English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Printed circuit heat exchanger (PCHE) is an essential part of supercritical CO 2  (sCO 2 ) Brayton cycle in the 3 rd  generation of concentrating solar power plant. Molten salt and sCO 2  as the heat transfer fluid in PCHE, it is of great significance to improve its thermal and hydraulic performance. To reach this goal, two new discontinuous fin channels of PCHE were designed and their thermal-hydraulic performance was studied by numerical simulation. The results show that the second discontinuous fins channel with the best comprehensive thermal-hydraulic performance for sCO 2 , which has the Colburn j factor improvement by 2.1-4.6% and the Fanning friction factor f reduction by 3.8-6.4% compared with that of the airfoil fins; While the third discontinuous fins channel has the best hydraulic performance for both the heat transfer medium of molten salt and sCO 2 , among which the pressure drop per unit length and f have the largest reduction by 0.05-24.7% and 5.91-19.1% for sCO 2 , and by 25.62-29.39% and 1.35-2.4% for molten salt. As a result, the second and third discontinuous fins channel of PCHE are proposed to sCO 2  and molten salt, respectively, which can contribute to design the PCHE for the 3 rd  generation of solar thermal power generation.

Numerical study of thermal-hydraulic performance of sCO 2 -molten salt printed circuit heat exchanger with discontinuous fins channel