ライブラリ登録: Guest
Proceedings of CONV-14: International Symposium on Convective Heat and Mass Transfer.
June, 8-13, 2014, Kusadasi, Turkey

DOI: 10.1615/ICHMT.2014.IntSympConvHeatMassTransf


ISBN Print: 978-1-56700-356-7

ISSN Online: 2642-3499

ISSN Flash Drive: 2642-3502

THREE DIMENSIONAL NUMERICAL STUDY OF AL2O3-THERMINOL VP-1 NANOFLUID ON HEAT TRANSFER ENHANCEMENT FROM AN ABSORBER TUBE OF A PARABOLIC TROUGH COLLECTOR

pages 1461-1474
DOI: 10.1615/ICHMT.2014.IntSympConvHeatMassTransf.1100
Get accessGet access

要約

Linear parabolic collectors are the most common type of technologies to convert solar energy to heat in the solar thermal power plants. Heat transfer across absorber tubes of parabolic collectors is the main element to find thermal efficiency of collectors. In this study effect of flow parameters such as mass flow rate, size and volume fraction of Gamma-AL2O3 Nanoparticles on the heat transfer enhancement from absorber tube of a parabolic collector is simulated numerically. Simulation is made for a collector similar to the LUZ-2 technology. Monte-Carlo ray tracing method is used to simulate three dimensional heat flux distribution on the absorber. Calculations are made for fall equinoxes (21 September). Therminol VP-1 thermal fluid (base fluid) and Nano-fluid (AL2O3-VP-1) is used as heat transfer fluid (HTF) of the collector. Analysis are made to find effect of mass flow rate on heat transfer rate for the base fluid and comparing with Nano-fluid, effect of Nano-particles size on the convection heat transfer coefficient and effect of Nano-particle volume fraction on heat transfer rate. Results are presented for variation of convection heat transfer with respect to various parameters. It is found that convection heat transfer coefficient will enhance by increasing mass flow rate, and by decreasing particle size without rise of pressure drop. Also it is found that convection heat transfer coefficient will not enhance by increasing Nano-particle volume fraction in turbulent flow. Major contributions are illustrated and compared with the base case.

Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集 価格及び購読のポリシー Begell House 連絡先 Language English 中文 Русский Português German French Spain