Browsing Institutt for energi og prosessteknikk by Title

Now showing items 417-436 of 4147

    • Bioenergy and climate change mitigation: An assessment 

      Creutzig, Felix; Ravindranath, Nijavalli H.; Berndes, Göran; Bolwig, Simon; Bright, Ryan M.; Cherubini, Francesco; Chum, Helena; Corbera, Esteve; Delucchi, Mark; Faaij, André; Fargione, Joseph; Haberl, Helmut; Heath, Garvin; Lucon, Oswaldo; Plevin, Richard; Popp, Alexander; Robledo-Abad, Carmenza; Rose, Steven; Smith, Pete; Strømman, Anders Hammer; Suh, Sangwon; Masera, Omar Raúl (Journal article; Peer reviewed, 2015)
      Bioenergy deployment offers significant potential for climate change mitigation, but also carries considerable risks. In this review, we bring together perspectives of various communities involved in the research and ...

    • Bioenergy feedstock production on abandonned agricultural land in Europe - A spatially explicit life cycle analysis 

      Giroux, Baptiste (Master thesis, 2020)
      Forlatte jordbruksareal har vist seg som de mest lovende områdene for produksjon av bioenergi som vil minimere konkurranse med arealbruk med mat og tilhørende negative sosiale og miljømessige konsekvenser. Her undersøker ...

    • Bioenergy for climate change mitigation: scale and sustainability 

      Calvin, Kathrine; Cowie, Annette; Berndes, Göran; Arneth, Almut; Cherubini, Francesco; Portugal- Pereira, Joana; Grassi, Giacomo; House, Jo; Johnson, Francis X.; Popp, Alexander; Rounsevell, Mark; Slade, Raphael; Smith, Pete (Peer reviewed; Journal article, 2021)
      Many global climate change mitigation pathways presented in IPCC assessment reports rely heavily on the deployment of bioenergy, often used in conjunction with carbon capture and storage. We review the literature on bioenergy ...

    • Biomass Charcoal Properties Changes during Storage 

      Wang, Liang; Barta-Rajnai, Eszter; Hu, Kathryn; Higashi, Charissa; Skreiberg, Øyvind; Grønli, Morten; Czégény, Zsuzsanna; Jakab, Emma; Myrvågnes, Viktor; Várhegyi, Gabor; Antal, Michael Jerry (Journal article; Peer reviewed, 2017)
      In this work, effects of storage time and conditions on the properties of one woody charcoal were studied. Prior to the storage test, the untreated charcoal was characterized by thermogravimetry/mass spectrometry (TG/MS). ...

    • Biomass combined heat and power (CHP) for electricity and district heating 

      Novakovic, Vladimir (Master thesis, 2014)
      Growing energy consumption requests development of the new energy sources and the application of new technologies in the energy sector. At the same time, the world is facing maybe the biggest challenge in human history ...

    • Biomass gasification : combustion of gas mixtures 

      Fossum, Morten (Doktoravhandlinger ved NTNU, 1503-8181; 42, Doctoral thesis, 2002)
      The work presented in this study is primarily experimental and covers the following two main areas; gasification of biomass and combustion of gas mixtures. The work on biomass gasification includes the design of a laboratory ...

    • Biomass gasification integration in recuperative gas turbine cycles and recuperative fuel cell integrated gas turbine cycles: - 

      Løver, Kristian Aase (Master thesis, 2007)
      A multi-reactor, multi-temperature, waste-heat driven biomass thermochemical converter is proposed and simulated in the process simulation tool Aspen Plus . The thermochemical converter is in Aspen Plus integrated with a ...

    • Biophysical Effects of Afforestation on Land Surface Temperature in Guangdong Province, Southern China 

      Shen, Wenjuan; He, Jiaying; He, Tao; Hu, Xiangping; Tao, Xin; Huang, Chengquan (Journal article; Peer reviewed, 2022)
      Developing effective climate mitigation strategies under global warming requires a comprehensive understanding of the biophysical mechanism of how afforestation affects the climate and environment. The planted forests in ...

    • Biorefinery of anaerobic digestate in a circular bioeconomy: Opportunities, challenges and perspectives 

      Malhotra, Milan (Peer reviewed; Journal article, 2022)
      With the ever-increasing size of anaerobic digesters (AD), the management and disposal of digestate have become a challenging task for AD operators. Anaerobic digestate is rich in nutrients and contaminants; thus, a suitable ...

