Search results for " SGP Heat Engine"

showing 3 items of 3 documents

Water-organic systems in closed-loop reverse electrodialysis for lower regeneration requirements

2016

Salinity Gradient Power (SGP) is an emerging opportunity to produce sustainable energy. Among the different SGP technologies, Reverse ElectroDialysis (RED) looks very promising. In a RED system the salinity gradient between two different solutions is used to directly produce electricity. Closed-loop RED is an innovative process, combining a RED unit with a regeneration system. If low grade waste-heat is used for the regeneration stage, in which the initial concentrations of the solutions exiting the RED unit are restored, the closed-loop can be seen as a RED-heat-engine able to convert thermal energy into electricity. The aim of this work is to perform a preliminary analysis of a regenerati…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciRED SGP Heat Engine waste heat evaporation organic-mixtures
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Performance of a RED system with ammonium hydrogen carbonate solutions

2016

The use of closed-loop salinity gradient power (SGP) technologies has been recently presented as a viable option to generate power using low-grade heat, by coupling a SGP unit with a thermally-driven regeneration process in a closed loop where artificial solutions can be adopted for the conversion of heat into power. Among these, the closed-loop reverse electrodialysis (RED) process presents a number of advantages such as the direct production of electricity, the extreme flexibility in operating conditions and the recently demonstrated large potentials for industrial scale-up. Ammonium hydrogen carbonate (NH4HCO3) is a salt suitable for such closed-loop RED process thanks to its particular …

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSettore ING-IND/25 - Impianti ChimiciMechanical engineeringSalt (chemistry)Ocean Engineering02 engineering and technology010501 environmental sciences7. Clean energy01 natural sciencesHeat-to-powerPhase (matter)Waste heatReversed electrodialysisReverse electrodialysiOsmotic powerSalinity gradient powerProcess engineeringAmmonium hydrogen carbonate0105 earth and related environmental sciencesWater Science and Technologychemistry.chemical_classificationSettore ING-IND/24 - Principi Di Ingegneria Chimicabusiness.industry021001 nanoscience & nanotechnologyPollution6. Clean waterPower (physics)Reverse Electrodialysis Salinity Gradient Power SGP heat engine Waste heat Ammonium hydrogen carbonateElectricity generationchemistryScientific method0210 nano-technologybusinessAmmonium hydrogen carbonate; Heat engine; Heat-to-power; Reverse electrodialysis; Salinity gradient powerHeat engine
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Thermal regeneration of ammonium bi-carbonate solutions for closed-loop reverse electrodialysis

2016

Reverse electrodialysis is a novel technology that exploits a salinity gradient to generate electrical energy. The salinity gradient can be available from natural waters such as seawater and river water or they can be artificially generated and used within closed-loop applications. This last option has been recently investigated leading to the development of the RED heat engine concept. In this case, the deployed salinity gradient exiting the RED unit is regenerated in a thermally-driven unit using low-temperature heat, thus being able to convert heat to power within an integrated system. Among the different regeneration alternatives, the use of thermolytic salts has been presented as a pro…

Reverse Electrodialysis Salinity gradient Power SGP Heat Engine Waste heat Ammonium hydrogen carbonateSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimici
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