Browsing Institutt for energi og prosessteknikk by Journals "Energy Procedia"
Now showing items 41-60 of 70
-
Integrated Techno-economic and Environmental Assessment of an Amine-based Capture
(Journal article; Peer reviewed, 2013)A systematic methodology for integrated techno-economic and environmental assessment of CCS value chains is presented and applied to assess the impact of the CO2 concentration on an amine-based post-combustion CO2 capture ... -
Lidars for Wind Tunnels - an IRPWind Joint Experiment Project
(Journal article; Peer reviewed, 2017)Measurement campaigns with continuous-wave Doppler Lidars (Light detection and ranging) developed at DTU Wind Energy in Denmark were performed in two very different wind tunnels. Firstly, a measurement campaign in a small ... -
Measured load profiles and heat use for “low energy buildings” with heat supply from district heating
(Journal article; Peer reviewed, 2017)In the development towards nearly zero energy buildings (nZEB) the load profiles for the heat demand and the heat use of the buildings are expected to be changed considerably compared to the situation today. This change ... -
Measurements of CO2-Rich Mixture Properties: Status and CCS Needs
(Journal article; Peer reviewed, 2016)In order to design and operate current and future CCS system and processes, accurate predictions of the behavior of the fluids involved is necessary. Currently, there are large knowledge gaps for fundamental properties ... -
Modelling CO2-water thermodynamics using SPUNG equation of state (EOS) concept with various reference fluids
(Journal article; Peer reviewed, 2014)Due to the continuous increase of CO2 emission to environment, the Carbon Capture and Storage (CCS) processes gained a very high importance in the last decades. One common CO2 impurity during various CCS processes is water. ... -
Multiscale modelling of packed bed chemical looping reforming
(Journal article; Peer reviewed, 2017)A comparison of reactive flows on two distinct scales is presented here (i) Particle resolved direct numerical simulation (PR-DNS), and (ii) 1D packed bed model. The PR-DNS geometry is meshed with polyhedral elements both ... -
Necessary Measures to Include more Distributed Renewable Energy Sources into District Heating System
(Journal article; Peer reviewed, 2017)Low temperature district heating (LTDH) can increase the integration of renewable and waste energy sources that have lots of reliability and acceptance issues. This article aims to identify necessary measures to enable ... -
Numerical simulations of staged biomass grate fired combustion with an emphasis on NOx emissions
(Peer reviewed; Journal article, 2015)In the present paper NOx emissions from biomass combustion was studied, with the objective to demonstrate the applicability of stationary computational fluid dynamics simulations, including a detailed representation of the ... -
Operability of Integrated Gasification Combined Cycle Power Plant with SEWGS Technology for Pre-combustion CO2 Capture
(Journal article; Peer reviewed, 2014)This paper investigates the performance of an integrated gasification combined cycle (IGCC) power plant incorporating a sorption enhanced water gas shift (SEWGS) process for pre-combustion CO2 capture at part-load conditions. ... -
Optimization of a single expander LNG process
(Journal article; Peer reviewed, 2015)A single expander process with nitrogen as refrigerant has been optimized for liquefaction of natural gas. Comparisons have been made between a simplified process model assuming constant specific heat capacities and ideal ... -
Overview on Pressure Swing Adsorption (PSA) as CO2 Capture Technology: State-of-the-Art, Limits and Potentials
(Journal article; Peer reviewed, 2017)This paper provides an insight on state-of-the-art, limits and potentials of pressure swing adsorption (PSA) as CO2 capture technology into power plants. To get a complete picture both post- and pre-combustion cases are ... -
Pipe Networks: Coupling Constants in a Junction for the Isentropic Euler Equations
(Journal article; Peer reviewed, 2015)The modelling of junctions in pipe networks with subsonic flows is discussed, where pipes are described by one-dimensional, single-phase isentropic flow models. We first study the Riemann problem in a pipe to understand ... -
Pipeline flow modelling with source terms due to leakage: The straw method
(Journal article; Peer reviewed, 2012)A numerical method for calculating the leakage flow rate through a crack in a pressurized pipeline is presented. Calculations of the flow inside, and leakage from, a pipeline with a running crack are performed. For the ... -
Preliminary Evaluation of the SPUNG Equation of State for Modelling the Thermodynamic Properties of CO2 - Water Mixtures
(Journal article; Peer reviewed, 2012)The accuracy of the extended corresponding state equation SPUNG is preliminary evaluated for the density, and Vapor Liquid Equilibrium (VLE) calculations of the CO2 -water mixtures. The evaluation is done by comparing the ... -
PVTx Modeling of CO2 Pipeline at Depressurization Conditions Using SPUNG Equation of State (EoS) with a Comparison to SRK
(Journal article; Peer reviewed, 2014)The proper modeling of CO2 depressurization is very important for the design for safety of a pipeline. One key element of the modeling process is the thermodynamics and transport properties modeling. In this work, an ... -
Simplified Space-heating Distribution Using Radiators in Super-insulated Apartment Buildings
(Journal article; Peer reviewed, 2016)The necessity to drastically reduce the space-heating (SH) needs of residential buildings in Europe has prompted the emergence of building concepts based on a super-insulated building envelope, such as the passive house ... -
Simplified Space-Heating Distribution using Radiators in Super-Insulated Terraced Houses
(Journal article; Peer reviewed, 2017)The necessity to drastically reduce the space-heating (SH) needs of residential buildings in Europe has pushed the emergence of building concepts based on a super-insulated building envelope, such as the passive house (PH) ... -
Simultaneously boosting the mass and fixed-carbon yields of charcoal from forest residue via atmospheric carbonization
(Journal article; Peer reviewed, 2017)The carbonization of various forest residues in comparison with their stem wood was studied by means of thermogravimetric analyzer operated non-isothermally at atmospheric pressure with a heating rate of 10K/min and a final ... -
Solar Energy Resource Assessment of the Geba Catchment, Northern Ethiopia
(Journal article; Peer reviewed, 2014) -
Solar Powered Heat Storage for Injera Baking
(Journal article; Peer reviewed, 2014)Ethiopia with a population of about 85 million meets 96% of its energy needs with bio-mass, charcoal, wood, animal dung and plant residues. More than 50% of this energy goes entirely on baking Injera. Injera the national ...