Institutt for energi og prosessteknikk
Recent Submissions
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Effect of anion exchange ionomer content on electrode performance in AEM water electrolysis
(Journal article; Peer reviewed, 2020)Anion exchange membrane water electrolysis (AEMWE) has acquired substantial consideration as a cost-effective hydrogen production technology. The anion ionomer content in the catalyst layers during hydrogen and oxygen ... -
A detailed review on CO2 two-phase ejector flow modeling
(Peer reviewed; Journal article, 2020)Ejector-equipped vapor-compression systems for refrigeration and cooling, relying solely on (R744) as a natural working fluid, are perceived to be an eco-friendly and highly efficient solution for many applications. However, ... -
The importance of thermodynamic insight in Work and Heat Exchange Network Design
(Peer reviewed; Journal article, 2020)Work and Heat Exchange Network (WHEN) design has been an emerging topic in the area of Process Synthesis and has attracted increasing research interest in the past few years. Not only temperature changes but also pressure ... -
Selecting the model and influencing variables for DHW heat use prediction in hotels in Norway
(Peer reviewed; Journal article, 2020)Domestic hot water heat use prediction modelling is an important instrument for increasing energy efficiency in many buildings. This article addressed hourly domestic hot water heat use prediction, using a Norwegian hotel ... -
Influence of space heating distribution systems on the energy flexibility of Norwegian residential buildings
(Chapter, 2020)This work evaluates the influence of the heating distribution system on the energy flexibility of highly insulated single-family residential buildings. The behavior of three different systems (air heating, radiator heating, ... -
Domestic hot water decomposition from measured total heat load in Norwegian buildings
(Chapter, 2020)In Nordic climates, the energy use in buildings is dominated by space heating (SH) and domestic hot water (DHW). Heat load measurements with hourly resolution from smart meters are now becoming the standard. However, in ... -
Strategic Research Agenda of the EERA Joint Programme Hydropower
(Research report, 2019)The launch of a new EERA Joint Programme on Hydropower is good news for energy system in Europe and beyond. The clean energy transition is necessary, demanding and accelerating. Hydropower in Europe and worldwide represents ... -
Vortex generator's effect on trailing edge vortex shedding and fluid structure interaction
(Peer reviewed; Journal article, 2020)An initial study of the effects vortex generators (VGs) have on the mitigation of vortex-induced vibrations (VIVs) of hydrofoils have been performed at the Waterpower laboratory of the Norwegian University of Science and ... -
Integrated CO2 system with HVAC and hot water for hotels: Field measurements and performance evaluation
(Journal article; Peer reviewed, 2020)This study investigates the performance of an integrated CO2 (R744) heat pump and chiller unit in a Norwegian hotel. The system consists of a single unit for heating, cooling and hot water with an integrated thermal storage. ... -
Assessment of Transient NOx Reduction Potential in Wood Stoves
(Journal article; Peer reviewed, 2020)NOx emissions from wood stoves remain a significant concern, even though modern wood stoves are continuously improved regarding emissions due to incomplete combustion, e.g. particulates of organic origin. Today, state of ... -
Structural, impedance and electrochemical characteristics of electrical double layer capacitor devices based on chitosan: Dextran biopolymer blend electrolytes
(Peer reviewed; Journal article, 2020)This report presents the preparation and characterizations of solid biopolymer blend electrolyte films of chitosan as cationic polysaccharide and anionic dextran (CS: Dextran) doped with ammonium iodide (NH4I) to be utilized ... -
Demonstration of Gas Switching Technology for Accelerated Scale-up of Pressurized Chemical Looping Applications
(Doctoral theses at NTNU;2020:300, Doctoral thesis, 2020)This research focused on the experimental demonstration of Gas Switching Technology as an alternative for pressurized chemical looping. Chemical looping processes usually employ circulation fluidized bed (CFB) arrangement ... -
Development and validation study of a 1D analytical model for the response of reheat flames to entropy waves
(Peer reviewed; Journal article, 2020)Numerical simulations of laminar premixed flames burning hydrogen and methane in spontaneous ignition mode are performed by harmonically exciting the reactants’ temperature at the domain inlet. The results are compared to ... -
Integrating life cycle and impact assessments to map food’s cumulative environmental footprint
(Peer reviewed; Journal article, 2020)Feeding a growing, increasingly affluent population while limiting environmental pressures of food production is a central challenge for society. Understanding the location and magnitude of food production is key to ... -
Pathways toward a carbon-neutral Swiss residential building stock
(Journal article, 2020)Current policies to reduce energy consumption and CO2 emissions associated with buildings focus on technological developments such as energy efficiency, renovation rates and renewable energies. While technological developments ... -
Ni/NiO nanosheets for alkaline hydrogen evolution reaction: In situ electrochemical-Raman study
(Journal article; Peer reviewed, 2020)Nickel/Nickel oxide (Ni/NiO) nanosheets heterostructure is a cheap and active catalyst for hydrogen evolution reaction (HER) in alkaline electrolytes. However, the reason for this activity is still under debate. Herein ... -
A highly efficient water electrolyser cell assembled by asymmetric array electrodes based on Co, Fe-doped Ni(OH)2 nanosheets
(Peer reviewed; Journal article, 2020)Hydrogen is an “ideal” clean sustainable energy source if it is produced via water electrolyser using power generated by renewable energy systems (RES) such as solar panels and wind turbines. In this study, cobalt (Co) and ... -
Reducing fuel consumption and emissions through optimization of the vertical alignment of a road: A case study of a heavy-duty truck on the Norwegian Highway Route E39
(Peer reviewed; Journal article, 2019)In this paper, a method to assess, optimize and modify the vertical alignment of a road is developed. The aim is to optimize the alignment with respect to fuel consumption and quantify the induced reduction in terms of ... -
Comparing Three Methods for Design Analyses of Rankine Cycle for Waste Heat Recovery from Natural Gas Compression
(Chapter, 2020)This study applies three methods for design of Rankine cycles utilizing waste heat in the oil and gas industry. The methods differ in the level of detail of heat exchanger model applied and in the flexibility with respect ... -
Adding country resolution to EXIOBASE: impacts on land use embodied in trade
(Peer reviewed; Journal article, 2020)Multiregional input–output (MRIO) databases are used to analyze the impact of resource use and environmental impacts along global supply chains. To accurately account for pressures and impacts that are highly concentrated ...
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