Heat-transfer enhancement coupled with density-difference separation: a novel sub-critical heat-rejection process for sCO2 cycles

Enhui Sun

doi:10.1016/j.applthermaleng.2026.132693

Heat-transfer enhancement coupled with density-difference separation: a novel sub-critical heat-rejection process for sCO2 cycles

2026-08-10

0

PRE

AI

E

Enhui Sun *

B

Bin Li

Z

Zhenyu Leng

Q

Qinchai Chen

J

Jinliang Xu

Y

Yifan Zhang

W

Wenfeng Fu

DOI：10.1016/j.applthermaleng.2026.132693

Original

Original request for help

Save

Abstract

En 中文

• A novel sub-critical heat-rejection process using mixed-flow heat transfer for sCO2 cycles is proposed for sCO2 cycles. • Direct-contact cooling between CO2 and water transforms heat rejection into near-isothermal. • Replacing supercritical compression with liquid-phase pumping reduces work and improves efficiency. • The cycle increases thermal efficiency from 47.59% to 49.86% and reduces mass flow by 15.62% for the same power output.

Keywords:

Supercritical CO2 cycle

Mixed-flow heat transfer

Density-difference separation

Mutual solubility

Liquid-phase compression

Heat-transfer enhancement coupled with density-difference separation: a novel sub-critical heat-rejection process for sCO2 cycles

Abstract

Journal

Organization

Cited Papers

Citing Papers