• 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 ...

• Energy use and retrofitting potential of heat pumps in cold climate hotels 

  Smitt, Silje Marie; Tolstorebrov, Ignat; Gullo, Paride; Pardiñas, Ángel Á.; Hafner, Armin (Peer reviewed; Journal article, 2021)

  Tourism, and thereby hotels, play a crucial role in the European economy. The hotel sector features high energy consumption, which greatly contributes to the global warming effect. Thus, there is a need to investigate ...

• 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 ...

• A novel methodology for design optimization of heat recovery steam generators with flow-induced vibration analysis 

  Deng, Han; Skaugen, Geir; Næss, Erling; Zhang, Mingjie; Øiseth, Ole Andre (Peer reviewed; Journal article, 2021)

  Design of compact, lightweight, and robust heat recovery steam generators (HRSGs) is important for the implementation of offshore bottoming cycles. In this work, a novel methodology integrating flow-induced vibration ...

• Building heating applications with phase change material: A comprehensive review 

  Li, Yantong; Nord, Natasa; Xiao, Qiangqiang; Tereshchenko, Tymofii (Peer reviewed; Journal article, 2020)

  Energy crisis and environmental problems motive a variety of research strategies to increase energy efficiency, decrease stress on energy infrastructure, and consequently reduce CO2 emissions. Improving efficiency of ...

• Path-Following Methods for Calculating Linear Surface Wave Dispersion Relations on Vertical Shear Flows 

  Maxwell, Peter; Ellingsen, Simen Andreas Ådnøy (Journal article; Peer reviewed, 2020)

  The path-following scheme in Loisel and Maxwell (SIAM J Matrix Anal Appl 39(4):1726–1749, 2018) is adapted to efficiently calculate the dispersion relation curve for linear surface waves on an arbitrary vertical shear ...

• Study of pressure pulsations in a Francis turbine designed for frequent start-stop 

  Trivedi, Chirag (Journal article, 2021)

  The energy market aims for high flexibility that allows guaranteed power to the consumers with minimum carbon footprint. Over the last three decades, hydropower has been a reliable and an efficient option to meet the ...

• Model predictive control for combined cycles integrated with CO2 capture plants 

  Rúa, Jairo; Nord, Lars O.; Hillestad, Magne (Peer reviewed; Journal article, 2021)

  Flexible thermal power plants integrated with CO2 capture systems can balance the intermittent power generation of renewable energy sources with low-carbon electricity. Among these power systems, natural gas combined cycles ...

• Numerical Analysis of Flow across Brush Elements Based on a 2-D Staggered Tube Banks Model 

  Song, Xiaolei; Liu, Meihong; Hu, Xiangping; Wang, Xueliang; Liao, Taohong; Sun, Junfeng (Journal article; Peer reviewed, 2021)

  n order to improve efficiency in turbomachinery, brush seal replaces labyrinth seals widely in the secondary air system. A 2-d staggered tube bank model is adopted to simulate the gas states and the pressure character in ...

• DHW tank sizing considering dynamic energy prices 

  Nord, Natasa; Ding, Yuemin; Ivanko, Dmytro; Walnum, Harald Taxt (Peer reviewed; Journal article, 2021)

  Due to the rapid development of the building stock in Norway, the energy use in this segment is drastically increasing. Therefore, improving the energy performance of buildings becoming an urgent problem. Among technical ...

• Elucidating the role of tetraethylammonium in the silicate condensation reaction from Ab initio molecular dynamics simulations 

  Mai, Ngoc Lan; Do, Ha T.; Hoang, Nguyen-Hieu; Nguyen, Anh H.; Tran, Khanh-Quang; Meijer, Evert Jan; Trinh, Thuat (Journal article; Peer reviewed, 2020)

  The understanding of the formation of silicate oligomers in the initial stage of zeolite synthesis is important. The use of organic structure-directing agents (OSDAs) is known to be a key factor in the formation of different ...

• Uniform-momentum zones in a turbulent boundary layer subjected to freestream turbulence 

  Hearst, Robert Jason; de Silva, Charitha; Dogan, Eda; Ganapathisubramani, Bharathram (Peer reviewed; Journal article, 2021)

  The instantaneous structure of a turbulent boundary layer that has developed beneath freestream turbulence (FST) was investigated with planar particle image velocimetry. Measurements were performed in the streamwise–wall-normal ...

• Fuel characterization and thermal degradation kinetics of biomass from phytoremediation plants 

  Tran, Khanh-Quang; Werle, Sebastian; Trinh, Thuat; Magdziarz, Aneta; Sobek, Szymon; Pogrzeba, Marta (Journal article; Peer reviewed, 2020)

  Biomass obtained from phytoremediation energy crops Miscanthus x giganteus and Sida hermaphrodita planted on different soils contaminated with heavy metals was thermogravimetrically studied and kinetically analyzed, assuming ...

• Development of a data-driven model to characterize the heat storage of the building thermal mass in energy planning tools 

  Georges, Laurent; Storlien, Elin; Askeland, Magnus; Lindberg, Karen Byskov (Peer reviewed; Journal article, 2021)

  In the one hand, energy planning tools compute the cost-optimal investment in the energy system minimizing life cycle costs (LCC). These tools often consider optimal control. The building (or cluster of buildings) is ...

• A multi-objective optimal design method for thermal energy storage systems with PCM: A case study for outdoor swimming pool heating application 

  Li, Yantong; Ding, Zhixiong; Shakerin, Mohammad; Zhang, Nan (Journal article; Peer reviewed, 2020)

  Traditional design methods for thermal energy storage systems (TES) with phase change material (PCM) are mostly based on worst-case scenario, which causes too large size of main components. Current optimal design methods ...

• Analysis of Wear Performance of Two Finger Seal Structure 

  Lei, Junjie; Liu, Meihong; Hu, Xiangping; Sun, Junfeng; Kang, Yuchi (Journal article; Peer reviewed, 2021)

  To reveal the wear law of parabola-shaped and arc-shaped finger seals (FSs), the wear characteristics of parabola-shaped and arc-shaped FSs were studied in this paper. Firstly, a formula for calculating the contact stress ...

• Occupant-centric miscellaneous electric loads prediction in buildings using state-of-the-art deep learning methods 

  Das, Anooshmita; Annaqeeb, Masab Khalid; Azar, Elie; Novakovic, Vojislav; kjærgaard, Mikkel B. (Peer reviewed; Journal article, 2020)

  Buildings have emerged as one of the dominant sectors when it comes to worldwide energy consumption. While a large portion of this consumption is due to the Heating, Ventilation, and Air Conditioning (HVAC) loads, a ...

• The influence of concentration and temperature on the membrane resistance of ion exchange membranes and the levelised cost of hydrogen from reverse electrodialysis with ammonium bicarbonate 

  Raka, Yash Dharmendra; Bock, Robert; Karoliussen, Håvard; Wilhelmsen, Øivind; Burheim, Odne Stokke (Peer reviewed; Journal article, 2021)

  The ohmic resistances of the anion and cation ion-exchange membranes (IEMs) that constitute a reverse electrodialysis system (RED) are of crucial importance for its performance. In this work, we study the influence of ...

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