Yassine Allani's research while affiliated with Eawag: Das Wasserforschungs-Institut des ETH-Bereichs and other places

Publications (14)

Article
This paper introduces a novel concept of mini-hybrid solar power plant integrating a field of solar concentrators, two superposed Organic Rankine Cycles (ORC) and a (bio-)Diesel engine. The Organic Rankine Cycles include hermetic scroll expander-generators1 and the sun tracking solar collectors are composed of rows of flat mirror bands (CEP) arrang...
Article
Au soleil de Californie, des centrales solaires à capteurs cylindro-paraboliques produisent du courant électrique depuis des années. Une huile caloporteuse est chauffée à 400°C, puis utilisée pour produire de la vapeur qui entraîne des générateurs. C’est l’une des techniques de conversion du rayonnement solaire en électricité qui rencontre le plus...
Article
Full-text available
p>Hybrid solar thermal power plants (with parabolic trough type of solar collectors) featuring gas burners and Rankine steam cycles have been successfully demonstrated by California's Solar Electric Generating System (SEGS). This system has been proven to be one of the most efficient and economical schemes to convert solar energy into electricity....
Article
Full-text available
This paper presents the analysis of an original design of small hybrid solar plant using Organic Rankine Cycles with hermetic scroll expander- generators. The hot supply is provided from vacuumed collector tubes along the focal line of solar concentrators made of mirror bands fixed on a plane surface (CEP). The plant is integrated with a cogenerati...
Article
A multicriteria decision support system has been developed to evaluate alternatives for sustainable and integrated energy centres for rural development in the Mediterranean area. The search for the most suitable solution for a fixed site is a complex problem, due to the variety of the plausible alternatives, the changing points of view and the dive...
Article
The integration of a solar collector field generating steam into a conventional combined cycle in order to partially replace the fossil fuel required by the latter results in a substantial reduction in greenhouse gases, in an increase in the return on investments associated with the solar field and in an almost complete elimination of the need for...
Article
Le projet POLEDURME apporte une nouvelle approche méthodologique pour la réalisation de sites intégrés répondant à des critères de durabilité dans des zones arides et semi-arides. Par l'intermédiaire d'un partenariat pluridisciplinaire, de formation, d'outils informatiques performants (système d'information géographique, méthode du pincement, optim...
Article
Le projet POLEDURME apporte une nouvelle approche méthodologique pour la réalisation de sites intégrés répondant à des critères de durabilité dans des zones arides et semi-arides. Par l'intermédiaire d'un partenariat pluridisciplinaire, de formation, d'outils informatiques performants (système d'information géographique, méthode du pincement, optim...

Citations

... The rapid growth of the world's population, industrialization, and development in developing countries have all contributed to a significant increase in global energy consumption [1,2]. The solar power market has grown rapidly in the past decade [3,4] and is the fastest growing renewable energy technology both in the US and globally [5][6][7][8]. ...
... Ideally, ISCCs exhibit both the CO 2 emissions reductions of solar thermal energy with the flexibility and dispatchability of a natural gas combined cycle (NGCC) [5,7,8]. While several studies have examined the benefits of individual ISCC systems [9][10][11][12][13][14], or even compared several system designs [15][16][17][18][19], optimization work remains scarce. Some initial optimization work [20,21] has demonstrated tradeoffs between capital investment and long-term economics, but did not consider dynamic system operations or detailed system design. ...
... The structure of the cycle has a single volumetric turbine stage involving an organic fluid with the high temperature kept constant while the lower temperature is variable. The condensation of the organic fluid does not take place at ambient temperature but at a temperature higher than that required by the absorption machine [1,3,4,5] and it is also subject to the average ∆ ℎ . The efficiency can be expressed by the following model where parameters and 1 are determined experimentally. ...
... The concept was initially proposed by Luz Solar International (Johansson et al. [1]). Early studies were based on the PTC technology of SEGS (Solar Energy Generating Systems) plants installed in California [2][3][4]. At the beginning of the century, the research in the field spread out as a result of the installation of some plants thanks to subsidies provided by the agency Global Environment Facility to countries such as Egypt, Morocco, India and technologies. ...
... ț the SEGS power plants in California [4] with electric powers between 30 and 80 MWe, which are based on cylindro-parabolic concentrators with additional fossil fuel burners or natural gas boilers to supply a steam cycle, ț the Integrated Solar Combined Cycle Power System (ISCCS), such as PAESI [5][6][7] or ISSCS-Nevada, USA [8,9] based on efficient combined cycles with a better fuel conversion efficiency and reduced electricity production costs (by as much as 42%) compared to the present SEGS plants [4], and ț concepts using high efficiency parabolic solar concentrators, delivering solar heat at an exergy level sufficient to preheat or to fully heat the compressed air of the gas turbine of a combined cycle or to supply heat for endothermic fuel reforming [10]. ...