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Experimental evaluation of desuperheating and oil cooling process through liquid injection in two-staged ammonia refrigeration systems with screw compressors
(Pergamon-Elsevier Science Ltd, Oxford, 2012)
This paper examines the problem of achieving desuperheating through liquid injection in two-staged refrigeration systems based on screw compressors. The oil cooling process by refrigerant injection is also included. The ...
Experimental determination thermo physical characteristics of balled biomass
(Pergamon-Elsevier Science Ltd, Oxford, 2012)
The paper presents the results of an experimental investigation conducted to determine the permeability coefficients and the stagnant thermal conductivity i.e. the thermo physical properties deemed to be the most important ...
Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization
(Elsevier Sci Ltd, Oxford, 2015)
Objective. To determine the shear bond strength (SBS) between synthetic controlled porous hydroxyapatite (HAP) inserts and restorative materials and dimensional changes of insert-containing restorations during curing. ...
Wind energy resource development in Ethiopia as an alternative energy future beyond the. dominant hydropower
(Pergamon-Elsevier Science Ltd, Oxford, 2013)
Over the centuries, energy has been supplied by wood, coal, oil and natural gas, as well as by uranium. All these energy sources are limited and create pollution problems. This has led countries to focus on a sustainable ...
Techno-economic optimization of plant for raw ethanol production based on experimental data
(Pergamon-Elsevier Science Ltd, Oxford, 2014)
This paper concerns techno-economic optimization of the production process of raw ethanol in a continuous distillation column as a part of the plant for production of rectified alcohol. Optimization was performed in order ...
Ensemble of various neural networks for prediction of heating energy consumption
(Elsevier Science Sa, Lausanne, 2015)
For prediction of heating energy consumption-of a university campus, various artificial neural networks are used: feed forward backpropagation neural network (FFNN), radial basis function network (RBFN) and adaptive ...
Symmetric Spaces and Fixed Points of Generalized Contractions
(Hindawi Ltd, London, 2014)
Some fixed point results in semi-metric spaces as well as in symmetric spaces are proved. Applications of our results to probabilistic spaces are also presented.
NOx emission reduction by staged combustion in grate combustion of biomass fuels and fuel mixtures
(Elsevier Sci Ltd, Oxford, 2012)
NOx and N2O emissions have been investigated for different pelletized biomass fuels and fuel mixtures thereof both with and without air staging in a grate fired multi-fuel reactor. The fuels investigated are wood, demolition ...
Experimental determination of fouling factor on plate heat exchangers in district heating system
(Elsevier Science Sa, Lausanne, 2012)
This paper presents the results of experimental research on 8 plate heat exchangers. Their purpose is to heat water for radiator heating system and domestic hot water. Measurements were carried out in 4 substations in ...
Introduction to ECOS 2011
(Pergamon-Elsevier Science Ltd, Oxford, 2012)