The most-used thermodynamic CSP (concentrating solar plants) in the world, provided with linear paraboliccollectors cooled by oil, have been analyzed in the two configurations employed: with heat storage intwo tanks filled with molten salts and without heat storage. The performances and the costs of the plantshave been analyzed in the paper according to solar multiple (ranging between 1 and 3) and to storagecapacity (ranging between 0 and 24 h), in terms of annual electrical energy, average annual plant efficiency,charge factor, capital cost and levelized cost of energy (LCOE). Also a method of economic optimization,based on the evaluation of the minimum value of the levelized cost of energy is presented. The minimumLCOE value, in the case of heat storage, is obtained for a solar multiple of 2.2 and a storage capacity of 16 h. Inthe plants without storage, minimum LCOE is achieved for SM (solar multiple) equal to 1.2.
On the performance of CSP oil-cooled plants, with and without heat storage in tanks of molten salts
FERRARO, VITTORIO;
2015-01-01
Abstract
The most-used thermodynamic CSP (concentrating solar plants) in the world, provided with linear paraboliccollectors cooled by oil, have been analyzed in the two configurations employed: with heat storage intwo tanks filled with molten salts and without heat storage. The performances and the costs of the plantshave been analyzed in the paper according to solar multiple (ranging between 1 and 3) and to storagecapacity (ranging between 0 and 24 h), in terms of annual electrical energy, average annual plant efficiency,charge factor, capital cost and levelized cost of energy (LCOE). Also a method of economic optimization,based on the evaluation of the minimum value of the levelized cost of energy is presented. The minimumLCOE value, in the case of heat storage, is obtained for a solar multiple of 2.2 and a storage capacity of 16 h. Inthe plants without storage, minimum LCOE is achieved for SM (solar multiple) equal to 1.2.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
