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Theoretical Groundwork for a Database of Building Elements for Use in Renovation to Nearly Zero-energy Buildings
(Master thesis, 2016)Approximately 80 % of today s building stock will still remain in 2050. With buildings accounting for 40 % of the total energy demand, it is important to continually improve their efficiency in order to meet the goals of ... -
Theoretical Prediction of Longitudinal Heat Conduction Effects on the Efficiency of the Heat Wheel Used for Ventilation in Powerhouse Building “Kjørbo” in Norway
(Journal article; Peer reviewed, 2017)The present study investigates effects of longitudinal heat conduction (LHC) on the heat recovery effectiveness of the heat wheel in the Powerhouse building “Kjørbo”. The effects LHC which are usually ignored in the heat ... -
Theoretical study of Mechanical Stability of charcoal from biomass resources
(Master thesis, 2017)There is a large potential for lowering CO2 emissions from the metallurgical industry if carbon neutral bio based reductants could replace fossil coke. The inferior mechanical stability of bio based charcoal is one of the ... -
Thermal analysis of a directly heated solar heat storage
(Master thesis, 2014)A solar heat storage was designed and simulated. The Scheffler reflector is used to concentrate sun rays that are used to charge a thermal storage. -
Thermal and flow resistance characteristics of a parallel-pipe type natural heat transfer air-conditioning terminal device for nearly zero energy buildings
(Peer reviewed; Journal article, 2020)A nearly zero energy building (NZEB) can achieve significant energy saving by reducing its air-conditioning load greatly. At the same time, an NZEB should also achieve a comfortable thermal environment. In this paper, a ... -
Thermal Aspects during Depressurization of Process Systems
(Master thesis, 2009) -
Thermal Aspects during Depressurization of Process Systems
(Master thesis, 2009)The present work investigates the internal heat transfer mechanisms in a gas- and liquid filled pressurized vessel during depressurization and aims to improve the models for determining minimum temperatures in depressurization ... -
Thermal comfort and energy use for cooling and heating in non-residential buildings
(Master thesis, 2018)Indoor environmental quality is important as 90% of time is spent indoors. Otherwise consequences can be reduced performance of work or fostered illnesses. Contrary, the building sector is responsible for 40% of the total ... -
Thermal comfort in hospital buildings – A literature review
(Peer reviewed; Journal article, 2022)Hospital buildings are required to secure a variety of indoor environments according to the diverse requirements of patients and staff. Among these requirements, thermal comfort is an important design criterion for indoor ... -
Thermal Comfort Level of Patients and Surgical Staff in Operating Rooms at Nordic Hospital
(Chapter, 2021)In healthcare facilities and hospital environment, it is essential to enable thermal comfort for occupants. Unstable thermal conditions in the operating room (OR) will influence the performance of surgical staff and the ... -
Thermal Conductivity and Compaction of GDL-MPL Interfacial Composite Material
(Journal article; Peer reviewed, 2018)The microporous layer (MPL) and the gas diffusion layer (GDL) in a polymer electrolyte membrane (PEM) fuel cell assembly are often treated as separate layers in the literature. However, there exists a considerable third ... -
Thermal conductivity and internal temperature profiles of Li-ion secondary batteries
(Journal article, 2017)In this paper we report the thermal conductivity for several battery components. Materials were obtained from several electrode- and separator suppliers, and some were extracted from commercial batteries. We measured with ... -
Thermal conductivity and temperature profiles in carbon electrodes for supercapacitors
(Journal article, 2014)The thermal conductivity of supercapacitor film electrodes composed of activated carbon (AC), AC with 15 mass% multi-walled carbon nanotubes (MWCNTs), AC with 15 mass% onion-like carbon (OLC), and only OLC, all mixed with ... -
Thermal Conductivity in PEMFC PTLs with Different Gas Content and Corresponding simple PEMFC Internal Temperature Profiles
(Master thesis, 2017)More than 50 % of the PEMFC (Polymer Electrolyte Membrane Fuel Cell) energy is released as heat. The aim for this thesis was to contribute to the understanding of the management of that heat. The heat management in the ... -
Thermal conductivity in the three layered regions of MPL coated PTL for the PEM fuel cell
(Journal article; Peer reviewed, 2015)Thermal conductivity of the polymer electrolyte membrane fuel cell (PEMFC) components has achieved increased attention over the past decade. Despite the fact that the PEMFC itself (between the gas flow plates) is less than ... -
Thermal Conductivity, Heat Sources and Temperature Profiles of Li-ion Batteries
(Journal article; Peer reviewed, 2014)In this paper we report the thermal conductivity of several commercial and non-commercial Li-ion secondary battery electrode materials with and without electrolytesolvents. We also measure the Tafel potential, the ohmic ... -
Thermal conversion of biomass with emphasis on product distribution, reaction kinetics and sulfur abatement.
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:123, Doctoral thesis, 2009)Most of the work performed in this study has concentrated on the thermal decomposition of biomass. This was done because to the simple fact that biomass is mainly composed of volatiles that evaporates prior to the gasification ... -
Thermal corrections to the Casimir effect
(Journal article; Peer reviewed, 2006)The Casimir effect, reflecting quantum vacuum fluctuations in the electromagnetic field in a region with material boundaries, has been studied both theoretically and experimentally since 1948. The forces between ... -
Thermal Decomposition Kinetics of Wood and Bark and their Torrefied Products
(Journal article; Peer reviewed, 2017)The pyrolysis kinetics of Norway spruce, its bark, and their torrefied products was studied. Thermogravimetry (TGA) was employed with linear and stepwise heating programs. Altogether 36 TGA experiments were evaluated ... -
Thermal efficiency of coal-fired power plants: From theoretical to practical assessments
(Journal article; Peer reviewed, 2015)The improvement in thermal efficiency for coal to power processes is increasingly important due to concerns on CO2 emissions. This paper presents a systematic study on direct combustion coal to power processes with respect ...