Thermal performance analysis and economic evaluation of roof-integrated solar concrete collector

Transferring the south solar energy to the north facade through embedded water pipes

“…[27]. These are 30W/m 2 .K and 6.5W/m 2 .K (combined convective and radiative) for the outside and inside surfaces, respectively.…”

“…The diameter of the tubes is 2.54 cm and the spacing between them is 10 cm. The results of the current developed numerical model are compared to those of the experiment and the numerical model of [27]. The ambient conditions.…”

“…3 presents the outside surface temperature (red curves), the water temperature (blue curves), and the inside surface temperature (black curves). The dotted curves represent the experimental data, the solid ones represent the numerical model results of [27], and the dashed ones represents the results of the current developed numerical model. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.…”

“…We have chosen two experiments. The first one [27] represents an experimental and numerical study of a roof-integrated solar concrete collector for reducing heat gain to a house and providing domestic hot water. The solar concrete collector is made of PVC pipes embedded in a concrete roof.…”

“…In Ref. [27], a test-case room was built with the solar concrete collector on its roof. The latter has an area a thickness of 12 cm.…”