• Sizing and performance analyses of a combined heating and cooling system with the integration of short- and long-term storages 

  Shakerin, Mohammad; Eikeskog, Vilde; Li, Yantong; Harsem, Trond Th.; Nord, Natasa (Peer reviewed; Journal article, 2021)

  Technological advancements in the utilization of renewable energy sources have unveiled potentials for increasing building energy efficiency. Integrating heat pump-based energy systems with thermal storages is a suitable ...

• Optimisation of flexible operation of natural gas combined cycles with postcombustion CO2 capture 

  Pazos, Jairo Rúa (Doctoral theses at NTNU;2021:184, Doctoral thesis, 2021)

  Anthropogenic greenhouse gas emissions have continuously grown since the Industrial Revolution. Global warming is the result of increasing concentrations of these gases in the atmosphere, which create imbalances between ...

• Coupled Fluid–Solid Numerical Simulation for Flow Field Characteristics and Supporting Performance of Flexible Support Cylindrical Gas Film Seal 

  Sun, Junfeng; Liu, Meihong; Xu, Zhen; Liao, Taohong; Hu, Xiangping; Li, Yuxian; Wang, Juan (Peer reviewed; Journal article, 2021)

  A new type of cylindrical gas film seal (CGFS) with a flexible support is proposed according to the working characteristics of the fluid dynamic seal in high-rotational-speed fluid machinery, such as aero-engines and ...

• A highly innovative yet cost-effective multi-generation energy system for net-zero energy buildings 

  Arabkoohsar, Ahmad; Behzadi, Amirmohammad; Nord, Natasa (Peer reviewed; Journal article, 2021)

  This study introduced an innovative yet feasible and cost-effective solution to make a big step forward in the state-of-art of smart energy buildings and obtain a real meaning of net-zero energy building. In this study, ...

• Varying Ignition Quality of a Fuel for a HCCI Engine Using a Photochemically-Controlled Additive: The Development of a ‘Smart’ Fuel 

  Emberson, David; Sandquist, Judit; Løvås, Terese; Schönborn, Alessandro; Saanum, Inge (Peer reviewed; Journal article, 2021)

  This study examines the possibility to provide control over ignition timing in a homogeneous charge compression ignition engine (HCCI) using a fuel additive whose molecular structure can be adapted upon exposure to UV ...

• Soil desiccation trends after afforestation in the Loess Plateau of China 

  Wang, Jing; Zhao, Wenwu; Jia, Lizhi; Hu, Xiangping; Cherubini, Francesco (Journal article; Peer reviewed, 2021)

• Waste heat to Hydrogen using Reverse Electrodialysis 

  Raka, Yash Dharmendra (Doctoral theses at NTNU;22021:169, Doctoral thesis, 2021)

  In current times the research across the globe is focused on carbon-free energy sources that can drive the economy in future. One of the promising ways to achieve this is to have demand-based sustainable energy storage ...

• Online measurements of fluoride ions in proton exchange membrane water electrolysis through ion chromatography 

  Marocco, Paolo; Sundseth, Kyrre; Aarhaug, Thor Anders; Lanzini, Andrea; Santarelli, Massimo; Barnett, Alejandro Oyarce; Thomassen, Magnus (Peer reviewed; Journal article, 2021)

  This work investigates the online monitoring of fluoride ion concentration in proton exchange membrane water electrolysers (PEMWE) effluent water using an automated ion chromatography (IC) setup. Prototype catalyst coated ...

• Inertial torque on a small spheroid in a stationary uniform flow 

  Jiang, Fengjian; Lihao, Zhao; Andersson, Helge Ingolf; Gustavsson, Kristian; Pumir, Alain; Mehlig, Bernhard (Peer reviewed; Journal article, 2021)

  How anisotropic particles rotate and orient in a flow depends on the hydrodynamic torque they experience. Here we compute the torque acting on a small spheroid in a uniform flow by numerically solving the Navier-Stokes ...

• Sonochemical and sonoelectrochemical conversion of CO2 into hydrocarbons 

  Islam, Md Hujjatul (Doctoral theses at NTNU;2021:158, Doctoral thesis, 2021)

  Carbon dioxide (CO2) is one of the major greenhouse gas (GHG) contributors to global climate change. Combustion of fossil fuels accounts for approximately 80-90 % of the global CO2 emission, which over the last decade, has ...

• Optimal combination of bioenergy and solar photovoltaic for renewable energy production on abandoned cropland 

  Leirpoll, Malene Eldegard; Næss, Jan Sandstad; Cavalett, Otávio; Dorber, Martin; Hu, Xiangping; Cherubini, Francesco (Peer reviewed; Journal article, 2021)

  Ambitious climate change mitigation scenarios require large-scale deployment of bioenergy and solar photovoltaics. Utilizing recently abandoned cropland for renewable energy production is a promising option for energy ...

• Cascaded Organic Rankine Cycles (ORCs) for Simultaneous Utilization of Liquified Natural Gas (LNG) Cold Energy and Low-Temperature Waste Heat 

  Liu, Fuyu; Hu, Xiangping; Yu, Haoshui; Zhang, Baosheng (Peer reviewed; Journal article, 2020)

  Liquified Natural Gas (LNG) is a good way to transport natural gas from suppliers to end consumers. LNG contains a huge amount of cold energy due to the energy consumed in the liquefaction process. Generally, the LNG cold ...

