Browsing Institutt for energi og prosessteknikk by Title
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Rising carbon inequality and its driving factors from 2005 to 2015
(Peer reviewed; Journal article, 2023)Carbon inequality is the gap in carbon footprints between the rich and the poor, reflecting an uneven distribution of wealth and mitigation responsibility. Whilst much is known about the level of inequality surrounding ... -
Road Planning and Route Alignment Selection Criteria in the Norwegian Context
(Journal article; Peer reviewed, 2019)This paper reveals the main factors that guide road alignment design process in Norway. The goal is to discover what constitutes the main priorities for road planners, how these priorities are ranked when it comes to ... -
Roadmap towards utilization of hydrogen technologies in the energy network
(Bachelor thesis, 2024)Studien fokuserer på å belyse hydrogenproduksjonsmetoder og tilknyttede teknologier som avgjørende elementer i overgangen mot et bærekraftig energilandskap. Forskjellige metoder for hydrogenproduksjon, spesielt ... -
Robust features of a turbulent boundary layer subjected to high-intensity free-stream turbulence
(Journal article; Peer reviewed, 2018)The influence of the large scale organisation of free-stream turbulence on a turbulent boundary layer is investigated experimentally in a wind tunnel through hot-wire measurements. An active grid is used to generate ... -
A Role for Bose-Einstein Condensation in Astrophysics
(Peer reviewed; Journal article, 2023)We revive a 60-year-old idea that might explain a remarkable new observation of a periodic low-frequency radio emission from a source at galactic distances (GLEAM-X J162759.5-523504.3). It derives from the observation that ... -
The role of crystallinity and particle morphology on the sorption of dibutyl phthalate on polyethylene microplastics: Implications for the behavior of phthalate plastic additives
(Peer reviewed; Journal article, 2021)The sorption behavior of phthalate additives in plastic and microplastic litter is an important process controlling the exposure, net health risk and ecotoxicity of these co-occurring pollutants. Plastic crystallinity and ... -
Role of export industries on ozone pollution and its precursors in China
(Peer reviewed; Journal article, 2020)This study seeks to estimate how global supply chain relocates emissions of tropospheric ozone precursors and its impacts in shaping ozone formation. Here we show that goods produced in China for foreign markets lead to ... -
The role of green industrial transformation in mitigating carbon emissions: Exploring the channels of technological innovation and environmental regulation
(Peer reviewed; Journal article, 2023)The industrial sector is vital to economic progress, yet industrial pollution poses environmental and economic concerns. The purpose of the study was to investigate the influence of green industrial transformation in ... -
Role of higher education in sustainability of water resources An assessment of institutions in India
(Journal article; Peer reviewed, 2020)The motivation behind this paper is to understand the status of water resources management education provided in higher education institutions (HEIs) in India and decipher gaps between what is taught and what is needed in ... -
The role of Lagrangian drift in the geometry, kinematics and dynamics of surface waves
(Peer reviewed; Journal article, 2023)The role of the Lagrangian mean flow, or drift, in modulating the geometry, kinematics and dynamics of rotational and irrotational deep-water surface gravity waves is examined. A general theory for permanent progressive ... -
Role of receiver on the performance of a transcritical CO2 based air-conditioning unit with single-stage and two-stage expansion
(Peer reviewed; Journal article, 2021)Theoretical and experimental studies are carried out on a transcritical CO2 based air-conditioning unit. Two configurations– a system with single-stage expansion (SSE) and a system with two-stage expansion (TSE) have been ... -
Role of Transient Characteristics in Fish Trajectory Modeling
(Journal article; Peer reviewed, 2020)In this experiment, we analyzed live fish (silver carp) trajectories recorded in an experimental vertical-slot fishway. Combined with a numerical simulation, we demonstrated that randomness shown in fish trajectories might ... -
Romoppvarming i lavenergi kontorbygninger
(Master thesis, 2012)Denne oppgaven omhandler et plenumbasert omrøringsventilasjon løsning. Dette plenumbaserte ventilasjonssystemet er utstyrt med en perforert aluminiumshimling med en lufttett akustisk duk og en innfelte diffusor i himlingplaten. ... -
Romventilasjon for komfortkjøling
(Master thesis, 2012)SammendragNye byggeforskrifter og krav til energimerking har bidratt til et økt fokus på energibruk i bygninger. Spesielt gjelder dette energibruk til kjøling i bygninger. Samtidig har de nye forskriftene gjort det mindre ... -
Room-level occupancy simulation model for private households
(Journal article; Peer reviewed, 2019)This work presents a novel occupancy simulation model for residential buildings. The main contribution is that occupancy is simulated at room level, as opposed to more course spatial resolutions in previous studies. The ... -
Rotor wake turbulence: An experimental study of a wind turbine wake
(Doctoral thesis at NTNU;2016:34, Doctoral thesis, 2016)An experimental investigation of the first five diameters of the wake of a 0.9 meter in diameter model wind turbine with three blades has been undertaken. The blades are twisted and tapered and uses a NREL S826 ... -
Rotor-Stator Interaction in Low-Specific Speed Francis Turbines
(Doctoral theses at NTNU;2019:219, Doctoral thesis, 2019)Several breakdowns in hydropower plants with low specific speed Francis runners have been reported. These breakdowns are understood to be related to pressure pulsations, vibration modulus and the combination of these. One ... -
The Rotor-Stator Interaction Onboard a Low Specific speed Francis Turbine
(Journal article; Peer reviewed, 2020)Over the last years, several breakdowns in hydropower plants with low specific speed Francis runners have been reported. One of the main excitation forces in such runners is the pressure fluctuations originating from the ... -
RP-200: Design of PD pump for pumping of molasses
(Master thesis, 2008)Abstract Motivation There is, at the present time, no submerged molasses pump on the market that is designed specifically for cargo tankers. Due to this I, find it interesting to look into the possibilities of installing ... -
RSW Systems with CO2 as Refrigerant: Testing of new system solutions for sea water coolers
(Master thesis, 2009)In a refrigerated seawater (RSW) system using carbon dioxide (CO2) as the refrigerant, a variable bypass valve was installed in front of a suction gas heat exchanger (SGHX). A simulation tool was developed and utilized to ...