Expansion devices for organic Rankine cycle (ORC) using in low temperature heat recovery: A review

Y Zhao, G Liu, L Li, Q Yang, B Tang, Y Liu - Energy Conversion and …, 2019 - Elsevier
Studies and applications of organic Rankine cycle (ORC) systems are increasing in recent
years because of the advantages of them on the recovery of low temperature heat sources …

Nonideal compressible fluid dynamics of dense vapors and supercritical fluids

A Guardone, P Colonna, M Pini… - Annual Review of Fluid …, 2024 - annualreviews.org
The gas dynamics of single-phase nonreacting fluids whose thermodynamic states are close
to vapor-liquid saturation, close to the vapor-liquid critical point, or in supercritical conditions …

Cycle and turbine optimisation for an ORC operating with two-phase expansion

MT White - Applied Thermal Engineering, 2021 - Elsevier
Previous investigations suggest the power output from waste-heat recovery organic Rankine
cycle (ORC) systems could be enhanced by up to 30% by operating with two-phase …

Design and off-design optimisation of an organic Rankine cycle (ORC) system with an integrated radial turbine model

S Schuster, CN Markides, AJ White - Applied Thermal Engineering, 2020 - Elsevier
This paper investigates the design and thermodynamic optimisation of both sub-and
transcritical organic Rankine cycle (ORC) power systems featuring radial turbines via …

Insights into the turbulent flow of dense gases through high-fidelity simulations

P Cinnella, X Gloerfelt - Computers & Fluids, 2023 - Elsevier
This article reviews recent advances in the understanding of turbulent flows of non-ideal
gases through the use of high-fidelity direct and large eddy simulations. In particular, the …

The effect of isentropic exponent on transonic turbine performance

D Baumgärtner, JJ Otter… - Journal of …, 2020 - asmedigitalcollection.asme.org
The isentropic exponent is one of the most important properties affecting gas dynamics.
Nonetheless, its effect on turbine performance is not well known. This paper discusses a …

Numerical Loss Investigation of a Small Scale, Low Specific Speed Supercritical CO2 Radial Inflow Turbine

JA Keep, IHJ Jahn - Journal of Engineering for Gas …, 2019 - asmedigitalcollection.asme.org
Radial inflow turbines, characterized by a low specific speed, are a candidate architecture
for the supercritical CO2 Brayton cycle at small scale, ie, less than 5 MW. Prior cycle studies …

Non-ideal compressible flows in supersonic turbine cascades

A Romei, D Vimercati, G Persico… - Journal of Fluid …, 2020 - cambridge.org
Flows in the close proximity of the vapour–liquid saturation curve and critical point are
examined for supersonic turbine cascades, where an expansion occurs through a …

Direct numerical simulations of temporal compressible mixing layers in a Bethe–Zel'dovich–Thompson dense gas: influence of the convective Mach number

A Vadrot, A Giauque, C Corre - Journal of Fluid Mechanics, 2021 - cambridge.org
The present article investigates the effects of a BZT (Bethe–Zel'dovich–Thompson) dense
gas (FC-70) on the development of turbulent compressible mixing layers at three different …

Unsteady operation of a highly supersonic organic Rankine cycle turbine

E Rinaldi, R Pecnik, P Colonna - Journal of …, 2016 - asmedigitalcollection.asme.org
Organic Rankine cycle (ORC) turbogenerators are the most viable option to convert
sustainable energy sources in the low-to-medium power output range (from tens of kWe to …