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Numerical analysis on utilizing excess steam for electricity production in cruise ships
(Elsevier Ltd., 2019-02-01)
Marine sector has a significant contribution to the global greenhouse gas emissions and energy usage. Despite that the energy efficiency of ship engines has been increased drastically and the usage of new type of fuels ...
Experimental and analytical analysis of vaned savonius turbine performance under different operating conditions
(Elsevier, 2019-05-13)
Global energy production is shifting towards more distributed technologies, where power generation takes place close to people. A vaned Savonius wind turbine is one of the possible solutions, which can fulfil the requirements ...
Analysis of radial-outflow turbine design for supercritical CO2 and comparison to radial-inflow turbines
(Elsevier, 2021-12-09)
Cycles using supercritical carbon dioxide have been recognized as potential future power technology. However, the turbines in these systems tend to experience very high rotational speeds and entail small physical sizes, ...
Study of the Intelligent Control and Modes of the Arctic-Adopted Wind–Diesel Hybrid System
(MDPI, 2021-07-11)
For energy supply in the Arctic regions, hybrid systems should be designed and equipped to ensure a high level of renewable energy penetration. Energy systems located in remote Arctic areas may experience many peculiar ...
Modelling of Low-Reynolds-Number Centrifugal Compressors: Challenges in Performance and Flow Control Prediction
(2018)
A low-Reynolds-number causes a performance deterioration in centrifugal compressors due to the relative increase in boundary layer thickness, tip clearance, and surface roughness. The degradation of the efficiency can be ...
Validation of the Axial Thrust Estimation Method for Radial Turbomachines
(Hindawi, 2021-02-24)
The fast preliminary design and safe operation of turbomachines require a simple and accurate prediction of axial thrust. An underestimation of these forces may result in undersized bearings that can easily overload and ...
Effect of non-ideally manufactured riblets on airfoil and wind turbine performance
(Elsevier, 2020-03-25)
Riblets are a passive flow control method, which can be used for drag reduction, especially with small wind turbines that have a low Reynolds number. Riblet manufacturing, however, is a challenging task and the required ...
Numerical investigation of roughness effect on wet steam ejector performance in the refrigeration cycle
(Springer Nature, 2022-03-16)
Machining operation and presence of water droplets cause increase the surface roughness of wet steam ejector walls and change its performance in the refrigeration cycle. The purpose of this work is to investigate the ...
Design and verification of a hermetic high-speed turbogenerator concept for biomass and waste heat recovery applications
(Elsevier, 2020-09-11)
Many waste heat recovery and biomass applications offer opportunities for small-scale steam turbines to produce electricity and to improve systems’ energy efficiency. However, the currently used axial turbine-based technology ...
Profile loss and turbulence modelling in radial outflow turbine cascades
(The European Turbomachinery Society, 2023)
Radial outflow turbines (ROTs) offer an alternative for single stage high-work axial turbines in steam and organic Rankine cycle applications. Their main benefits are lower Mach number levels, improved design and off-design ...