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Alternative Energy Sources
TLDR
In this paper, the authors proposed to use geothermal energy as an alternative to the established nuclear fission process and showed that the better use of available heat can be obtained by combined heat and power and by total energy plants.Abstract:
Renewable energy sources (wind, wave, solar, tidal) do not employ finite and dwindling reserves of fossil fuel; their technology is costly; and as their availability is subject to the vagaries of weather or the lunar cycle, they cannot fully replace conventional plant. Geothermal energy is a vast resource, often considered as ‘renewable’. Direct-conversion processes not requiring rotating machinery are small-scale and experimental. Nuclear fusion offers an alternative to the established nuclear fission process. Although not strictly ‘alternative’, schemes for the better use of available heat can be obtained by combined heat and power and by total energy plants.read more
Citations
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Journal ArticleDOI
Proportion assessment of combined PV-wind generating systems
A.M. Al-Ashwal,I.S. Moghram +1 more
TL;DR: In this paper, the authors proposed a probabilistic model for the assessment of the optimal proportion of PV to wind generator capacities based on evaluation of costs and loss of load risk (LOLR).
Journal ArticleDOI
Specific wind energy as a function of mean speed
TL;DR: In this paper, the authors compared the Rayleigh distribution and real variable efficiency depending on the mean wind speed in comparison with Betz limits and 100% efficiency, and concluded that the results are about four times higher with the Betz efficiency and seven times higher than with 100% energy efficiency by selected wind speed.
Book Chapter
Simulation support for the formulation of domestic sector upgrading strategies
Joseph Andrew Clarke,Cameron Johnstone,M. Lever,L.B. McElroy,Fiona McKenzie,G. Peart,L.M.R. Prazeres,Paul Strachan +7 more
TL;DR: In this article, the authors describe the application of a building simulation program to construct a decision-support tool for use by policy makers addressing the needs of the Scottish domestic housing sector, and an example given of its use to identify best-value retrofit options while taking factors such as future climate change and improved standard of living into consideration.
Journal ArticleDOI
The cost of photovoltaic cells in South Africa
TL;DR: The current and future costs of photovoltaic cells are estimated and compared with the price of electricity produced by the Electricity Supply Commission (ESCOM) of South Africa as mentioned in this paper.
Journal ArticleDOI
A Benign, Small-scale Power Unit for the Arctic: The Carnot Cycle Concept
TL;DR: In this article, a fuelless modular system operating on the Carnot cycle was proposed to generate small amounts of useful power in polar or subpolar regions during the winter period by placing a heat engine between a large body of water (near 0 degrees C), acting as a heat source, and the atmosphere (near -25 degrees C, acting as heat sink.
References
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Journal ArticleDOI
Electrochromic materials and devices for energy-efficient windows
TL;DR: In this article, inorganic and organic electrochromic materials are discussed in the context of developing a film-based optical shutter for a window application, which allows regulation of conductive and radiative heat transfer rates, with variable optical attenuation.
Journal ArticleDOI
The advantages non-azeotropic refrigerant mixtures for heat pump application☆
TL;DR: In this article, the authors examine les avantages de l'utilisation of melanges non azeotropiques de frigorigenes dans les pompes de chaleur.
Computer Modeling of Scroll Compressor with Self Adjusting Back-Pressure Mechanism
TL;DR: In this paper, a computer model for calculating the performamce of a scroll compressor with a self-adjusting back-pressure mechanism was developed, which gives detailed geometrical and thermodynamic information concerning the internal processes.
Journal Article
Scroll compressor with self-adjusting back-pressure mechanism
TL;DR: The theory used in the model is described, some numerical results of p-v diagram, back-pressure, and the adiabatic efficiency of the machine for several operating conditions are presented.