000086298 001__ 86298
000086298 005__ 20200716101502.0
000086298 0247_ $$2doi$$a10.1016/j.apenergy.2018.11.024
000086298 0248_ $$2sideral$$a109169
000086298 037__ $$aART-2019-109169
000086298 041__ $$aeng
000086298 100__ $$0(orcid)0000-0002-0787-8938$$aHerrando, María$$uUniversidad de Zaragoza
000086298 245__ $$aA comprehensive assessment of alternative absorber-exchanger designs for hybrid PVT-water collectors
000086298 260__ $$c2019
000086298 5060_ $$aAccess copy available to the general public$$fUnrestricted
000086298 5203_ $$aIn this paper, 26 alternative absorber-exchanger designs for hybrid PV-Thermal (PVT) solar collectors are proposed and compared against a reference-case, commercial sheet-and-tube PVT collector. The collectors involve different geometric design features based on the conventional sheet-and-tube configuration, and also on a newer flat-box structure constructed from alternative polymeric materials with the aim of maintaining or even improving heat transfer and overall (thermal and electrical) performance while achieving reductions in the overall weight and cost of the collectors. The main contributions of this research include: (i) the development and validation of a detailed 3-D computational finite-element model of the proposed PVT collector designs involving multi-physics processes (heat transfer, fluid dynamics and solid mechanics); (ii) results from comparative techno-economic analyses of the proposed PVT designs; and, (iii) further insights from thermal stress and structural deformation analyses of the proposed collectors, which are crucial for ensuring long lifetimes and especially important in the case of polymeric collectors. The results show that, in general, the flat-box designs (characterised by a thin absorber plate) are not sensitive to the flow-channel size or construction material, at least within the range of investigation. A PVT collector featuring a polycarbonate (PC) flat-box design with 3¿×¿2¿mm rectangular channels appears to be a particularly promising alternative to commercial PVT collectors, achieving a slightly improved thermal performance compared to the reference case (with a 4% higher optical efficiency and 15% lower linear heat-loss coefficient), while also lowering the weight (by around 9%) and investment cost (by about 21%) of the collector. The structural analysis shows that the maximum von Mises stress experienced in the absorber-exchanger of the PC flat-box collector is considerably lower than that in the copper sheet-and-tube collector (<13% vs. 64% of the material’s yield stress), which is attributed to the larger thermal expansion of the PC absorber-exchanger, that leads to lower stresses. Therefore, the proposed PC flat-box design is not expected to suffer higher strains than the commercially-available PVT collector.
000086298 536__ $$9info:eu-repo/grantAgreement/ES/UZ/CAI-Ibercaja-IT9-16
000086298 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000086298 590__ $$a8.848$$b2019
000086298 591__ $$aENGINEERING, CHEMICAL$$b6 / 143 = 0.042$$c2019$$dQ1$$eT1
000086298 591__ $$aENERGY & FUELS$$b9 / 112 = 0.08$$c2019$$dQ1$$eT1
000086298 592__ $$a3.607$$b2019
000086298 593__ $$aBuilding and Construction$$c2019$$dQ1
000086298 593__ $$aCivil and Structural Engineering$$c2019$$dQ1
000086298 593__ $$aEnergy (miscellaneous)$$c2019$$dQ1
000086298 593__ $$aNuclear Energy and Engineering$$c2019$$dQ1
000086298 593__ $$aFuel Technology$$c2019$$dQ1
000086298 593__ $$aManagement, Monitoring, Policy and Law$$c2019$$dQ1
000086298 593__ $$aMechanical Engineering$$c2019$$dQ1
000086298 593__ $$aEnergy Engineering and Power Technology$$c2019$$dQ1
000086298 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000086298 700__ $$aRamos, Alba
000086298 700__ $$0(orcid)0000-0001-6183-0831$$aZabalza, Ignacio$$uUniversidad de Zaragoza
000086298 700__ $$aMarkides, Christos N.
000086298 7102_ $$15001$$2600$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Mecánica de Fluidos
000086298 7102_ $$15004$$2590$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Máquinas y Motores Térmi.
000086298 773__ $$g235 (2019), 1583-1602$$pAppl. energy$$tApplied Energy$$x0306-2619
000086298 8564_ $$s1163636$$uhttps://zaguan.unizar.es/record/86298/files/texto_completo.pdf$$yPostprint
000086298 8564_ $$s87775$$uhttps://zaguan.unizar.es/record/86298/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000086298 909CO $$ooai:zaguan.unizar.es:86298$$particulos$$pdriver
000086298 951__ $$a2020-07-16-09:14:04
000086298 980__ $$aARTICLE