Blar i Institutt for energi og prosessteknikk på tidsskrift "Energy Procedia"
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Convective Heat Transfer between Rooms in Nordic Passive Houses
(Journal article; Peer reviewed, 2015)In highly-insulated buildings such as passive houses, the space-heating distribution subsystem can be simplified by reducing the number of heat emitters. In this context, the bi-directional flow through open doorways is ... -
Design and Development of Solar Thermal Injera Baking: Steam Based Direct Baking
(Journal article; Peer reviewed, 2014)Ethiopia, the second most populated country in Africa, meets 96% of its energy need from bio-mass and majority of this energy goes entirely to Injera baking. Injera, a pan-cake like bread that is consumed by most of the ... -
Design of Steam Cycles for Oxy-combustion Coal based Power Plants with Emphasis on Heat Integration
(Journal article; Peer reviewed, 2014)The Oxy-combustion method of CO2 capture is considered to have several advantages over other methods for CO2 capture from coal based power plants. The capture process is energy intensive and hence expensive. Heat integration ... -
Dynamic Process Model Development and Validation with Transient Plant Data Collected from an MEA Test Campaign at the CO2 Technology Center Mongstad
(Journal article; Peer reviewed, 2017)This work focuses on the development and validation of a dynamic process model of the post-combustion CO2 chemical absorption process with temperature swing absorption (TSA) using aqueous monoethanolamine (MEA) as solvent. ... -
Effect of Temperature and Duration of Torrefaction on the Thermal Behavior of Stem Wood, Bark, and Stump of Spruce
(Journal article; Peer reviewed, 2017)In this work the torrefaction of different parts of Norway spruce (stem wood, bark, and stump) was studied. Three different torrefaction temperatures were applied: 225, 275, and 300 °C with 30 and 60 minutes isothermal ... -
Experimental Investigations of Impurity Impact on CO2 Mixture Phase Equilibria
(Journal article; Peer reviewed, 2014)A facility designed for precise measurements of phase equilibria of CO2-rich mixtures relevant for CCS conditioning and transport is demonstrated. The setup aims for high accuracy in pressure, temperature, and composition ... -
Experimental study on power curtailment of three in-line turbines
(Journal article; Peer reviewed, 2017)A dataset of wind tunnel power and wake flow measurements on a setup of three aligned model wind turbines is presented. The power outputs of the three turbines are in good agreement with measurements from a full-scale wind ... -
Exploring the CO2-Impact for Building Height; A Study on Technical Building Installations
(Journal article; Peer reviewed, 2016)Building tall typically requires a different operational energy demand and additional material. The purpose of this article is to analyze the adaption of technical systems to increased building height with particular ... -
Fast hydrothermal liquefaction of native and torrefied wood
(Journal article; Peer reviewed, 2017)The work presented in this paper aimed to examine the effect of heating rate on the bio-crude yield of wood hydrothermal liquefaction. Three different heating methods were developed, resulting in heating rates ranging from ... -
Flexible Operation of an IGCC Plant Coproducing Power and H2 with CO2 Capture through Novel PSA-based Process Configurations
(Journal article; Peer reviewed, 2017)The coproduction of power and H2 in an integrated gasification combined cycle (IGCC) plant with CO2 capture demonstrated to entail interesting potentials in terms of flexible operations. The possibility to shift between ... -
Flow pattern transitions in and hysteresis effects of falling film flow over horizontal tubes related to LNG heat exchangers
(Journal article; Peer reviewed, 2015)Spiral wound heat exchangers with horizontal tube configurations are used extensively in the chemical, refrigeration, petroleum and food industry, and are core components in many natural gas liquefaction plants. For improved ... -
Fluid selection and thermodynamic optimization of organic Rankine cycles for waste heat recovery applications
(Journal article; Peer reviewed, 2017)Organic Rankine cycles are effective to convert waste heat to power. One of the advantages and challenges of these cycles is that the most suitable working fluid and cycle configuration have to be selected for every ... -
Frictional Pressure Drop for Two-phase Flow of Carbon Dioxide in a Tube: Comparison between Models and Experimental Data
(Journal article; Peer reviewed, 2014)We compare models for two-phase frictional pressure drop with experimental data for pure CO2 taken in a tube of 10 mm inner diameter. The flow was nearly adiabatic, and the mass fluxes ranged from 1058 to 1663 kg/(m2 s), ... -
Full Plant Scale Analysis of Natural Gas Fired Power Plants with Pre-Combustion CO2 Capture and Chemical Looping Reforming (CLR)
(Journal article; Peer reviewed, 2017)In this study, first of its kind complete plant scale integration of pre-combustion CO2 capture method with Chemical Looping Reforming (CLR) of Natural Gas (NG), Water Gas Shift (WGS) process, CO2 capture and CO2 compression ... -
Fundamental Modeling of a Membrane Reactor with in Situ Hydrogen Separation and Combustion
(Journal article; Peer reviewed, 2013)In this work we consider a membrane reactor with catalytic steam methane reforming and/or water gas shift on the feed side, hydrogen separation and direct combustion of hydrogen on the permeate side, where the ultimate ... -
Gasification of High Heating-rate Biomass-derived Chars at Elevated Temperatures
(Journal article; Peer reviewed, 2017)In this study, gasification behavior of high heating-rate chars were investigated using an entrained flow reactor with an optical particle-sizing pyrometer. Two biomass chars produced from forest residue and torrefied ... -
High-Rise Timber Buildings as a Climate Change Mitigation Measure - A Comparative LCA of Structural System Alternatives
(Journal article; Peer reviewed, 2016)This paper reports on a study examining the potential of reducing greenhouse gas (GHG) emissions from the building sector by substituting multi-storey steel and concrete building structures with timber structures. Life ... -
Identifying operational requirements for flexible CCS plant in future energy systems
(Journal article; Peer reviewed, 2016)This paper aims at a discussion of operational requirements for thermal power plants with carbon capture and storage in terms of their interaction with the power system, in regions with high penetration of variable renewable ... -
Impact of Torrefaction on Woody Biomass Properties
(Journal article; Peer reviewed, 2017)In this work, Norway spruce stem wood, stump and bark were torrefied in a tubular reactor. The effects of feedstock type and torrefaction process parameters such as torrefaction temperature and residence time on the ... -
Innovation in a heterogeneous CCS research centre, managerial and organizational challenges
(Journal article; Peer reviewed, 2012)Recently, the Norwegian authorities have established a number of Centres for Environment-friendly Energy Research (CEER), intended to develop new knowledge, foster breakthrough technology and promote innovation in order ...