79610 20200716101419.0 doi 10.1016/j.solener.2019.06.001 sideral 112040 ART-2019-112040 eng (orcid)0000-0001-5561-5457 Collado Giménez, Francisco Javier Universidad de Zaragoza A two-parameter aiming strategy to reduce and flatten the flux map in solar power tower plants 2019 Access copy available to the general public Unrestricted In surrounding solar power tower plants, the collector field is designed with all the heliostats pointing to the cylindrical receiver equator to obtain maximum intercept. However, in commercial plants, the addition of thousands of energy spots at the same receiver level causes an excessively high peak heat flux of about 2 MW/m2. Therefore, this peak flux should be almost halved to avoid receiver problems due to creep and fatigue effects. The single-parameter aiming strategy (Vant-Hull, 2002) has already shown its ability to divide this high peak flux into two lower peaks; it consists in moving the hot spots up and down from the equator, in alternative heliostat rows, to create symmetric flux maps although they are clearly not very homogeneously distributed along the receiver height. In this work, a slight variation of the single-parameter aim strategy, simply proposing two aim parameters, has been successfully tested for a commercial solar power tower plant with a regular layout. The new two-parameter aiming strategy achieves not only reasonable peak flux values, but also an acceptably flattened flux profile and a slight reduction in spillage compared with the single-parameter strategy. info:eu-repo/grantAgreement/ES/MINECO/ENE2015-67518-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.608 2019 1.537 2019 ENERGY & FUELS 35 / 112 = 0.312 2019 Q2 T1 Renewable Energy, Sustainability and the Environment 2019 Q1 Materials Science (miscellaneous) 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0002-2226-7561 Guallar Paracuellos, Jesús Universidad de Zaragoza 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 188 (2019), 185-189 Sol. energy Solar Energy 0038-092X 793588 http://zaguan.unizar.es/record/79610/files/texto_completo.pdf Versión publicada 94541 http://zaguan.unizar.es/record/79610/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:79610 articulos driver 2020-07-16-08:38:58 ARTICLE