Institutt for prosess-, energi- og miljøteknologi: Nye registreringer
Viser treff 321-338 av 338
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Pressure drop, flow pattern and local water volume fraction measurements of oil-water flow in pipes
(Journal article; Peer reviewed, 2009-11)Oil-water flow in horizontal and slightly inclined pipes was investigated. The experimental activities were performed using the multiphase flow loop at Telemark University College, Porsgrunn, Norway. The two-fluid model ... -
Experimental Study of the Initial Flame Propagation of Premixed H2-air Explosion in a Channel
(Conference object; Peer reviewed, 2009-07)This paper presents results from experiments on flame propagation in inhomogeneous and homogeneous hydrogen-air mixtures at 1 atm in a channel. The objective of the present work is to study the ininitial phase of the flame ... -
Simulation of FA and DDT in a channel with repeated obstacles with an under-resolved mesh
(Conference object; Peer reviewed, 2009) -
Simulation of flame acceleration in an obstructed tube with LES
(Conference object; Peer reviewed, 2007) -
Solving random walk recursions in the plane using separation of variables and Fourier analysis
(Professional article, 2009-04-21)The aim of this article is first of all to show how to solve a two-dimensional random walk problem on an arbitrary rectangle with certain boundary conditions, using separation of variables and discrete Fourier analysis. ... -
Industry/college cooperation on undergraduate project work as a college revenue source
(Conference report, 2007)Since 1994, the Norwegian Ministry for Education and Research has required government supported universities and colleges to find additional sources of income. For Telemark University College (TUC) in Porsgrunn, senior ... -
Recruiting engineering students from vocational school
(Conference report, 2003)By the consent of the Norwegian Ministry of Education and Research, Telemark University College (TUe), Porsgrunn, Norway, this fall semester started a pilot class in electrical engineering recruiting solely from vocational ... -
Carbon dioxide emission reduction by increased utilization of waste-derived fuels in the cement industry
(Conference report, 2007)Considerable reductions in Norway's emissions of greenhouse gases like CO2 are required to meet the commitments of the Kyoto Protocol. CO2 emissions from cement clinker production originate from decarbonation of limestone ... -
Investment cost estimates and investment decisions
(Journal article; Peer reviewed, 2002)When evaluating new investment projects, oil companies traditionally use the discounted cashflow method. This method requires expected cashflows in the numerator and a risk-adjusted required rate of return in the denominator ... -
Nosé-Hoover simulations of aqueous mixtures of small alcohols
(Doctoral thesis; Peer reviewed, 1996)We have performed constant energy and constant temperature equilibrium molecular dynamics simulations of model liquids of water, methanol, and ethanol, and of the binary aqueous mixtures of the alcohols at mole fractions ... -
Durability of selected membrane materials when exposed to chlorine gas
(Doctoral thesis; Peer reviewed, 2001)This thesis is focusing on the durability of selected membrane materials when exposed to chlorine gas in the temperature range 30-100°C. Studies of the changes of membrane separation properties and the mechanisms promoting ... -
Hydrogen gas explosions in pipelines, modeling and experimental investigations
(Doctoral thesis; Peer reviewed, 2006)Gas explosions in closed pipes with a single obstacle have been investigated both numerically and experimentally. Most of the work is related to hydrogen and air mixtures, but other fuels have also been used. At the present ... -
The impact of staged combustion on the operation of a precalciner cement kiln
(Doctoral theses at NTNU;1999:89, Doctoral thesis; Peer reviewed, 1999)In this thesis, the impact of staged combustion on the operation of a precalciner cement kiln, is considered. Mathematical modelling and full-scale experiments at the Norcem cement works in Brevik, Norway, is the basis for ... -
Burning chamber installation for increased use of alternative fuels at Norcem Brevik, Norway
(Conference report, 2006) -
Assessment of mercury emission at Norcem's cement kiln by use of 203 Hg tracer
(Conference report, 2005)In manufacture of cement clinker, mercury (Hg) is introduced in the cement kiln system via the fuels and as constituents in the raw materials, i.e. limestone, iron ore, etc. The permissible emission of Hg to air is very ... -
Assessment of sulphur emission at Norcem's cement kiln by use of 35S-tracer
(Conference report, 2001)Although sulphur is not a major reacting species in making cement clinker, it is introduced as a pollutant in both the energy carrier (oil, coke, coal, household waste) and in the reactants (chalk, silica). Due to the ... -
Effect of alternative fuel properties on NOx reduction
(Conference report, 2002)Today we see a substantial increase in the use of alternative fuels in the cement industry. The prospect of reduction in fuel costs and the environmental benefits of waste to energy conversion are the driving forces. For ... -
Energy recovery from wastes : experience with solid alternative fuels combustion in a precalciner cement kiln
(Conference report, 2001)Today virtually all cement clinker burning processes take place in rotary kilns. A mixture of calcareous and argilaceous materials is heated to a temperature of about 1450 °C. In this process decarbonation followed by ...