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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
221

Infrared furnace emitter diffusion for solar cells /

Voyer, Catherine, January 1900 (has links)
Thesis (M. App. Sc.)--Carleton University, 2003. / Includes bibliographical references (p. 112-118). Also available in electronic format on the Internet.
222

Characterization of radiation damage in multi-junction solar cells using light-biased current measurements /

Korostyshevsky, Aaron. January 2008 (has links)
Thesis (M.S.)--University of Toledo, 2008. / Typescript. "Submitted as partial fulfillments of the requirements for the Master of Science Degree in Physics." "A thesis entitled"--at head of title. Bibliography: leaves 41-42.
223

Characterization of key performance parameters in dye sensitized solar cells using a designed experiment

Hamrick, Todd Robert. January 2008 (has links)
Thesis (M.S.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains v, 37 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 33-37).
224

Improving battery charging with solar panels dissertation /

Boico, Florent Michael. January 1900 (has links)
Thesis (Ph. D.)--Northeastern University, 2008. / Title from title page (viewed June 24, 2009). Graduate School of Engineering, Dept. of Electrical and Computer Engineering. Includes bibliographical references (p. 205-213).
225

Solar power for deployment in populated areas a thesis /

Hicks, Nathan. Baltimore, Craig Victor. January 1900 (has links)
Thesis (M.S.)--California Polytechnic State University, 2009. / Title from PDF title page; viewed on September 23, 2009. Major professor: Craig Baltimore, Ph.D. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree [of] Master of Science in Architecture with a Specialization in Architectural Engineering." "June 2009." Includes bibliographical references (p. 65-67). Also available on microfiche.
226

Improving direct solar radiation in complex building envelopes with a computational genetic algorithm

Fernandes, José Maria Veiga, January 2007 (has links)
Thesis (Ph. D.)--University of California, Los Angeles, 2007. / Vita. Includes bibliographical references (leaves 177-182).
227

Solar-assisted refrigerant-filled collector heat pumps

O'Dell, Michael P. January 1982 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1982. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 131-132).
228

Optimal design and strategy for the SolUTra

Mocking, Ceriel. January 2006 (has links) (PDF)
Thesis (M.S.)--Universiteit Twente, 2006. / Title from title screen. "January 2006." "MSc report." Description based on contents viewed Dec. 28, 2006. Includes bibliographical references (p. 121-123).
229

Estimativa da irradiação total sobre uma superfície inclinada a partir da irradiação global na horizontal /

Scolar, José, 1947- January 2003 (has links)
Orientador: Dinival Martins / Resumo: Neste trabalho, realizou-se um estudo de modelagem da irradiação total que incide sobre uma superfície inclinada, com face voltada para o Equador, e com inclinação de 22,85º, igual a da latitude local. Foram testados 7 modelos, existentes na literatura, utilizando partição diária de energia. Os modelos de Temps & Coulson, Klucher e circunsolar, apresentam os piores desempenhos e não devem ser utilizados na estimativa da irradiação total diária em Botucatu, por outro lado os modelos de Liu & Jordan, Hay, Perez et al. e Reindl et al., são similares entre si, e apresentam boa concordância quando comparados com os dados observacionais, sendo o modelo de Hay ligeiramente superior aos outros. O propósito deste trabalho é obter um modelo que utilize somente a irradiação global medida na superfície horizontal para estimar a irradiação total na superfície inclinada. Para tanto, os modelos de estimativa foram modificados de duas maneiras diferentes. Na primeira, a irradiação difusa foi estimada em função da irradiação global, através do ajuste empírico utilizando a técnica de regressão linear, na forma Kd = f (Kt) , fração da difusa contida na global (Kd ), com o índice de claridade (Kt ), nesse caso, o melhor ajuste é dado por um polinômio de 4º grau Kd = 0,993 + 0,178Kt - 0,945Kt2 - 4,712Kt3 + 4,891Kt4 . Na Segunda modificação, a irradiação direta KBH , fração da irradiação direta contida na irradiação global, foi ajustada através da técnica de regressão linear, em função do índice de claridade, na forma KBH = f (Kt ) , nesse caso o melhor ajuste foi linear, obtido para intervalos específicos de Kt , KBH = 0 para Kt £ 0,25 , e KBH = -0,386 +1,572Kt para Kt >0,25. Os resultados obtidos com essas modificações mostram que os modelos têm melhores... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: A modelling study of the total irradiation reaching a tilted surface facing towards the equator at tilt same of local latitude of 22,85º,, is presented. In this study seven total irradiation incident on a tilted surface estimate models were tested and compared among them, using the daily partitioning energy. Temps & Coulson, Klucher and circumsolar models showed very poor results, and it is suggested that they should not be used to estimate the daily total irradiation for the Botucatu region. On the other hand the Liu & Jordan, Hay, Perez et al. and Reindl et al. models have shown similar performance and presented a good agreement with the observational data. The Hay model however produced better irradiation estimates. The aim of this study is examine and improved irradiation estimative model for tilted surface knowing only the global irradiation measured at horizontal surface. In order to achieve this, two modifications were made on those models mentioned above. The first modification consisted to apply empirical functions to determine the diffuse irradiation by the global radiation measurements. These empirical functions were tuned using the regression linear thecnique, the fraction of the diffuse irradiation (Kd ) from the global irradiation, was correlationed with the clearness index (Kt ). In this case the highest correlation found was, Kd = 0,993 + 0,178Kt - 0,945Kt2 - 4,712Kt3 + 4,891Kt4 a fourth order polynomial function. In the second modification the fraction of the direct irradiation KBH from the global irradiation was correlationed assuming a linear correlation at given intervals of Kt : KBH = 0 for Kt £ 0,25 , and KBH = -0,386 + 1,572Kt for Kt >0,25 otherwise. Model results showed the empirical relationship KBH = f (Kt ) , present better results and the Hay model presented a better performance compared with others models for the... (Complete abstract, click electronic address below) / Doutor
230

Produção de gelo a partir da radiação solar empregando o sistema água-amônia como absorvente-refrigerante

Mello, Pedro Barbosa January 1980 (has links)
Foi projetado e construido um equipamento de refrigeração por absorção intermitente, com a utilização da mistura água-amônia, para produzir gelo. Tem-se como fonte de calor a energia solar, obtida com coletores concentradores de párabola composta. O trabalho envolve vários assuntos; foram descritas analiticamente as propriedades gerais da mistura a b s o mte- refrigerante , e analisados experimentalmente os parametros de real significado no desempenho dinâmico e.funcionamento, tais como, evaporação, candensação e absorção, bem c2 mo as relações existentes entre eles. De modo mais completo, foram avaliadas a eficácia do sistema e as condições nas quais se pode otimizar o desempenho.A abrangência dos assuntos de forma ampla, tem por finalidade servir de subsidios a futuras pesquisas que venham a ser desenvolvidas nesta área. / A full equipment for intemittent absorption ref rigeration , was designed and constructed by utilizing water plus anmonia mixture to produce the ice. The heat some was solar energy obtained from parabolic compound concentrators type collectors. The objetive of this work were numerous covering from an analytical Zescription o£ the general properties of the refrigerant-absorbent mixture , to determine experime-n tally the influente of the most fmportant parameters on the dynamic behavior characteristics. Such parameters include evaporation, condensation, absorption and relationships among thern. Further a11 conditions w e r e optimized to give the best system efficiency. The wide analysis of this matter was perf ormed with the aim to give origin to other future research lines on this particular area.

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