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3D numerical modelling and experimental validation of an asphalt solar collector

Identificadores del recurso

1359-4311

1873-5606

BIA2013-40917-R

http://hdl.handle.net/10902/11585

10.1016/j.applthermaleng.2017.07.127

Procedència

(Repositorio Abierto de la Universidad de Cantabria)

Fitxa

Títol:: 3D numerical modelling and experimental validation of an asphalt solar collector
Tema:: Numerical analysis; CFD; Asphalt collector; Solar energy collection; Thermal performance
Descripció:: Research about renewable technologies for thermal energy collection is crucial when critical problems such as climate change, global warming or environmental pollution are concerned. Transforming solar energy into thermal energy by means of asphalt solar collectors might help to reduce greenhouse gas emissions and fossil fuel consumption. In this paper, a laboratory-scale asphalt solar collector formed by different slabs has been characterized by applying numerical techniques. An experimental test where the thermal performance of the collector was determined for three values of heat exchange fluid flow rate was carried out for the validation of the numerical model. Then, the CFD model was used to analyse the thermal response of the collector according to the following parameters: flow rate, solar irradiance, size and thickness. Results show that increasing values of heat exchange fluid flow rate result in better thermal performances. Likewise, increasing values of irradiance and size of the collector lead to higher values of thermal performance, although other parameters should also be considered for the final design of the system. Finally, under the conditions here considered, the thickness of the collector turned out not to be as significant as expected in relation to its thermal response. The combination of experimental tests and CFD codes can be considered a powerful tool for the characterization of asphalt solar collectors without incurring significant costs related to experimental field tests.; This project, with reference BIA2013-40917-R, is financed by the Ministry of Economy, Industry and Competitiveness and funded by the State General Budget and the European Regional Development Fund (FEDER).
Font:: Applied Thermal Engineering, 2017, 126, 678-688
Idioma:: English
Relació:: https://doi.org/10.1016/j.applthermaleng.2017.07.127
Autor/Productor:: Alonso Estébanez, Alejandro; Pascual Muñoz, Pablo; Sampedro García, José Luis; Castro Fresno, Daniel
Editor:: Elsevier Ltd
Otros colaboradores/productores:: Universidad de Cantabria
Drets:: © 2017, Elsevier. Licensed under the Creative Commons Reconocimiento-NoComercial-SinObraDerivada; http://creativecommons.org/licenses/by-nc-nd/3.0/es/; openAccess
Data:: 2017-08-25T14:47:22Z; 2019-11-30T03:45:08Z; 2017-11-05
Tipo de recurso:: info:eu-repo/semantics/article; acceptedVersion

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12. <dc:description>Research about renewable technologies for thermal energy collection is crucial when critical problems such as climate change, global warming or environmental pollution are concerned. Transforming solar energy into thermal energy by means of asphalt solar collectors might help to reduce greenhouse gas emissions and fossil fuel consumption. In this paper, a laboratory-scale asphalt solar collector formed by different slabs has been characterized by applying numerical techniques. An experimental test where the thermal performance of the collector was determined for three values of heat exchange fluid flow rate was carried out for the validation of the numerical model. Then, the CFD model was used to analyse the thermal response of the collector according to the following parameters: flow rate, solar irradiance, size and thickness. Results show that increasing values of heat exchange fluid flow rate result in better thermal performances. Likewise, increasing values of irradiance and size of the collector lead to higher values of thermal performance, although other parameters should also be considered for the final design of the system. Finally, under the conditions here considered, the thickness of the collector turned out not to be as significant as expected in relation to its thermal response. The combination of experimental tests and CFD codes can be considered a powerful tool for the characterization of asphalt solar collectors without incurring significant costs related to experimental field tests.</dc:description>
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