Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 1578-1597 av 4152
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Experimental study of turbulent flow with dispersed rod-like particles through optical measurements
(Doctoral Theses at NTNU, 1503-8181; 2014:194, Doctoral thesis, 2014)The knowledge of the behavior of non-spherical particles suspended in turbulent flows covers a wide range of applications in engineering and science. Dispersed two-phase flows and turbulence are the most challenging subjects ... -
Experimental study of water coning phenomenon in perforated pipes geometry
(Master thesis, 2013)This Master Thesis is performed in close cooperation between NTNU and Statoil Research Centre in Rotvoll, Trondheim. It focuses on the experimental study of the water coning phenomenon in perforated pipe geometry. This ... -
Experimental Study on Charcoal Production from Woody Biomass
(Journal article; Peer reviewed, 2016)In the present work, effects of process conditions on char and fixed carbon yields from four woody biomasses were studied. The influence of the particle size, sample mass, and pressure on experimental values of char and ... -
Experimental study on droplet size of dispersed oil-water flow
(Master thesis, 2013)Experimental investigation on droplet sizing measurement techniques both in flow of oil-in-water dispersion and water-in-oil dispersion were performed at the Statoil multiphase flow laboratory in Rotvoll. The focus of these ... -
Experimental study on power curtailment of three in-line turbines
(Journal article; Peer reviewed, 2017)A dataset of wind tunnel power and wake flow measurements on a setup of three aligned model wind turbines is presented. The power outputs of the three turbines are in good agreement with measurements from a full-scale wind ... -
Experimental study on the characteristics of pressure drop oscillations and their interaction with short-period oscillation in a horizontal tube
(Journal article; Peer reviewed, 2018)Long-period oscillations (pressure drop oscillations) and short-period oscillations (superimposed density wave oscillations) have been observed in many studies. However, under which condition the long-period oscillations ... -
Experimental study on the effect of exhaust airflows on the surgical environment in an operating room with mixing ventilation
(Peer reviewed; Journal article, 2020)Due to the requirements of indoor environment parameters, including temperature, humidity, air speed and indoor quality, the design of the surgical environment is a very complex task. However, with limited studies on the ... -
Experimental study on the effect of ventilation airflow rate and separation distance on the risk of airborne COVID-19 infection
(Master thesis, 2022)Koronapandemien har vart i nærmere tre år og påvirket menneskers liv med inngripende tiltak for å redusere smitte. Viruset har fortsatt å utvikle seg, selv med forholdsregler og distribusjon av vaksiner. Eksperter fra hele ... -
An experimental study on the effects of winglets on the tip vortex interaction in the near wake of a model wind turbine
(Peer reviewed; Journal article, 2020)An experimental study of the near wake up to four rotor diameters behind a model wind turbine rotor with two different wing tip configurations is performed. A straight‐cut wing tip and a downstream‐facing winglet shape are ... -
Experimental study on the exposure level of surgical staff to SARS-CoV-2 in operating rooms with mixing ventilation under negative pressure
(Peer reviewed; Journal article, 2022)The purpose of this study was to reveal the exposure level of surgical staff to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from the patient's nose and wound during operations on COVID-19 patients. The ... -
Experimental Study on the Integration of a Novel Two-Stage Evaporator in a CO2 Heat Pump Chiller
(Master thesis, 2023)I denne masteroppgaven er det blitt utført eksperimentelle forsøk på en ny totrinns fordamper integrert i et transkritisk CO2-kjøleanlegg. Motivet for forsøkene er å se på muligheten for å forbedre energieffektiviteten i ... -
Experimental Study on the Surgical Microenvironment in an Operating Room with Mixing Ventilation under Positive and Negative Pressure
(Chapter, 2021)Due to the outbreak of Covid-19, negative pressure operating room (NPOR) are strongly recommended to be applied to prevent spreading virus from infected patients to adjacent rooms during surgery procedures. However, there ... -
Experimental study on the thermal plume from a surgeon in an operating room with mixing ventilation during COVID-19 pandemic
(Chapter, 2021)Following the outbreak of COVID-19 (SARS-CoV-2) in 2019, studies show positive results in protecting the surgical staff from patients infected by COVID-19 in operating rooms (ORs) with negative pressure. A negative pressure ... -
Experimental study on two phase oil-water dispersed flow
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:315, Doctoral thesis, 2013)The present work reports the study of oil-water dispersed flows experimentally. Small scale experiments using small diameter pipe flow loops or rheometers are commonly used for the characterization of oil-water flows in ... -
Experimental test of a black-box economic model predictive control for residential space heating
(Peer reviewed; Journal article, 2021)Previous studies have identified significant demand response (DR) potentials in using economic model predictive control (E-MPC) of space heating to exploit the inherent thermal mass in residential buildings for short-term ... -
Experimental testing and development of CO2 compressors: Eksperimentell utprøving og utvikling av CO2 kompressorer
(Master thesis, 2012)CO2 is a natural refrigerant and is well suitable in many cooling applications. It has been used within the refrigeration industry from the 1900s, but got replaced as the synthetic refrigerants got introduced. In 1990 these ... -
Experimental testing of wind turbine wake control methods
(Doctoral theses at NTNU;2018:107, Doctoral thesis, 2018)In the light of the growing world-wide wind energy production, the optimization of wind farms has become an increasingly important field of research. Herein, the aerodynamic interactions between the single turbines through ... -
Experimental validation of analytical wake and downstream turbine performance modelling
(Journal article; Peer reviewed, 2018)Wake effects in wind farms can cause significant power losses. In order to reduce these losses layout and control optimization can be applied. For this purpose, simple and fast prediction tools for the wake flow are needed. ... -
Experimental validation of pressure drop models during flow boiling of R134a – effect of flow acceleration and entrainment
(Journal article; Peer reviewed, 2018)A crucial step to assure proficient work of power and process apparatus is their proper design. A wide array of those devices operates within boiling or condensation of the working fluid to benefit from high heat transfer ... -
Experimentation on Surge waves in Three Phase Pipe Flows
(Master thesis, 2020)Det er utført forsøk i flerfaselaboratoriet ved NTNU med enkeltbølger (“surge waves”) i olje-vann-luft strøm i rør. Studien er en oppfølging av et tidligere prosjektarbeid. Forsøkene ble utført ved så lave luftrater som ...