03/02365 Biomass power cost and optimum plant size in western Canada: Kumar, A. et al. Biomass and Bioenergy, 2003, 24, (6), 445–464
- Publisher
- Elsevier Science
- Year
- 2003
- Weight
- 377 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0140-6701
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✦ Synopsis
respect to external disturbances such as commutation notches and switching transients; and (e) flexibility of control over speed and accuracy. Rate of change of frequency is also directly provided by the estimator, which is a requirement in some system protection algorithms. In a highly polluted environment, the proposed estimator can be set to measure the frequency in few cycles of the signal and with a steady-state error which is limited to 0.02 Hz.
ALTERNATIVE ENERGY SOURCES Bioconversion energy
03102359 A steady state model of gas-char reactions in a downdraft biomass gasifier Giltrap, D. L. et al. Solar Energy, 2003, 74, (l), 85-91. A phenomenological model of downdraft gasification under steady state operation is developed based on previously published values for the reaction kinetics in the reduction zone. The model predicts a product gas with a composition similar to that found experimentally, although the model over-predicts the methane concentration. The accuracy of the model is limited by the availability of data on the initial conditions at the top of the reduction zone. 03/02360 Amorphous silicon based photovoltaics -from earth to the 'final frontier' Yang, J. et al. Solar Energy Materials and Solar Cells, 2003, 78, (IA), 597612. This paper highlights the advances made in amorphous silicon alloy photovoltaic technology leading to large-scale commercial deployment. The paper discusses multijunction devices made on lightweight flexible substrates; various aspects of attaining high efficiency devices are described. The eminent role of the roll-to-roll continuous deposition technique in propelling the technology to global market is elucidated. The logical emergence of this technology as a lightweight solar-power generator for extraterrestrial application is discussed. Results of high specific power under space conditions are presented. The future of the technology in terms of both device efficiency and product efficacy are given.