Solar-driven thermo-hydraulic process for reverse osmosis desalination
| Autor: | Lacroix, Clément, Hacheche, Mahmoud, Perier-Muzet, Maxime, Stitou, Driss |
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| Přispěvatelé: | Procédés, Matériaux et Energie Solaire (PROMES), Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS), Perier-Muzet, Maxime |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
thermal energy
Solar desalination reverse osmosis [SPI]Engineering Sciences [physics] [SPI] Engineering Sciences [physics] [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering dynamic modeling [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering thermo-hydraulic cycle |
| Zdroj: | THE 31ST INTERNATIONAL CONFERENCE ON EFFICIENCY, COST, OPTIMIZATION, SIMULATION AND ENVIRONMENTAL IMPACT OF ENERGY SYSTEMS THE 31ST INTERNATIONAL CONFERENCE ON EFFICIENCY, COST, OPTIMIZATION, SIMULATION AND ENVIRONMENTAL IMPACT OF ENERGY SYSTEMS, Jun 2018, GUIMARÃES, Portugal |
| Popis: | International audience; Existing distillation-based desalination processes are highly thermal energy consuming. Reverse osmosis (RO) technique is more efficient than thermal-based processes but it remains a solution that still induces high operating and maintenance costs. In this paper, an innovative thermally powered RO-based desalination process is presented. This new RO thermo-hydraulic process enables the pressurization of the salty water beyond its osmotic pressure to allow the permeation water through a semi-permeable membrane, thanks to a piston or an elastic bladder that is set in motion in a reservoir by a working fluid following a thermodynamic engine cycle similar to an Organic Rankine Cycle. The evaporator is heated by low grade heat (70 to 80°C) such the one delivered by plate solar collectors, while the condenser is cooled by the concentrated salty water. In order to enable a continuous drinkable water production, this process needs to implement two reservoirs, alternatively connected either to a high pressure evaporator or to a low pressure condenser. Such installation, designed here for brackish water desalination (5 g/liter), should enable an average daily production of 300 liters of drinkable water per m² of solar collectors with a production cost below 4€/m 3. That technology seems to be relevant for small scale (5 to 10 m 3 /day) the daily water needs of people living in remote areas, in accordance to the location and the solar resource. A modeling of the whole process, considering a quasi-steady state approach has been developed in order to study its dynamic behavior, optimize its design and maximize its performances. This paper presents the preliminary results relative to the performance of such solar-driven desalination process. |
| Databáze: | OpenAIRE |
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