Browsing Institutt for energi og prosessteknikk by Journals "IOP Conference Series: Earth and Environmental Science (EES)"
Now showing items 1-20 of 23
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A Norwegian zero emission neighbourhood (ZEN) definition and a ZEN key performance indicator (KPI) tool
(Journal article; Peer reviewed, 2019)Within the Norwegian Research Centre for Zero Emission Neighbourhoods (ZEN) in smart cities, a definition for achieving zero emission neighbourhoods will be developed and tested against nine pilot areas. The ZEN definition ... -
An Analytical quasi 2D steady-state Francis turbine model using first principles
(Journal article; Peer reviewed, 2022) -
Application of hydro-abrasive erosion model from IEC 62364:2019 standard in Francis turbines
(Peer reviewed; Journal article, 2022)Hydro-abrasive erosion in hydraulic turbines is critical and one of the prominent issue due to its association with maintenance costs and production losses in the hydropower plant. IEC 62364:2019* standard guide focuses ... -
Current research in hydraulic turbines against sediment erosion: International partnership and collaborations
(Peer reviewed; Journal article, 2021)The problem of material erosion in hydraulic machineries has been under the investigation since a century ago. However, the proper solutions to the erosion of hydro turbine due to sediment-laden flows has not been found ... -
Development of simplified model for prediction of sediment induced erosion in Francis turbine’s sidewall gaps
(Peer reviewed; Journal article, 2022)Sediment induced erosion in exposed components of hydraulic turbines is a major issue in most of the sediment laden hydropower projects. Gradual removal of material can change the components profile which can lead to change ... -
Embodied emission profiles of building types: Guidance for emission reduction in the early phases of construction projects
(Peer reviewed; Journal article, 2020)The embodied emissions of the construction materials in buildings are a significant contributor to climate change but have only rarely been systematically studied by statistical methods. In the early phases of a building ... -
Energy analysis and energy planning for kindergartens based on data analysis
(Journal article; Peer reviewed, 2019)The aim of the study was to utilize different building data for prediction of development in energy use of a typical building type. In this study, energy use and its future development for kindergartens in Trondheim, Norway, ... -
Energy efficiency of strategies to enable temperature zoning during winter in highly-insulated residential buildings equipped with balanced mechanical ventilation
(Journal article; Peer reviewed, 2019)To reduce the space-heating needs, balanced mechanical ventilation equipped with a heat recovery is frequently implemented in highly-insulated residential buildings. This standard ventilation strategy tends to homogenize ... -
Future energy pathways for a university campus considering possibilities for energy efficiency improvements
(Journal article; Peer reviewed, 2019)The study aimed to show in a systematic way possible energy efficiency measures that would decrease the total energy use at the university campus in Trondheim, Norway. The entire study was developed in close collaboration ... -
GHG emission requirements and benchmark values in Norwegian building codes
(Peer reviewed; Journal article, 2020)As a response to the Paris agreement, Norway is committed to reducing greenhouse gas (GHG) emissions by 50 percent by 2030. Highly energy-efficient buildings have a greater proportion of embodied GHG emissions from material ... -
High flexibility in Francis turbine operation and design philosophy: A review
(Peer reviewed; Journal article, 2022)This paper examines and discusses how various operation schemes and design philosophies can prolong the expected lifetime of a hydro turbine subjected to many start-stop cycles and high ramping rates. With the proliferation ... -
Influence of emerging technologies deployment in residential built stock on electric energy cost and grid load
(Journal article; Peer reviewed, 2019)High penetration rates of novel building energy technologies has prompted a growing concern about their microeconomic effect and grid influence. Deployment of photovoltaic (PV), solar water heating (SWH) systems and energy ... -
Investigation of sediment erosion phenomenon for different blade angle distribution in Francis runner
(Peer reviewed; Journal article, 2021)Wear and tear of hydraulic turbine due to sediment erosion is one of the major problems in hydropower plants located in the Himalayan and Andes regions. High sediment concentration in water of such areas wears down the ... -
Latent heat storage for centralized heating system in a ZEB living laboratory: integration and design
(Journal article; Peer reviewed, 2019)The ZEB Lab project, coordinated by SINTEF and NTNU, aims at building a ZEB (Zero Emission Building) in Trondheim (Norway) in 2019, to be used both as office building and living laboratory. An innovative latent heat storage ... -
Modal testing of the Francis-99 runner
(Peer reviewed; Journal article, 2021)The Francis-99 low specific speed Francis runner has undergone much study in the years since it was first made available to the public. The High Head Francis(HiFrancis) project, hosted by the Waterpower Laboratory at NTNU, ... -
Numerical investigation of a Pelton turbine at several operating conditions
(Peer reviewed; Journal article, 2022)The use of Computational Fluid Dynamics (CFD) for predicting the flow behaviour in Pelton turbines is limited by the complex nature of the flow, interaction between the jets and interference of the water after the impact ... -
Opportunities for Local Energy Supply in Norway: A Case Study of a University Campus Site
(Journal article; Peer reviewed, 2019)Neighbourhoods can contribute to climate change mitigation by supplying and/or facilitating renewable energy sources (RES). In this context, we evaluate opportunities related to the energy system of a Norwegian university ... -
Particle image velocimetry measurements in the vaneless space of a model Francis turbine under steady state operation
(Peer reviewed; Journal article, 2021)Two-dimensional, two component particle image velocimetry (PIV) measurements of the guide-vane wake and vaneless space for a high head Francis model turbine are presented. Measurements have been carried out with a fixed ... -
Pump-Turbines in Conventional Hydropower Plants
(Peer reviewed; Journal article, 2021)This paper proposes an innovative approach to retrofit existing hydropower plants with suitable upper and lower reservoirs into pumped storage. The conventional methods are both comprehensive and expensive, mainly due to ... -
Review of HVAC strategies for energy renovation of detached houses towards nZEB in cold climates
(Journal article; Peer reviewed, 2019)This paper provides a review of heat and ventilation measures that can be applied to ambitious energy renovation of detached houses in Nordic countries. In this review, requirements for solutions are defined. Key technologies ...