Browsing Institutt for energi og prosessteknikk by Title
Now showing items 85-104 of 4210
-
A solar concentrator with heat storage and self-circulating liquid
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:164, Doctoral thesis, 2013)The main objective of this thesis is to design and test a solar concentrating collector with heat storage for domestic applications, mainly solar cooking. The system must be cheap, robust, easy to use and maintain, and ... -
A state-of-art review of retrofit interventions in buildings towards nearly zero energy level
(Journal article; Peer reviewed, 2017)Unmistakably, buildings retrofitting brings the possibilities to reduce energy use and greenhouse gas emissions. However, selecting specific retrofit strategies is complex and requires careful planning. There are already ... -
A steady and quasi-steady state analysis on the CO2 hybrid ground-coupled heat pumping system
(Journal article; Peer reviewed, 2017)This article contains the steady and quasi-steady state analysis on a CO2 hybrid ground-coupled heat pumping system for warm climates. The hybrid system uses a combination of ambient air and ground boreholes as a heat sink ... -
A study of microgrids in Norway
(Bachelor thesis, 2021)Kraftbehovet i Norge øker. Dette vil sannsynligvis føre til utfordringer knyttet til strømnettets leveringskvalitet og stabilitet, spesielt i avsidesliggende omr˚ader. Mikronett kan være en del av løsningen p˚a disse ... -
A Study of Solar Power Implementation in the Norwegian Poultry Industry
(Bachelor thesis, 2020)Det er forventet at sol- og vindenergi kombinert skal utgjøre de største fornybare energikildene i fremtiden. Solteknologien har globalt opplevd et stort gjennombrudd de siste årene, og det er videre forventet en 60 % ... -
A study of two-phase gas-liquid flow with viscous oil in a vertical pipe and annuli channel
(Master thesis, 2016)The knowledge of gas-liquid flows in annulus geometries can be found in several applications such as the geothermal, nuclear, space, chemical and petroleum. Over time, the design of ducts with annulus geometries for transport ... -
A Study of Ultra-Low Temperature Application for Fish Freezing and Storing
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:128, Doctoral thesis, 2014)This work was performed in order to get information about the economic benefit of maintaining the quality and increasing the shelf-life of fish using ultra-low temperature (between –30.0 and –85.0 °C). The scope of the ... -
A systematic Design Methodology for Multicomponent Membrane Systems
(Master thesis, 2015)Abstract Fossil fuel predominantly dominates the world energy supply. With energy demand set to increase, especially for developing countries, CO2 emissions tax and the environmental impact of high CO2 concentration in ... -
A Taxonomy for Indicators Related to the Sustainable Development Goals: A Norwegian Municipality Case Study
(Master thesis, 2021)Global conditions are pushing cities and municipalities to a deeper involvement in sustainability. The 2030 Agenda contributes as a framework for multi-level stakeholders to aim for the Sustainable Development Goals. In ... -
A test of the v 2-f k-epsilon turbulence model for the prediction of vortex shedding in the Francis-99 hydrofoil test case
(Journal article; Peer reviewed, 2019)A test of the v 2 − f k − epsilon turbulence model for the flow around the Francis-99 hydrofoil geometry is conducted in order to assess it's accuracy of trailing edge vortex shedding prediction. The model is based on the ... -
A theoretical and experimental study of the thermal degradation of biomass
(Dr.ingeniøravhandling, 0809-103X; 1996:115, Doctoral thesis, 1996) -
A thermogravimetric and kinetic study on devolatilization of biomass
(Master thesis, 2018)The pyrolysis characteristics of spruce wood and birch wood, both of two different particle sizes: 0.063-0.1 mm and 0.2-0.3 mm were investigated using thermogravimetric analyzer. The pyrolysis process was subdivided into ... -
A thermogravimetric and kinetic study on devolatilization of woody biomass
(Master thesis, 2016)Biomass is a promising energy resource for a more sustainable global energy outlook. Thermochemical conversion of biomass is a very attractive and important technology for energy generation and production of value-added ... -
A time-quantitative analysis of calorie flows within the global food supply and the calorie footprint of nations - opportunities for increasing food availability and enhancing food security.
(Master thesis, 2022)Motivert av interessen for å finne måter å øke tilgjengeligheten på mat for å mate befolkningen i 2050 samtidig som den møte den økende globale etterspørselen etter avlinger til andre formål, presenterer dette arbeidet en ... -
A Treatise on Interpolar Transport Phenomena
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:201, Doctoral thesis, 2012)This thesis contributes to the understanding of mechanisms for mass transport in aluminium electrolysis cells. Fundamental studies are undertaken of ow patterns and mass transport in the interpolar region under various ... -
A Two-Dimensional Study on the Effect of Anisotropy on the Devolatilization of a Large Wood Log
(Journal article; Peer reviewed, 2019)In this work, a two-dimensional (2D) model for wood particle drying, devolatilization, and char conversion is presented and validated against experimental studies of devolatilization of a large, dry, cylindrical birch wood ... -
A validated CFD model of plain and serrated fin-tube bundles
(Journal article; Peer reviewed, 2018)This work presents a Computational Fluid Dynamics model of helically wound fin tube bundles and demonstrates its predictive capability for thermal-hydraulic performance. A consistent validation against experimental data ... -
A variation focused cluster analysis strategy to identify typical daily heating load profiles of higher education buildings
(Journal article; Peer reviewed, 2017)This paper presents a variation focused cluster analysis strategy to identify typical daily heating energy usage profiles of higher education buildings. Different from the existing cluster analysis studies which were ... -
A Wall-Function Approach for Direct Precipitation/Crystallization Fouling in CFD Modelling
(Chapter, 2015)The main objective of this paper is to present a generic modelling framework, for the diffusive mass transport through the turbulent, reactive boundary layer of multi-component fluid mixtures that ... -
A zero emission concept analysis of a single family house
(ZEB Project report;9-2013, Research report, 2013)