 (Fevrier 2011) 

Public ISBD [article]  in Transactions of the ASME. Journal of solar energy engineering > Vol. 133 N° 1 (Fevrier 2011) . - 09 p. Titre : Temperature fluctuation and evaporative loss rate in an algae biofilm photobioreactor Type de document : texte imprimé Auteurs : Thomas E. Murphy, Auteur ; Halil Berberoglu, Auteur Année de publication : 2012 Article en page(s) : 09 p. Note générale : Solar energy Langues : Anglais (eng) Mots-clés : Biofuel  Bioreactors  Microorganisms  Sensitivity  analysis  Solar  radiation Index. décimale : 621.47 Résumé : This study describes the thermal modeling of a novel algal biofilm photobioreactor aimed at cultivating algae for biofuel production. The thermal model is developed to assess the photobioreactor's thermal profile and evaporative water loss rate for a range of environmental parameters, including ambient air temperature, solar irradiation, relative humidity, and wind speed. First, a week-long simulation of the system has been performed using environmental data for Memphis, TN, on a typical week during the spring, summer, fall, and winter. Then, a sensitivity analysis was performed to assess the effect of each weather parameter on the temperature and evaporative loss rate of the photobioreactor. The range of the daily algae temperature variation was observed to be 12.2 °C, 13.2 °C, 11.7 °C, and 8.2 °C in the spring, summer, fall, and winter, respectively. Furthermore, without active cooling, the characteristic evaporative water loss from the system is approximately 6.0 L/m2 day, 7.3 L/m2 day, 3.4 L/m2 day, and 1.0 L/m2 day in the spring, summer, fall, and winter, respectively. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000001 [...] [article] Temperature fluctuation and evaporative loss rate in an algae biofilm photobioreactor [texte imprimé] / Thomas E. Murphy, Auteur ; Halil Berberoglu, Auteur . - 2012 . - 09 p. Solar energy Langues : Anglais (eng) in Transactions of the ASME. Journal of solar energy engineering > Vol. 133 N° 1 (Fevrier 2011) . - 09 p. Mots-clés : Biofuel  Bioreactors  Microorganisms  Sensitivity  analysis  Solar  radiation Index. décimale : 621.47 Résumé : This study describes the thermal modeling of a novel algal biofilm photobioreactor aimed at cultivating algae for biofuel production. The thermal model is developed to assess the photobioreactor's thermal profile and evaporative water loss rate for a range of environmental parameters, including ambient air temperature, solar irradiation, relative humidity, and wind speed. First, a week-long simulation of the system has been performed using environmental data for Memphis, TN, on a typical week during the spring, summer, fall, and winter. Then, a sensitivity analysis was performed to assess the effect of each weather parameter on the temperature and evaporative loss rate of the photobioreactor. The range of the daily algae temperature variation was observed to be 12.2 °C, 13.2 °C, 11.7 °C, and 8.2 °C in the spring, summer, fall, and winter, respectively. Furthermore, without active cooling, the characteristic evaporative water loss from the system is approximately 6.0 L/m2 day, 7.3 L/m2 day, 3.4 L/m2 day, and 1.0 L/m2 day in the spring, summer, fall, and winter, respectively. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000001 [...]