Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 1610-1629 av 4210
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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 ... -
Experiments and CFD simulation of an air-conditioned tractor cabin for thermal comfort of tractor operators in Pakistan
(Journal article; Peer reviewed, 2023)Tractors are manufactured without air-conditioned cabins in Pakistan. This leads to thermal discomfort for tractor operators working under direct solar exposure. Therefore, this study aimed to design and install an ... -
Experiments and Modelling for the Control of Riser Instabilities: Forsøk og simulering for regulering av ustabil strøm i stigerør
(Master thesis, 2010)Multiphase flowline-riser systems sometimes encounter fluctuations in flow rate, pressure and liquid hold-up characterized as severe slugging. Slugging is undesirable because the piping and downstream receiving facilities ... -
Experiments and modelling of choked flow of CO2 in orifices and nozzles
(Peer reviewed; Journal article, 2022)In order to accelerate the deployment of capture and storage (CCS), engineers need experimentally validated models, among other things, to predict the mass flow rate in process equipment and flow restrictions like valves, ... -
Experiments in the wind turbine far wake for the evaluation of an analytical wake model
(Journal article; Peer reviewed, 2017)Nowadays, not only the size of single wind turbines but also the size of wind farms is increasing. Understanding the interaction between the turbines and especially the wakes formed behind them are getting more important ... -
Experiments in the wind turbine far wake for the evaluation of analytical wake models
(Master thesis, 2017)Nowadays, not only the size of single wind turbines but also the size of wind farms is increasing. Understanding the interaction between the turbines and especially the wake formed behind them are getting more important ...