Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 1934-1953 av 4133
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Ice formation and growth in supercooled water–alcohol mixtures: Theory and experiments with dual fiber sensors
(Peer reviewed; Journal article, 2020)Increased knowledge on fluid-solid phase transitions is needed, both when they are undesired and can impair processes operation, and when strict control is required in fields such as food technology, the pharmaceutical ... -
Ice particles sink below the water surface due to a balance of salt, van der Waals and buoyancy forces
(Journal article; Peer reviewed, 2018)According to the classical Archimedes’ principle, ice floats in water and has a fraction of its volume above the water surface. However, for very small ice particles, other competing forces such as van der Waals forces due ... -
Identification of Existing Challenges and Future Trends for the Utilization of Ammonia-Water Absorption–Compression Heat Pumps at High Temperature Operation
(Peer reviewed; Journal article, 2021)Decarbonization of the industrial sector is one of the most important keys to reducing global warming. Energy demands and associated emissions in the industrial sector are continuously increasing. The utilization of high ... -
Identifying emission hotspots for low carbon technology transfers
(Journal article; Peer reviewed, 2018)Data on consumption-based CO2 emissions has become increasingly available over the past years. These data raise the awareness of the link between final goods and the environmental pollution caused by upstream production ... -
Identifying important variables and profiles of domestic hot tap water energy use in Norwegian buildings by using statistical methods
(Doctoral theses at NTNU;2021:67, Doctoral thesis, 2021)Domestic hot water (DHW) systems are an integral component of buildings and a substantial consumer of energy. Due to the introduction of highly insulated structures, the share of DHW heat use in the total energy balance ... -
Identifying important variables of energy use in low energy office building by using multivariate analysis
(Journal article; Peer reviewed, 2012)The aim of the study was to identify driving variables of energy use in a low energy office building by integrating building energy management system (BEMS) and energy use data. To take a further step towards zero emission ... -
Identifying key assumptions and differences in life cycle assessment studies of lithium-ion traction batteries with focus on greenhouse gas emissions
(Journal article; Peer reviewed, 2017)The various studies that consider the life cycle environmental impacts of lithium-ion traction batteries report widely different results. This article evaluates the inventory data and results to identify the key assumptions ... -
Identifying key design parameters of the integrated energy system for a residential Zero Emission Building in Norway
(Journal article; Peer reviewed, 2016)This study examined an integrated solution of the building energy supply system consisting of flat plate solar thermal collectors in combination with a ground-source heat pump and an exhaust air heat pump for the heating ... -
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 ... -
Identifying optimal thermodynamic paths in work and heat exchange network synthesis
(Journal article; Peer reviewed, 2018)The process synthesis problem referred to as work and heat exchange networks (WHENs) is an extension of the classical heat exchanger networks problem considering only temperature and heat. In WHENs, additional properties ... -
Identifying the critical factors of transmission efficiency loss in China’s natural gas network
(Peer reviewed; Journal article, 2023)China’s market-oriented reform supports the sustainable development of energy mix and the low-carbon target, and natural gas has bridged the transition from traditional fossil energy to clean and renewable energies. The ... -
Identifying typical hourly DHW energy use profiles in a hotel in Norway by using statistical methods
(Journal article; Peer reviewed, 2019)The aim of this research is to improve the existing approaches of domestic hot water (DHW) energy use analysis in buildings. A comprehensive statistical analysis of hourly DHW energy use for a hotel in Oslo, Norway, was ... -
Idébank for bedre inneklima. FDV i skoler – viktig for helse og læringsmiljø
(Research report, 2023) -
IEA EBC annex 53: Total energy use in buildings - Analysis and evaluation methods
(Journal article; Peer reviewed, 2017)One of the most significant barriers to achieving deep building energy efficiency is a lack of knowledge about the factors determining energy use. In fact, there is often a significant discrepancy between designed and real ... -
Ignition and lean blowoff dynamics of turbulent flames in annular combustors
(Doctoral theses at NTNU;2023:165, Doctoral thesis, 2023)This thesis aims to provide experimental insights on the transient phenomena of ignition light-around and lean blowoff dynamics of turbulent flames in annular combustors. Numerous ignition experiments have been performed ... -
Ignition probability of hydrogen facilities
(Master thesis, 2023)Sikkerhet er et viktig aspekt for at hydrogen skal vokse som energibærer. I sikkerhetsrådgivning er ofte målet med en risikoanalyse å finne en tennsannsynlighet. Hvis man kombinerer tennsannsynligheten med andre parametre, ... -
Immersed boundary method for the compressible Navier-Stokes equations using high order summation-by-parts difference operators
(Chapter, 2017)A ghost-point immersed boundary method is devised for the compressible Navier–Stokes equations by employing high order summation-by-parts (SBP) difference operators. The immersed boundaries are treated as sharp interfaces ... -
Immersed boundary method for viscous compressible flows around moving bodies
(Journal article; Peer reviewed, 2018)A ghost-point immersed boundary method for the compressible Navier–Stokes equations with moving boundaries on fixed Cartesian grids is devised by employing high order summation-by-parts (SBP) difference operators. The ... -
Impact assessment of Norwegian hydropower on freshwater fish species - an LCA approach
(Master thesis, 2016)Accounting for the total environmental impacts associated with energy technologies are becoming increasingly important due to large scale development of renewable resources. In order to assess the trade-offs between large ... -
Impact from flexible operations on High Head Francis turbines
(Master thesis, 2018)Today the European energy grid contains more renewable energy sources than ever before, yet there is little to no research on how the increased amount affects the cost structure of the remaining energy sources of the grid. ...