Narrow search
Showing 1 - 10 of 161
Cover Image
Cavitation simulation on horizontal axis marine current turbines
Uşar, D.; Bal, Ş. - In: Renewable Energy 80 (2015) C, pp. 15-25
In this paper, the occurrence of cavitation on horizontal axis marine current turbine blades has been investigated by … numerical methods. To implicate the effects of cavitation on turbine performance, a momentum blade element method was used in …% theoretical loss in generated power is predicted for the particular case of a model turbine subjected to cavitation under specific …
Persistent link: https://www.econbiz.de/10011263789
Cover Image
Richtmyer–Meshkov instability in liquid metal flows: influence of cavitation and magnetic fields
Samulyak, Roman; Prykarpatskyy, Yarema - In: Mathematics and Computers in Simulation (MATCOM) 65 (2004) 4, pp. 431-446
The influence of magnetic fields and cavitation on the Richtmyer–Meshkov (RM) instability in liquid mercury has been …-phase equation of state for modeling of liquids with cavitation bubbles and applied it to the study of the evolution of mercury due …
Persistent link: https://www.econbiz.de/10010749329
Cover Image
Numerical analysis of injector flow and spray characteristics from diesel injectors using fossil and biodiesel fuels
Battistoni, Michele; Grimaldi, Carlo Nazareno - In: Applied Energy 97 (2012) C, pp. 656-666
The aim of the paper is the comparison of the injection process with two fuels, a standard diesel fuel and a pure biodiesel, methyl ester of soybean oil. Multiphase cavitating flows inside injector nozzles are calculated by means of unsteady CFD simulations on moving grids from needle opening to...
Persistent link: https://www.econbiz.de/10010702438
Cover Image
Application of Support Vector Machine (SVM) and Proximal Support Vector Machine (PSVM) for fault classification of monoblock centrifugal pump
Sakthivel, N.R.; Sugumaran, V.; Nair, Binoy B. - In: International Journal of Data Analysis Techniques and … 2 (2010) 1, pp. 38-61
Monoblock centrifugal pumps are widely used in a variety of applications. Defects and malfunctions (faults) of these pumps result in significant economic loss. Therefore, the pumps must be under constant monitoring. When a possible fault is detected, diagnosis is carried out to pinpoint it. In...
Persistent link: https://www.econbiz.de/10008755538
Cover Image
Effect of internal nozzle flow and thermo-physical properties on spray characteristics of methyl esters
Mohan, Balaji; Yang, Wenming; Yu, Wenbin - In: Applied Energy 129 (2014) C, pp. 123-134
representative of different biodiesels. A new hybrid spray model developed by coupling cavitation induced spray model with KHRT model …
Persistent link: https://www.econbiz.de/10010784936
Cover Image
Hybrid solar–geothermal power generation: Optimal retrofitting
Ghasemi, Hadi; Sheu, Elysia; Tizzanini, Alessio; Paci, Marco - In: Applied Energy 131 (2014) C, pp. 158-170
A model is developed for an existing organic Rankine cycle (ORC) utilizing a low-temperature geothermal brine including the performance characteristics of the components. The model is validated with a set of 7200 operation data collected in one-year. The operation of the ORC is optimized...
Persistent link: https://www.econbiz.de/10010906270
Cover Image
Thermodynamic analysis of organic Rankine cycle using zeotropic mixtures
Zhao, Li; Bao, Junjiang - In: Applied Energy 130 (2014) C, pp. 748-756
In recent years, more and more attention has been paid to organic Rankine cycle (ORC), which is simply structured, highly reliable and easily maintainable. In order to improve the efficiency of ORC systems, zeotropic mixtures whose phase change process is variable temperature, are used as...
Persistent link: https://www.econbiz.de/10010906291
Cover Image
Methodology for estimating thermodynamic parameters and performance of working fluids for organic Rankine cycles
Brown, J. Steven; Brignoli, Riccardo; Daubman, Samantha - In: Energy 73 (2014) C, pp. 818-828
In this paper, a simple methodology of applying the Peng–Robinson (P–R) EoS (Equation of State) to easily, quickly, and inexpensively evaluate and screen the performance potentials of many thousands of working fluids in ORC (organic Rankine cycles) is presented. The P–R EoS can be applied...
Persistent link: https://www.econbiz.de/10010906847
Cover Image
Statistical analysis of patent data relating to the organic Rankine cycle
Fu, Ben-Ran; Hsu, Sung-Wei; Liu, Chih-Hsi; Liu, Yu-Ching - In: Renewable and Sustainable Energy Reviews 39 (2014) C, pp. 986-994
This study analyzed patent data to explore the technological developments based on the organic Rankine cycle (ORC), which is one of the most economical and efficient methods for converting low-grade thermal energy into electricity. The patent data were obtained from the Thomson Innovation...
Persistent link: https://www.econbiz.de/10010931127
Cover Image
A comparison of advanced heat recovery power cycles in a combined cycle for large ships
Larsen, Ulrik; Sigthorsson, Oskar; Haglind, Fredrik - In: Energy 74 (2014) C, pp. 260-268
Strong motivation exists within the marine sector to reduce fuel expenses and to comply with ever stricter emission regulations. Heat recovery can address both of these issues. The ORC (organic Rankine cycle), the Kalina cycle and the steam Rankine cycle have received the majority of the focus...
Persistent link: https://www.econbiz.de/10010931357