A wind-hydrogen hybrid system with carbon physisorption storage has been developed and implemented within a dynamic model-based software environment. Numerical simulations have been applied to synthetic and real data to evaluate its operations and performance over a 6-month period. Hydrogen is yielded by electrolysis with energy converted from wind, and load is powered either by direct turbine connection, by battery or a fuelcell. Surplus hydrogen is stored by physisorption in a cluster of nitrogen-cooled tanks filled with activated carbons. Physisorption has been modeled after the Ono-Kondo isotherm from laboratory data available in literature. The operating cycle is composed of four transformations: isobar pre-charging at 0.1MPa, isothermal charging at 77K, isobar pre-discharging at 6 MPa, and isothermal discharging at 153K. From our simulation runs, the system can operate as stand-alonegranting total independence from the grid. The storage system has good gravimetric and volumetric capacity(10.8%and 32.5g/l at 6 MPa). Overall system efficiency is estimated to be around 10%. Hydrogen physisorption on carbon seems a potentially feasible storage technique for hydrogen with tanks that are compact and safe, hence apt for stationary and some non-stationary applications.
Wind-hydrogen energy stand-alone system with carbon storage: Modeling and simulation / G., Zini; Tartarini, Paolo. - In: RENEWABLE ENERGY. - ISSN 0960-1481. - STAMPA. - 35 (11)(2010), pp. 2461-2467.
|Data di pubblicazione:||2010|
|Titolo:||Wind-hydrogen energy stand-alone system with carbon storage: Modeling and simulation|
|Autore/i:||G., Zini; Tartarini, Paolo|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.renene.2010.03.001|
|Codice identificativo ISI:||WOS:000279501300008|
|Codice identificativo Scopus:||2-s2.0-77954865829|
|Citazione:||Wind-hydrogen energy stand-alone system with carbon storage: Modeling and simulation / G., Zini; Tartarini, Paolo. - In: RENEWABLE ENERGY. - ISSN 0960-1481. - STAMPA. - 35 (11)(2010), pp. 2461-2467.|
|Tipologia||Articolo su rivista|
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