Narrow search
Showing 1 - 10 of 523
Cover Image
Heat transfer performance and exergetic optimization for solar receiver pipe
Jianfeng, Lu; Jing, Ding; Jianping, Yang - In: Renewable Energy 35 (2010) 7, pp. 1477-1483
The basic physical model of solar receiver pipe with solar selective coating is established, and associated heat transfer and exergetic performances are analyzed and optimized. Because of the heat losses of natural convection and infrared radiation, the energy absorption efficiency has a maximum...
Persistent link: https://www.econbiz.de/10010807044
Cover Image
The exergy fields in transport processes: Their calculation and use
Lior, Noam; Sarmiento-Darkin, Wladimir; Al-Sharqawi, … - In: Energy 31 (2006) 5, pp. 553-578
This paper is a brief review of the method for analyzing the space and time dependent exergy and irreversibility fields …
Persistent link: https://www.econbiz.de/10010811889
Cover Image
Influence of channel depth on the performance of solar air heaters
Sun, Wei; Ji, Jie; He, Wei - In: Energy 35 (2010) 10, pp. 4201-4207
In the design of solar air heaters (SAHs), channel depth is a principal variable to be fixed. In this paper, the effect of the channel depth on the energy gain of type I and type III SAHs has been investigated by computational fluid dynamics (CFD) simulations. Laminar model and k–ω turbulence...
Persistent link: https://www.econbiz.de/10011055539
Cover Image
The effects of turbocharger on the performance and exhaust emissions of a diesel engine fuelled with biodiesel
Karabektas, Murat - In: Renewable Energy 34 (2009) 4, pp. 989-993
This paper investigates the effects of turbocharger on the performance of a diesel engine using diesel fuel and … 200rpm. Then, a turbocharger system was installed on the engine and the tests were repeated for both fuel cases. The …
Persistent link: https://www.econbiz.de/10010804447
Cover Image
Neural networks and simple models for the fault diagnosis of naval turbochargers
Pantelelis, Nikos G.; Kanarachos, Andreas E.; Gotzias, Nikos - In: Mathematics and Computers in Simulation (MATCOM) 51 (2000) 3, pp. 387-397
The present work deals with the development of simple finite element (FE) models of a turbocharger (rotor, foundation … the monitoring of the real turbocharger. The third step is the accurate modelling of the foundations and the excitation … turbocharger with vibration data obtained on working conditions show some promising results. …
Persistent link: https://www.econbiz.de/10010749248
Cover Image
External heat losses in small turbochargers: Model and experiments
Payri, Francisco; Olmeda, Pablo; Arnau, Francisco J.; … - In: Energy 71 (2014) C, pp. 534-546
. The model has been adjusted in a turbocharger test bench for two different turbochargers, later on it has been validated … external heat flows among the different elements of the turbocharger, showing the operative points in which external heat …
Persistent link: https://www.econbiz.de/10010808333
Cover Image
Experimental identification of turbocharger mechanical friction losses
Deligant, M.; Podevin, P.; Descombes, G. - In: Energy 39 (2012) 1, pp. 388-394
friction losses of the bearings separately. Measuring the friction losses of a turbocharger is not easy and existing methods … measure only the total losses due to the association of journal and thrust bearings. A novel turbocharger test bench equipped …
Persistent link: https://www.econbiz.de/10010808587
Cover Image
Optimization of diesel engine performances for a hybrid wind–diesel system with compressed air energy storage
Ibrahim, H.; Younès, R.; Basbous, T.; Ilinca, A.; … - In: Energy 36 (2011) 5, pp. 3079-3091
Electricity supply in remote areas around the world is mostly guaranteed by diesel generators. This relatively inefficient and expensive method is responsible for 1.2 million tons of greenhouse gas (GHG) emission in Canada annually. Some low- and high-penetration wind–diesel hybrid systems...
Persistent link: https://www.econbiz.de/10010810422
Cover Image
Innovative combined heat and power system based on a double shaft intercooled externally fired gas cycle
Iora, P.; Silva, P. - In: Applied Energy 105 (2013) C, pp. 108-115
cycle). This configuration exploits the turbocharger technology widely diffused in the automotive industry, taking advantage …
Persistent link: https://www.econbiz.de/10011040954
Cover Image
Characterization of a radial turbocharger turbine in pulsating flow by means of CFD and its application to engine modeling
Galindo, J.; Fajardo, P.; Navarro, R.; García-Cuevas, L.M. - In: Applied Energy 103 (2013) C, pp. 116-127
turbocharger test rig. Three different pulse frequencies (50, 90 and 130Hz) and two pulse amplitudes (100 and 180kPa) were …
Persistent link: https://www.econbiz.de/10011040977