NTNU Open: Recent submissions
Now showing items 21-40 of 60794
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The Impact of Peltier and Dufour Coefficients on Heat Fluxes and Temperature Profiles in the Polymer Electrolyte Fuel Cells
(Peer reviewed; Journal article, 2020)We show that the coupling effects in non-equilibrium thermodynamics for heat-, mass- and charge- transport in the polymer electrolyte membrane fuel cell (PEMFC) all give significant contributions to local heat effects. The ... -
Data informed physical models for district heating grids with distributed heat sources to understand thermal and hydraulic aspects
(Peer reviewed; Journal article, 2021)The aim of the study was to develop data informed physical models for simulation of district heating (DH) grids for better presentation of hydraulic and thermal aspects in the DH grids integrating heat prosumers. A DH grid ... -
Compressors for ammonia-water hybrid absorption-compression heat pumps
(Chapter, 2019)In this paper, investigations on the development of industrial high temperature heat pumps are carried out based on the analysis of the current available compressors. The compressor used for the ammonia compression is a ... -
Exergy analysis of combined absorption-compression heat pump with ammonia-water mixture as working fluid
(Chapter, 2020)In this paper, investigations on the development of industrial high temperature heat pumps are carried out based on the exergy analysis of different compressor configurations. The combined absorption-compression heat pump ... -
Energy flow analysis of a poultry processing plant
(Chapter, 2020)More efficient utilization of primary energy resources can be achieved with thermal energy storages and it is a measure to limit global warming. The thermal energy demands of industrial food-processing plants are non-uniform ... -
Development of Ammonia-Water Hybrid Absorption- Compression Heat Pumps
(Chapter, 2019)In this paper, investigations on the development of industrial high temperature heat pumps are carried out based on the analysis of the current available components. Ammonia-water hybrid heat pumps combine technologies of ... -
Understanding Selectivity in CO2 Hydrogenation to Methanol for MoP Nanoparticle Catalysts Using In Situ Techniques
(Peer reviewed; Journal article, 2021)Molybdenum phosphide (MoP) catalyzes the hydrogenation of CO, CO2 , and their mixtures to methanol, and it is investigated as a high-activity catalyst that overcomes deactivation issues (e.g., formate poisoning) faced by ... -
Circular economy in manufacturing companies: A review of case study literature
(Peer reviewed; Journal article, 2021)Manufacturing companies have played an important role in improving standards of living worldwide. However, in a linear setting, they are also linked to unsustainable production and consumption patterns. The concept of ... -
Effect of convective mixing process on storage of CO2 in saline aquifers with layered permeability.
(Journal article, 2021)Convective mixing of free-phase CO2 and brine in saline aquifers is an established technique to accelerate the CO2 dissolution process. Correct estimation of the convection onset time and rate of CO2 dissolution into brine ... -
Diversifying diversity: Inclusive engagement, intersectionality, and gender identity in a European Social Sciences and Humanities Energy research project
(Journal article; Peer reviewed, 2020)This paper argues for inclusive engagement within Social Sciences and Humanities (SSH) interdisciplinary research, particularly, energy and climate research, by reflecting on the attempts to implement an inclusive engagement ... -
Crafting environmental policies into action: Energy consulting practices of craftspeople
(Journal article; Peer reviewed, 2018)This article discusses the emerging practices of craftspeople – particularly carpenters – in relation to policies of energy-efficient homes in the building sector. The Norwegian political goal of making buildings more ... -
Energy, economic, and environmental analysis of integration of thermal energy storage into district heating systems using waste heat from data centres
(Peer reviewed; Journal article, 2021)Data centres produce waste heat, which can be utilized in district heating systems. However, the mismatch between data centres’ heat supply and district heating systems’ heat demands limits its utilization. Further, high ... -
Energy Pathways for Future Norwegian Residential Building Areas
(Peer reviewed; Journal article, 2021)Owing to stricter building energy requirements, future buildings will be characterized by low base loads and occasional high peaks. However, future building areas will still contain existing and historical buildings with ... -
Pattern Recognition and Reconstruction
(Chapter, 2020)The topic of the chapter is track and vertex reconstruction in particle detectors. The reconstruction of (charged) tracks and the subsequent reconstruction of interaction vertices are important steps in the data analysis ... -
App-Delivered Self-Management Intervention Trial selfBACK for People With Low Back Pain: Protocol for Implementation and Process Evaluation
(Peer reviewed; Journal article, 2020)Background: Implementation and process evaluation is vital for understanding how interventions function in different settings, including if and why interventions have different effects or do not work at all. Objective: ... -
Does urbanicity modify the relationship between a polygenic risk score for depression and mental health symptoms? Cross-sectional evidence from the observational HUNT Study in Norway
(Peer reviewed; Journal article, 2020)Background Research suggests that genetic predisposition for common mental disorders may be moderated by the environment. This study examines whether a polygenic risk score (PRS) for depression is moderated by the level ... -
Degenerate perturbation theory in thermoacoustics: high-order sensitivities and exceptional points
(Peer reviewed; Journal article, 2020)In this study, we connect concepts that have been recently developed in thermoacoustics, specifically (i) high-order spectral perturbation theory, (ii) symmetry-induced degenerate thermoacoustic modes, (iii) intrinsic ... -
Metadata standards and practical guidelines for specimen and DNA curation when building barcode reference libraries for aquatic life
(Peer reviewed; Journal article, 2021)DNA barcoding and metabarcoding is increasingly used to effectively and precisely assess and monitor biodiversity in aquatic ecosystems. As these methods rely on data availability and quality of barcode reference libraries, ... -
Fatty acid composition of the postlarval daubed shanny (Leptoclinus maculatus) during the polar night
(Peer reviewed; Journal article, 2020)Recent discoveries of high levels of biological activity in the Arctic marine ecosystems during the polar night raise questions regarding the ecophysiology of the pelagic postlarval daubed shanny Leptoclinus maculatus. Of ... -
Generative Adversarial Immitation Learning for Steering an Unmanned Surface Vehicle
(Peer reviewed; Journal article, 2020)The task of obstacle avoidance using maritime vessels, such as Unmanned Surface Vehicles (USV), has traditionally been solved using specialized modules that are designed and optimized separately. However, this approach ...