Browsing NTNU Open by Author "Skreiberg, Øyvind"
Now showing items 21-40 of 64
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Comprehensive Compositional Study of Torrefied Wood and Herbaceous Materials by Chemical Analysis and Thermoanalytical Methods
Barta-Rajnai, Eszter; Jakab, Emma; Sebestyén, Zoltán; May, Zoltán; Barta, Zsolt; Wang, Liang; Skreiberg, Øyvind; Grønli, Morten; Bozi, Janos; Czégény, Zsuzsanna (Journal article; Peer reviewed, 2016)In this work, the torrefaction of three biomass materials, black locust wood, wheat, and rape straw, was studied at various temperatures: 200, 225, 250, 275, and 300 °C. The thermal stability and formation of the decomposition ... -
Cooling aerosols and changes in albedo counteract warming from CO2 and black carbon from forest bioenergy in Norway
Arvesen, Anders; Cherubini, Francesco; del Alamo Serrano, Gonzalo; Astrup, Rasmus Andreas; Becidan, Michael; Belbo, Helmer; Goile, Franziska; Grytli, Tuva; Guest, Geoffrey; Lausselet, Carine; Rørstad, Per Kr.; Rydså, Line; Seljeskog, Morten; Skreiberg, Øyvind; Vezhapparambu, Veena Sajith; Strømman, Anders Hammer (Journal article; Peer reviewed, 2018)Climate impacts of forest bioenergy result from a multitude of warming and cooling effects and vary by location and technology. While past bioenergy studies have analysed a limited number of climate-altering pollutants and ... -
Dampening of wood batch combustion heat release using a phase change material heat storage: Material selection and heat storage property optimization
Kristjansson, Kolbeinn Jakob; Næss, Erling; Skreiberg, Øyvind (Journal article; Peer reviewed, 2016)The use of wood stoves for space heating in energy effective residential buildings can be problematic due to the batch combustion giving a highly transient heat production and the limited regulation of the combustion ... -
Detailed operational mapping of a grate fired Biomass combustion plant for improved combustion process control
Khalil, Roger Antoine; Malik, Azhar; Ku, Xiaoke; Skreiberg, Øyvind; Fossum, Morten; Becidan, Michael; Løvås, Terese (Journal article; Peer reviewed, 2016)Biomass combustion plants in Norway are facing stricter emission regulations and lower profitability, mostly due to low energy prices. Hence, performance optimization through improved combustion process control and/or ... -
Drying of Thermally Thick Wood Particles: A Study of the Numerical Efficiency, Accuracy, and Stability of Common Drying Models
Haberle, Inge; Haugen, Nils Erland L; Skreiberg, Øyvind (Journal article; Peer reviewed, 2017)The primary focus of this paper is on studying different numerical models for drying of wet wood particles. More specifically, the advantages and disadvantages of the models, with respect to numerical efficiency, stability, ... -
Effect of carbonization conditions on CO2 gasification reactivity of biocarbon
Wang, Liang; Alsaker, Nicolai Etwin; Skreiberg, Øyvind; Hovd, Benedicte (Journal article; Peer reviewed, 2017)Substituting fossil reductants with biocarbon is a promising way for reducing greenhouse gas emissions and increase sustainability of the metallurgical industry. Biocarbon can be produced from a wide range of raw biomass ... -
EFFECT OF STORAGE TIME AND CONDITIONS ON BIOMASS CHARCOAL PROPERTIES
Wang, Liang; Hu, Kathryn; Higashi, Charissa; Skreiberg, Øyvind; Myrvågnes, Viktor; Grønli, Morten; Antal, Michael Jerry; Várhegyi, Gábor (Journal article; Peer reviewed, 2015)In this work, effects of storage time and conditions on the properties of one woody charcoal were studied. Analyses results showed that the volatile matter content of the charcoal samples collected from the bottom section ... -
Effect of Temperature and Duration of Torrefaction on the Thermal Behavior of Stem Wood, Bark, and Stump of Spruce
Barta-Rajnai, Eszter; Wang, Liang; Sebestyén, Zoltán; Barta, Zsolt; Khalil, Roger Antoine; Skreiberg, Øyvind; Grønli, Morten; Jakab, Emma; Czégény, Zsuzsanna (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 ... -
Effect of torrefaction on physiochemical characteristics and grindability of stem wood, stump and bark
Wang, Liang; Barta-Rajnai, Eszter; Skreiberg, Øyvind; Khalil, Roger Antoine; Czégény, Zsuzsanna; Jakab, Emma; Barta, Zsolt; Grønli, Morten (Journal article; Peer reviewed, 2017)In this work, Norway spruce stem wood, stump and bark were torrefied in a bench scale tubular reactor at 225, 275 and 300 °C with two residence times (30 and 60 min). Effect of torrefaction on general properties, chemical ... -
