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Patient Specific Numerical Simulation of Flow in the Human Upper Airways for Assessing the Effect of Nasal Surgery
(Chapter, 2017)The study is looking into the potential of using computational fluid dynamics (CFD) as a tool for predicting the outcome of surgery for alleviation of obstructive sleep apnea syndrome (OSAS). From pre- and post-operative ... -
Paving the way for sustainable decarbonization of the European cement industry
(Peer reviewed; Journal article, 2024)Cement production is a main source of carbon emissions. Decarbonization options exist, but their climate change mitigation potential, feasibility and environmental implications are still unclear. Here we assess 15 ... -
Pd/CeO2 catalysts as powder in a fixed-bed reactor and as coating in a stacked foil microreactor for the methanol synthesis.
(Journal article; Peer reviewed, 2016)Pd/CeO2 as a catalyst for methanol synthesis has been studied in a microreactor consisting of 14 structured foils in a fixed-bed laboratory reactor. Methanol synthesis was carried out at 80 bar and 300 °C with a syngas ... -
Peltier effects in lithium-ion battery modeling
(Peer reviewed; Journal article, 2021)A high battery temperature has been shown to be critical for lithium-ion batteries in terms of performance, degradation, and safety. Therefore, a precise knowledge of heat sources and sinks in the battery is essential. We ... -
Pelton Turbine - Model Test of a Runner
(Master thesis, 2015)Even though the Pelton turbine is more than a 100-year-old invention, there is still a lack of knowledge regarding the flow inside the bucket. A deeper understanding of the influence of bucket design on the flow behavior ... -
Performance analysis of a CO2-ice heat pump
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Performance analysis of an active diffuser in mixing ventilation for cell office by using numerical approach
(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 ... -
The Performance Analysis of an Integrated CO2 Refrigeration System with Multi-Ejectors Installed in a Supermarket
(Peer reviewed; Journal article, 2022)The field data from an integrated CO2 refrigeration system installed in a supermarket located north of the capital of Lisbon was analyzed. The goal was to demonstrate the effect and performance of multi-ejectors on a ... -
Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers
(Journal article; Peer reviewed, 2016)In order to decrease the earth's energy imbalance degree, a R744 ground source heat pump system (GSHPS) with air-cooled and water-cooled gas coolers was designed, and the performances of this system were analyzed numerically. ... -
Performance Analysis of Ball Mill Liner Based on DEM-FEM Coupling
(Peer reviewed; Journal article, 2020)In the paper, based on the finite element-discrete element method coupling and the coupled bionics theory, four lifting bar models with coupled bionic surface structures, such as smooth, transverse stripe, longitudinal ... -
Performance analysis of CO2 refrigeration systems in Nordic supermarkets
(Master thesis, 2020)Hydrofluorkarboner erstattes med naturlige kjølemedier i matvareindustrien. Forskning på å erstatte ikke-naturlige kjølemedier med CO2 pågår. Stadig flere supermarkeder i Nord-Europa har kjølesystemer basert på CO2. Faglig ... -
Performance analysis of heat and energy recovery ventilators using exergy analysis and nonequilibrium thermodynamics
(Journal article; Peer reviewed, 2018)The increased attention to energy savings has contributed to more widespread use of energy recovery systems for building ventilation. We investigate the efficiency of such systems under different outdoor conditions using ... -
Performance analysis of high temperature heat pumps and thermal energy storages for a dairy
(Chapter, 2022)This paper analyses the performance of the integrated energy system of an existing dairy in Bergen, Norway. The investigated dairy has an innovative solution for the thermal process supply by using only heat pumps and ... -
Performance Analysis of Prototype Residential CO2 Heat Pump
(Master thesis, 2020)Varmepumper er i dag i svært liten grad benyttet til oppvarming av tappevann i norske boliger. Dette handler i stor grad om at det ikke har hensiktsmessig latt seg gjøre med de konvensjonelle varmepumpene som bruker ... -
Performance analysis of solar assisted R744 ground source heat pump in different climates
(Master thesis, 2014)Som verden står overfor alvorlige miljø- og energikrise, står bergvarmepumpe ut som en effektiv air condition-systemet som kan levere både kjøling og oppvarming belastning for bygningen. Tatt i betraktning den miljømessige ... -
Performance and wake development behind two in-line and offset model wind turbines - "Blind test" experiments and calculations
(Journal article; Peer reviewed, 2014)This is a report on data presented at the ”Blind test 3” Workshop organized jointly by Nowitech and Norcowe in Bergen, December 2013. A number of research groups were invited to predict the performances and the wake ... -
Performance and wake measurements of a Savonius wind turbine
(Master thesis, 2018)In this study, the performance, drag and wake characteristics of a vertical axis Savonius wind turbine are investigated experimentally. The turbine is drag driven and has a helical configuration, making the top rotated 180 ... -
Performance and wake of a Savonius vertical‐axis wind turbine under different incoming conditions
(Journal article; Peer reviewed, 2019)In this study, the performance, drag, and horizontal midplane wake characteristics of a vertical‐axis Savonius wind turbine are investigated experimentally. The turbine is drag driven and has a helical configuration, with ... -
Performance assessment of all-air heating in an office cubicle equipped with an active supply diffuser in a cold climate
(Journal article; Peer reviewed, 2019)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 ...