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The present work mainly focuses on the thermodynamic and exergoeconomic comparisons between the novel single-pressure multi-stage CDTPCs (carbon dioxide transcritical power cycles) and single-pressure single-stage CDTPC for engine waste heat recovery. A method based on exergy fuel distribution is proposed to calculate the fuel cost for the bottoming CDTPCs. Parametric analysis is conducted to study...
Convection heat transfer characteristics in a single rock fracture was experimentally investigated in this work. Distilled water was used as working medium for heat transfer in manmade smooth and rough fractures of sandstone and granite samples. The influence of fracture surface roughness on heat transfer intensity was analyzed. During seepage heat transfer process, evolution of samples external surface...
Compared with the ORC (organic Rankine cycle) and the steam Rankine cycle, the CDTPC (CO2 (carbon dioxide) transcritical power cycle) shows a higher potential in converting middle-grade waste heat into useful work. In this paper, we propose a novel type of single-pressure, multi-stage CDTPC to overcome the shortcomings of the CDTPC in utilizing waste heat of exhaust gas from gas turbines or internal...
Reducing solid particle erosion of blades is one of the most urgent problems for supercritical steam turbine power generation technology. Based on the erosion rate models and the particle rebound models of blade materials obtained through accelerated erosion test under high temperature, systematic numerical simulations of the complex steam-particle flow in high pressure inlet flow channel and governing...
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