    • Blade Dynamic Response for Downwind Turbines 

      Salthaug, Marie (Master thesis, 2011)
      A MATLAB script has been developed to investigate dynamics in the blades of a 10 MW downstream wind turbine, with both a tubular- and a truss tower. The classical Beam element momentum method with additional correction ...

    • Blade passage modeling strategy for hydraulic turbine 

      Gong, Ruzhi; Trivedi, Chirag; Dahlhaug, Ole Gunnar; Nielsen, Torbjørn Kristian (Journal article; Peer reviewed, 2017)
      CFD has played a significant role to investigate the performance and improve the design of hydraulic turbines; however, the improvement of CFD method demands powerful computer resources including time, CPU, memory, and ...

    • Blending and characteristics of electrochemical double-layer capacitor device assembled from plasticized proton ion conducting chitosan:dextran:NH4PF6 polymer electrolytes 

      Aziz, S. B.; Brza, M. A.; Brevik, Iver Håkon; Hafiz, M. H.; Asnawi, A. S. F. M.; Yusof, Y. M.; Abdulwahid, R. T.; Kadir, M. F. Z. (Peer reviewed; Journal article, 2020)
      This research paper investigates the electrochemical performance of chitosan (CS): dextran (DX) polymer-blend electrolytes (PBEs), which have been developed successfully with the incorporation of ammonium hexafluorophosphate ...

    • Blind test comparison of the performance and wake flow between two in-line wind turbines exposed to different turbulent inflow conditions 

      Bartl, Jan Michael Simon; Sætran, Lars Roar (Journal article; Peer reviewed, 2017)
      This is a summary of the results of the fourth blind test workshop that was held in Trondheim in October 2015. Herein, computational predictions on the performance of two in-line model wind turbines as well as the mean and ...

    • Blind test comparison on the wake behind a yawed wind turbine 

      Mühle, Franz Volker; Schottler, Jannik; Bartl, Jan Michael Simon; Futrzynski, Romain; Evans, Steve; Bernini, Luca; Schito, Paolo; Draper, Martín; Guggeri, Andrés; Kleusberg, Elektra; Henningson, Dan S.; Hölling, Michael; Peinke, Joachim; Adaramola, Muyiwa S.; Sætran, Lars Roar (Journal article; Peer reviewed, 2018)
      This article summarizes the results of the “Blind test 5” workshop, which was held in Visby, Sweden, in May 2017. This study compares the numerical predictions of the wake flow behind a model wind turbine operated in yaw ...

    • Boil-off gas handling from liquefied hydrogen storage 

      Groznik, Jan (Master thesis, 2020)
      The main objective of the thesis was to develop concepts for hydrogen boil-off gas reliquefaction. Three different processes were simulated, analyzed, and compared: helium Brayton refrigeration cycle with two helium turbine ...

    • Boiling and Condensation Heat Transfer of Zeotropic Mixtures in Smooth Tubes 

      Deng, Han (Doctoral thesis at NTNU;2016:330, Doctoral thesis, 2016)
      Boiling and condensation of mixtures are widely encountered in liquefaction of natural gas process, refrigeration systems, and other chemical and power generation industries. Zeotropic mixtures present a temperature glide ...

    • Boligventilasjon med nye filterløsninger for kjøkkenavtrekk 

      Brevik, Eirik; Kusslid, Håkon (Bachelor thesis, 2023)
      Det finnes i all hovedsak to tradisjonelle måter å håndtere matos, fuktighet, forurensninger og overskuddsvarme fra matlaging på kjøkken i boliger på. Dette involverer løsninger hvor avtrekket føres ut av kjøkkenet. Disse ...

    • The border effects and choices of competitive strategies of the provincial natural gas markets in China 

      Wang, Xiaolin; Lu, Xiangyi; Chen, Jun; Hu, Xiangping (Peer reviewed; Journal article, 2024)
      The provincial government competition is regarded as a key variable in China’s market-oriented reform to explore whether natural gas market will be integrated from segmentation. A spatial price equilibrium model with two ...

    • Bottom ash as a resource in a circular economy - A case study of metal packaging products for IVAR 

      Bjordal, Kristine (Master thesis, 2019)
      Today, the residual waste from households is sent to waste-to-energy plants, and one of the bi-products created is incineration bottom ash. This is an inhomogeneous material which undergoes minimal final treatment, and ...

    • Bottom-up modelling the residential building stock Developing a new model using BIM and cadastre data 

      Dittrich, Nils (Master thesis, 2022)
      Accurate assessment of the built environment stock and its in- and outflows are a key factor to move humanities largest material consuming sector towards a circular economy. Current models do often not take advantage of ...