Showing 1 - 10 of 243
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
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
. 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
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
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
control parameters. Regarding turbocharger influence on emissions the control parameters by-pass and waste-gate are also …
Persistent link: https://www.econbiz.de/10011053350
that for quasi-adiabatic conditions, having the turbocharger working at high speed; the mechanical efficiency could be … coefficients of the model and basic geometrical parameters of the turbocharger. …
Persistent link: https://www.econbiz.de/10011053673
Nowadays, computer models have contributed to a better understanding and solution of long standing practical combustion problems in HCCI (homogenous charge compression ignition) engines. In this study, a new multi zone model is developed for HCCI engines simulation. Model contains four different...
Persistent link: https://www.econbiz.de/10010906852
A novel GAHP-TSU (gravity-assisted heat-pipe thermal storage unit) is presented, in which the composite granular solid–liquid PCM (phase-change material) is piled up as the porous-medium layer. The composite PCM, which melts over a temperature range of 200–250 °C, is composed of a mixed...
Persistent link: https://www.econbiz.de/10011209449
A fin-and-tube evaporator can be used for an ORC (organic Rankine cycle) to collect waste heat of the exhaust gas of an internal combustion engine. In this paper, the thermal-hydraulic characteristics of an ORC evaporator are analyzed using a CFD method. A 3D numerical model is derived from an...
Persistent link: https://www.econbiz.de/10011209457