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Optimal sensor placement techniques for modal identification of historical masonry structures
(Procedia Structural Integrity;, Peer reviewed; Journal article, 2022)Since destructive tests are not allowed for historical structures, numerical model updating using accelerometers has gained a lot of attraction in the last decade. Furthermore, another application of structural health ... -
Optimalisering av industribygg ved benyttelse av massivtreelementer
(Bachelor thesis, 2019)Løvenskiold Eiendom AS eier MAXBO Stormarked, og selskapet ønsket en vurdering av en eventuell benyttelse av massivtreelementer i egne industribygg. I belysning av dette, tar bacheloroppgaven for seg en analyse av hvor ... -
Optimalisering av landkarkonstruksjon
(Bachelor thesis, 2020)Klimagassutslippene fra byggenæringer er høye, noe som gir miljøskadelige konsekvenser for fremtidens generasjoner. På grunnlag av dette ble det utarbeidet bacheloroppgave for å finne optimale landkarløsninger. Dette kan ... -
Optimizing long-term park-level integrated energy system through multi-stage planning: A study incorporating the ladder-type carbon trading mechanism
(Peer reviewed; Journal article, 2024)The integrated energy system is widely acknowledged as an effective method for advancing the adoption of renewable energy sources and reducing carbon emissions. To address economic issues caused by the inconsistency between ... -
Optimum Design of RC Footings with Genetic Algorithms According to ACI 318-19
(Buildings;Volume 10, Issue 6, Journal article; Peer reviewed, 2020-06-11)Engineers usually use trial-and-error approaches for dealing with design problems where they need to find the most economical design of a structural element in terms of its material cost while satisfying all the safety ... -
OSLO 2019: A Car-free City Centre
(Journal article; Peer reviewed, 2017)In June 2016, a climate and energy strategy for Oslo was enacted by the city council. The overall climate targets adopted for Oslo 2030–2050 were to reduce greenhouse gas emissions by 50% (2030) and to zero in 2050. To ... -
Parametric analysis of ground source heat pump system for heating of office buildings in Nordic climate
(BuildSIM-Nordic 2020: Selected papers;, Conference object, 2020)This paper presents a sensitivity analysis followed by an optimization to improve the performance of a ground source heat pump (GSHP) system for an office building located in Norway, for Oslo, Stavanger, and Tromsø climatic ... -
Parametric analysis of masonry arches following a limit analysis approach: Influence of joint friction, pier texture, and arch shallowness
(Peer reviewed; Journal article, 2023)Among the most characteristic structures in historical constructions for crossing large spans are the masonry vaulted structures by utilizing their geometric stability to safely transfer the loads to supports with regard ... -
Parametric study and dynamic response analysis of three single curved discrete pontoon floating bridges
(Ships and Offshore Structures;, Peer reviewed; Journal article, 2021-06-26)In this paper, three curved floating bridge concepts with a uniform span of 500 m and different radii of curvature are proposed for the crossing of the coastal waters in Singapore. The bridge girder is supported by 4 ... -
Parametric Study of a Vertically Configured Ground Source Heat Pump System
(Journal article; Peer reviewed, 2017)Ground source heat pumps are being common in western countries in order to reduce the primary energy consumption and the corresponding greenhouse gas emissions associated with heating and cooling of buildings. In this ... -
Passive cooling performance of a test room equipped with normal and new designed Trombe walls: A numerical approach
(Sustainable Energy Technologies and Assessments;Volume 33, June, Journal article; Peer reviewed, 2019-03-29)This paper is dedicated to numerically appraise the passive cooling performance of the new designed and normal Trombe walls combined with solar chimney and water spraying system (WSS) in a test room under Yazd (Iran) desert ... -
Performance analysis of a solar thermal system coupled with a ground source heat pump in Nordic conditions
(E3S Web of Conferences;, Peer reviewed; Journal article, 2022)The main objective of this work is to investigate the energy and exergy performance of a solar assisted ground source heat pump for a school building designed according to Norwegian passive house standard. The system is ... -
Performance analysis of an active diffuser in mixing ventilation for cell office by using numerical approach
(E3S Web of Conferences;Volume 111 (2019), Journal article; Peer reviewed, 2019)Energy efficiency in buildings is nowadays considered as an essential step to reduce CO2 emissions and energy utilization. At the same time, new technologies such as building space heating using active air heating has ... -
Performance analysis of roof-mounted photovoltaic systems The case of a Norwegian residential building
(Energy Procedia;83, Journal article; Peer reviewed, 2015-12)Currently, the application of solar Photovoltaic (PV) systems on energy efficient buildings such as passive house, zero energy building (ZEB) and net-positive energy building (NPEB) is becoming increasingly attractive, ... -
Performance assessment of all-air heating in an office cubicle equipped with an active supply diffuser in a cold climate
(Building and Environment;Volume 156, June 2019, Pages 123-136, Journal article; Peer reviewed, 2019-04-12)Low-temperature space heating systems play a prominent role in improving the indoor air quality (IAQ) and thermal comfort of energy efficient buildings in cold-climate countries such as Norway. All-air heating (AAH) systems ... -
Performance-based seismic assessment of a historical masonry arch bridge: Effect of pulse-like excitations
(Peer reviewed; Journal article, 2023)Seismic analysis of historical masonry bridges is important for authorities in all countries hosting such cultural heritage assets. The masonry arch bridge investigated in this study was built during the Roman period and ... -
Phase field model for mixed mode fracture in concrete
(Peer reviewed; Journal article, 2023)Concrete is a quasi-brittle material and generally fails in mixed mode I-II fracture. The fracture energy release in mode I and mode II during crack propagation is usually different. However, the tensile test fracture ... -
Phonon Transport Characteristics of Nano-Silicon Thin Films Irradiated by Ultrafast Laser under Dispersion Relation
(Peer reviewed; Journal article, 2024)The gray model simplifies calculations by ignoring phonon polarization, but sacrifices a certain level of computational accuracy. In effect, the frequency and wavevector of phonons form complex polarization patterns, which ... -
Pipe losses : A numerical study using Computational Fluid Dynamics
(Bachelor thesis, 2018-05-22)This report contains the results from the simulations done in STAR-CCM+ to predict pipe losses, including a validation case with straight smooth/rough pipes, and smooth pipes with 90 degree bends. Results show excellent ... -
POD-interpolation based prediction of indoor airflows
(SINTEF proceedings;No 5, Journal article; Peer reviewed, 2020)This work reports a proper orthogonal decomposition (POD)-interpolation based prediction of indoor airows related to displacement ventilation. Steadystate computational uid dynamics (CFD) solution snapshots with varying ...