Dynamic Modeling of the Solar Field in Parabolic Trough Solar Power Plants

Energies

Lourdes A. Barcia³  Rogelio Peón Menéndez¹  Juan Á. Martínez Esteban⁵  Miguel A. José Prieto⁵  Juan A. Martín Ramos⁵  F. Javier de Cos Juez²  Antonio Nevado Reviriego⁴ 

[1] Grupo TSK, Gijón 33203, Asturias, Spain;Department of Explotation and Prospection of Mining, University of Oviedo, Asturias 33004, Spain;;Normagrup Technology S.A. Llanera 33420, Asturias, SpainDepartment of Electrical, Electronics and Control Engineering, National Distance Education University, Madrid 28040, Spain;Department of Electrical Engineering, University of Oviedo, Gijón 33203, Asturias, Spain;

关键词: thermal power plant;    heat transfer fluid (HTF);    process modeling;   

DOI  :  10.3390/en81212373

来源: mdpi

【 摘 要 】

Parabolic trough solar power plants use a thermal fluid to transfer thermal energy from solar radiation to a water-steam Rankine cycle in order to drive a turbine that, coupled to an electrical generator, produces electricity. These plants have a heat transfer fluid (HTF) system with the necessary elements to transform solar radiation into heat and to transfer that thermal energy to the water-steam exchangers. In order to get the best possible performance in the Rankine cycle and, hence, in the thermal plant, it is necessary that the thermal fluid reach its maximum temperature when leaving the solar field (SF). Also, it is mandatory that the thermal fluid does not exceed the maximum operating temperature of the HTF, above which it degrades. It must be noted that the optimal temperature of the thermal fluid is difficult to obtain, since solar radiation can change abruptly from one moment to another. The aim of this document is to provide a model of an HTF system that can be used to optimize the control of the temperature of the fluid without interfering with the normal operation of the plant. The results obtained with this model will be contrasted with those obtained in a real plant.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.