Effects of wet torrefaction on reactivity and kinetics of wood under air combustion conditions
Bach, Quang Vu; Tran, Khanh-Quang; Skreiberg, Øyvind; Khalil, Roger Antoine; Phan, N. Anh (Journal article; Peer reviewed, 2014)This work continues our assessment of wet torrefaction for energy applications, looking at effects of the process parameters (temperature, holding time and pressure) on the reactivity and intrinsic kinetics of wood under ... -
Evaluation of a New System Combining Wood-Burning Stove, Flue Gas Heat Exchanger and Mechanical Ventilation with Heat Recovery in Highly-Insulated Houses
Cablé, Axel; Georges, Laurent; Peigné, Pierre; Skreiberg, Øyvind; Druette, Lionel (Journal article; Peer reviewed, 2019)The performance of an innovative flue gas heat exchanger (FGHE) located at the exit of a wood-burning stove (log or pellet) to pre-heat ventilation air has been assessed for highly insulated detached houses. For this ... -
Experimental and Numerical Studies on Two-Stage Combustion of Biomass
Houshfar, Ehsan (Doctoral Theses at NTNU, 1503-8181; 2012:87, Doctoral thesis, 2012)In this thesis, two-stage combustion of biomass was experimentally/numerically investigated in a multifuel reactor. The following emissions issues have been the main focus of the work: 1- NOx and N2O 2- Unburnt species ... -
Experimental investigation on NOx reduction by primary measures in biomass combustion: straw, peat, sewage sludge, forest residues and wood pellets
Houshfar, Ehsan; Løvås, Terese; Skreiberg, Øyvind (Journal article; Peer reviewed, 2012)An experimental investigation was carried out to study the NOx formation and reduction by primary measures for five types of biomass (straw, peat, sewage sludge, forest residues/Grot, and wood pellets) and their mixtures. ... -
Experimental Study on Charcoal Production from Woody Biomass
Wang, Liang; Skreiberg, Øyvind; Van Wesenbeech, Sam; Grønli, Morten; Antal, Michael Jerry (Journal article; Peer reviewed, 2016)In the present work, effects of process conditions on char and fixed carbon yields from four woody biomasses were studied. The influence of the particle size, sample mass, and pressure on experimental values of char and ... -
Fast hydrothermal liquefaction of native and torrefied wood
Tran, Khanh-Quang; Klemsdal, Aksel Junge; Zhang, Wennan; Sandquist, Judit; Wang, Liang; Skreiberg, Øyvind (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 ... -
Impact of Torrefaction on Woody Biomass Properties
Wang, Liang; Barta-Rajnai, Eszter; Skreiberg, Øyvind; Khalil, Roger Antoine; Czégény, Zsuzsanna; Jakab, Emma; Barta, Zsolt; Grønli, Morten (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 ... -
Investigation of an Innovative Latent Heat Storage Concept in a Stovepipe
Sevault, Alexis; Soibam, Jerol; Haugen, Nils Erland L; Skreiberg, Øyvind (Journal article; Peer reviewed, 2018)Latent heat storage (LHS) is a promising concept for small-scale batch combustion. One example is wood stoves, which rely on a batch combustion process that yields a transient heat production with high peak effect. A ... -
Investigation on Ash Slagging Characteristics during Combustion of Biomass Pellets and Effect of Additives
Wang, Liang; Skjevrak, Geir; Skreiberg, Øyvind; Wu, Hongwei; Nielsen, Henrik Kofoed; Hustad, Johan Einar (Journal article; Peer reviewed, 2017)This study reports a systematic investigation into ash slagging behavior during combustion of barley straw and barley husk pellets with or without additives in a residential pellet burner. The slagging tendencies of the ... -
Measurement of the Wood Stove Impact on the Electric Power Consumption of a Norwegian Detached House
Mohammadabadi, Abolfazl; Skreiberg, Øyvind; Georges, Laurent Francis Ghislain (Journal article; Peer reviewed, 2023)Wood stoves are commonly used as space heating systems in Norwegian houses. However, the specific impact of wood stoves on electric power remains relatively unexplored and is investigated in our study. We also aim to reveal ... -
Numerical models for thermochemical degradation of thermally thick woody biomass, and their application in domestic wood heating appliances and grate furnaces
Haberle, Inge; Skreiberg, Øyvind; Lazar, Joanna; Haugen, Nils Erland L (Journal article; Peer reviewed, 2017)This paper reviews the current state-of-the-art of numerical models used for thermochemical degradation and combustion of thermally thick woody biomass particles. The focus is on the theory of drying, devolatilization and ...