• CuO–NiO/Co3O4 hybrid nanoplates as highly active catalyst for ammonia borane hydrolysis 

  Liao, Jinyun; Feng, Yufa; Lin, Weimin; Su, Xinlong; Ji, Shan; Li, Liling; Zhang, Wanling; Pollet, Bruno; Li, Hao (Peer reviewed; Journal article, 2020)

  Dehydrogenation of hydrogen-rich chemicals, such as ammonia borane (AB), is a promising way to produce hydrogen for mobile fuel cell power systems. However, the practical application has been impeded due to the high cost ...

• Effect of T-groove Parameters on Steady-State Characteristics of Cylindrical Gas Seal 

  Sun, Junfeng; Liu, Meihong; Xu, Zhen; Liao, Taohong; Hu, Xiangping (Peer reviewed; Journal article, 2020)

  Gas film seal technology is becoming increasingly important as an advanced new rotary shaft seal technology in aviation engines and industrial gas turbines. In this paper the impacts of several parameters of T-groove ...

• Chemical Potential Differences in the Macroscopic Limit from Fluctuations in Small Systems 

  Bråten, Vilde; Wilhelmsen, Øivind; Schnell, Sondre Kvalvåg (Peer reviewed; Journal article, 2021)

  We present a new method for computing chemical potential differences of macroscopic systems by sampling fluctuations in small systems. The small system method, presented by Schnell et al. [Schnell et al., J. Phys. Chem. ...

• The effect of Stefan flow on Nusselt number and drag coefficient of spherical particles in non-isothermal gas flow 

  Jayawickrama, Thamali R.; Haugen, Nils Erland L; Bäbler, Matthâus Ulrich; Chishty, Muhammad Aqib; Umeki, Kentaro (Peer reviewed; Journal article, 2021)

  A Stefan flow can be generated during a phase change or reactions of a particle immersed in a fluid. This study investigates the effect of Stefan flow on the exchange of momentum (drag coefficient (CD)) and heat transfer ...

• A novel monitoring and modelling technique for energy-related occupant behaviour 

  Dziedzic, Jakub Wladyslaw (Doctoral theses at NTNU;2021:143, Doctoral thesis, 2021)

  The present work focuses on the development of a novel application that aims to better understand energy-related indoor occupant behaviour (OB). The thesis briefly introduces the key features of OB, presents the current ...

• Optimal scheduling of flexible thermal power plants with lifetime enhancement under uncertainty 

  Rúa, Jairo; Verheyleweghen, Adriaen; Jäschke, Johannes; Nord, Lars O. (Peer reviewed; Journal article, 2021)

  Renewable energy sources have been the focal point to decarbonise the power sector. The large deployment of these intermittent power generation units requires mechanisms to balance the grid. Thermal power plants can provide ...

• A metric for spatially explicit contributions to science-based species targets 

  Mair, Louise; Bennun, L; Brooks, Thomas M.; Butchart, Stuart H. M.; Bolam, Friederike C.; Burgess, N.D.; Ekström, J; Milner-Gulland, E. J.; Hoffmann, M; Ma, K; Macfarlane, Nicholas; Raimondo, D C; Rodrigues, ASL; Shen, X; Strassburg, Bernardo BN; Beatty, C R; Gómez-Creutzberg, C; Iribarrem, A; Irmadhiany, M; Lacerda, Eliana; Mattos, B C; Parakkasi, K; Tognelli, M F; Bennett, E; Bryan, C; Carbone, Giulia; Chaudhary, Abhishek; Eiselin, M; da Fonseca, GAB; Galt, R; Geschke, Arne; Glew, Louise; Goedicke, R; Green, J M H; Gregory, Richard D.; Hill, S L L; Hole, David G.; Hughes, Jonathan; Hutton, Jonathan; Keijzer, M P W; Navarro, Laetitia M.; Nic Lughadha, E; Plumptre, Andrew J.; Puydarrieux, P; Possingham, HP; Rankovic, A; Regan, E C; Rondinini, Carlo; Schneck, J D; Siikamäki, J; Sendashonga, Cyriaque N.; Seutin, G; Sinclair, Samuel Justin; Skowno, A L; Soto-Navarro, C A; Stuart, SN; Temple, HJ; Vallier, A; Verones, Francesca; Viana, L R; Watson, J; Bezeng, S; Böhm, Monika; Burfield, I J; Clausnitzer, V; Clubbe, C; Cox, N A; Freyhof, J.; Gerber, L R; Hilton-Taylor, C; Jenkins, Richard; Joolia, A; Joppa, L N; Koh, L P; Lacher, TE; Langhammer, P F; Long, Barney; Mallon, David; Pacifici, Michela; Polidoro, BA; Pollock, C M; Rivers, M C; Roach, N S; Rodríguez, J P; Smart, Jane; Young, Bruce; Hawkins, F; McGowan, Philip J. K. (Peer reviewed; Journal article, 2021)

  The Convention on Biological Diversity’s post-2020 Global Biodiversity Framework will probably include a goal to stabilize and restore the status of species. Its delivery would be facilitated by making the actions required ...

• Demonstration of Swing adsorption cluster concept (SARC) for CO2 capture 

  Dhoke, Chaitanya (Doctoral theses at NTNU;2021:148, Doctoral thesis, 2021)

  Adsorption-based post-combustion CO2 capture is enjoying significant research attention due to its wide applicability within the power and industrial sectors and its ability to retrofit existing infrastructure. Important ...

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