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Masi F.,IRIDRA Srl | El Hamouri B.,Institute Agronomique et Veterinaire Hassan II IAV | Abdel Shafi H.,National Research Center of Egypt | Baban A.,TUBITAK - Marmara Research Center | Regelsberger M.,AEE - Institute of Sustainable Technologies
Water Science and Technology | Year: 2010

Concerns about water shortage and pollution have received increased attention over the past few years, especially in developing countries with warm climate. In order to help local water management in these countries, the Euro-Mediterranean Regional Programme (MEDA) has financed the Zer0-m project (www.zer0-m.org). As a part of this project, several constructed wetland (CW) pilot systems with different pre-treatments have been implemented in four Technological Demonstration Centres in Egypt, Morocco, Tunisia and Turkey. The aim of this research was to establish appropriate designs for treatment of segregated domestic black (BW) and grey water (GW). We tested several different multistage CW configurations, consisting of horizontal and vertical subsurface flow CW for secondary treatment and free water systems as tertiary stage. CW removal efficiencies of TSS, COD, BOD5, N-NH4 +, N-NO3, Ntot, total coliforms (TC) were evaluated for each of the implemented systems. The results from this study demonstrate the potential of CWs as a suitable technology for treating segregated domestic wastewater. A very efficient COD reduction (up to 98%) and nitrification (92-99%) was achieved for BW and GW in all systems. CW effluent concentrations were below 15 mg/L for BOD5, 1 mg/L for N-NO3 and 0.5 mg/L for N-NH4 + together with acceptable TC counts. Based on these results, we suggest adopting the design parameters used in this study for the treatment of segregated wastewater in the Mediterranean area. © IWA Publishing 2010.

Wallner G.M.,Johannes Kepler University | Povacz M.,Johannes Kepler University | Hausner R.,AEE - Institute of Sustainable Technologies | Lang R.W.,Johannes Kepler University
Solar Energy | Year: 2016

For the utilization of polymeric materials in high-demanding applications like solar thermal systems it is of utmost importance to define the performance requirements and to investigate the applicability of components for defined systems under service relevant conditions. This paper deals with the lifetime estimation of black-pigmented polypropylene (PP) absorber grades for overheating protected solar thermal collector systems for hot water preparation in five representative climate zones. Based on experimental aging data in hot air and heat carrier fluid at elevated temperatures (95. °C, 115. °C and 135. °C) and climatic input data, as well as deduced loading conditions and absorber temperature distributions, the lifetime was calculated using a theoretical and an empirical extrapolation approach and assuming cumulating damages in service relevant temperature intervals. Depending on the PP grade, the extrapolation method and the location, endurance limits ranging from 8 to 50 years were obtained. The PP grade with ß-spherulithic structures and less carbon black exhibited a superior performance (factor 2) compared to a well-established grade which is currently widely used for swimming pool absorbers. © 2015 Elsevier Ltd.

Beccali M.,University of Palermo | Cellura M.,University of Palermo | Finocchiaro P.,University of Palermo | Guarino F.,University of Palermo | And 2 more authors.
Solar Energy | Year: 2014

Starting from the results of a Life Cycle Assessment of small solar assisted heat driven chillers, the application of such methodology has been extended to systems with a conventional compression chiller assisted by a photovoltaic plant (PV). This study aims to provide a comprehensive compared investigation of these two families of solar assisted cooling systems (with solar thermal or PV). Results indicate that, in many cases, the systems with the PV grid connected plant performed best. In addition, two more configurations were investigated to further define the PV assisted systems, which minimise their interaction with the grid through the use of electricity storages. These systems performed worse than the PV grid connected systems and the solar thermal assisted systems in nearly all the analysed cases. © 2013 Elsevier Ltd.

Muster-Slawitsch B.,AEE - Institute of Sustainable Technologies | Brunner C.,AEE - Institute of Sustainable Technologies | Padinger R.,Joanneum Research | Schnitzer H.,University of Graz
Chemical Engineering Transactions | Year: 2011

A newly developed algorithm for heat exchanger network design has been successfully tested in several case studies on its practical application potential. The combinatorial approach is based on an adapted time slice model and highlights the use of internal heat exchange, as well as exergetic considerations of heat exchangers. Results of a simple industrial case study are shown and outlook for future challenges are given. Copyright © 2011, AIDIC Servizi S.r.l.

Hofler K.,AEE - Institute of Sustainable Technologies | Venus D.,AEE - Institute of Sustainable Technologies
Energy Procedia | Year: 2015

Renovating the European building stock shows high potential for energy and greenhouse gas reductions. Thereby the optimum balance between energy conservation or efficiency measures and renewable energy generation on-site has to be found, regarding the primary energy and carbon emissions reductions as well as the renovation costs. The whole life cycle of the building has to be considered and therefore Life Cycle Cost (LCC) calculations and Life Cycle Assessment (LCA) are of importance. This paper shows some results to these issues and was prepared within the frame of the IEA EBC Annex 56 research project [1]. © 2015 Published by Elsevier Ltd.

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