Browsing SINTEF Open by Journals "Energy"
Now showing items 1-20 of 57
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A gas ejector for CO2 supercritical cycles
(Journal article; Peer reviewed, 2018)he CO2 ejectors are recently often used as the main expansion device in the modern refrigeration cycles. On the other hand, according to the newest literature the implementation the ejectors into supercritical CO2 power ... -
Achieving 50% weight reduction of offshore steam bottoming cycles
(Peer reviewed; Journal article, 2021)Adding a bottoming cycle to the gas turbines powering offshore oil and gas production plants allows additional power to be produced from recovered excess heat. Hence, the power demand of the platform can be met by burning ... -
Ammonia from solid fuels: A cost-effective route to energy security with negative CO2 emissions
(Peer reviewed; Journal article, 2023)This study investigates a potential solution to the global challenge of secure, affordable, and low-carbon energy supply: ammonia production from local coal and biomass resources with CO2 capture for negative emissions. ... -
Balancing future variable wind and solar power production in Central West Europe with Norwegian hydropower Energy
(Journal article; Peer reviewed, 2019) -
Challenges and potentials for low-temperature district heating implementation in Norway
(Journal article; Peer reviewed, 2018)Current district heating (DH) systems with high temperatures are facing many challenges that may decrease its competitiveness. Some of the challenges are decreased heat demands due to energy efficient buildings and high ... -
A comparative study on thermochemical decomposition of lignocellulosic materials for energy recovery from waste: Monitoring of evolved gases, thermogravimetric, kinetic and surface analyses of produced chars
(Peer reviewed; Journal article, 2023)Increased waste generation caused by the growth of urbanisation rate forces scientists and policymakers to rapidly develop and implement optimal waste management strategies. Since there are many ways to waste treatment and ... -
Concept of hydrogen fired gas turbine cycle with exhaust gas recirculation: Assessment of process performance
(Journal article; Peer reviewed, 2019)High hydrogen content fuels can be used in gas turbine for power generation with CO2 capture, IGCC plants or with hydrogen from renewables. The challenge for the engine is the high reactive combustion properties making ... -
Considerations on factors affecting biocarbon densification behavior based on a multiparameter model
(Peer reviewed; Journal article, 2021)The optimization of upscaled biochar pelleting is limited by lack of knowledge regarding the effects of process parameters. A multiparameter model, coupled to a single pellet press unit, was for the first time applied to ... -
Crossing CO2 equator with the aid of multi-ejector concept: A comprehensive energy and environmental comparative study
(Journal article; Peer reviewed, 2018)The ever-stricter regulations put into effect worldwide to significantly decrease the considerable carbon footprint of commercial refrigeration sector have forced the transition to eco-friendlier working fluids (e.g. CO2, ... -
Depressurization of CO2 in a pipe:High-resolution pressure and temperature data and comparison with model predictions
(Peer reviewed; Journal article, 2020)The design of safe and cost-efficient CO2-transportation systems is an integral part of CO2 capture and storage (CCS) deployment. To achieve this, accurate transient flow models capturing the occurrence of gas, liquid and ... -
Design and simulations of refrigerated sea water chillers with CO2 ejector pumps for marine applications in hot climates
(Journal article; Peer reviewed, 2018)Various system configurations have been developed to improve the R744 systems under hot ambient conditions. However, stationary land applications are characterised by negligible limits on space for system equipment, unlike ... -
Design and simulations of refrigerated sea water chillers with CO2 ejector pumps for marine applications in hot climates
(Journal article; Peer reviewed, 2018)Various system configurations have been developed to improve the R744 systems under hot ambient conditions. However, stationary land applications are characterised by negligible limits on space for system equipment, unlike ... -
Design optimization of compact gas turbine and steam combined cycles for combined heat and power production in a FPSO system–A case study
(Peer reviewed; Journal article, 2023)This case study aims to cover a wide range of relevant aspects related to combined cycle design, mechanical integrity and operational reliability for cogeneration of heat and power in FPSO systems. The methods consist of ... -
The development of a hydrocarbon high temperature heat pump for waste heat recovery
(Peer reviewed; Journal article, 2019)Waste heat is an abundant resource that if recovered with a heat pump would increase energy efficiency in industrial processes. This will provide improvements in heat utilization and reduce the environmental impact of ... -
Development of a spray-ejector condenser for the use in a negative CO2 emission gas power plant
(Peer reviewed; Journal article, 2023)One promising solution for developing low-emission power technologies is using gaseous fuel combustion in pure oxygen when the exhaust gas mixture is composed of H2O and CO2, and where CO2 is separated after steam condensation. ... -
Dynamic modeling of local district heating grids with prosumers: A case study for Norway
(Journal article; Peer reviewed, 2018)District heating (DH) will play an important role in the future fossil-free energy systems by enabling increased utilization of waste heat and renewable heat sources to cover buildings' heat demand. A prerequisite for this ... -
Dynamic modelling of local low-temperature heating grids: A case study for Norway
(Journal article; Peer reviewed, 2017)Today's district heating (DH) networks in Norway are 2nd and 3rd generation systems, with supply temperatures ranging from 80 to 120 °C. In new developments, it is desirable to shift to 4th generation, low-temperature ... -
Efficient hydrogen production with CO2 capture using gas switching reforming
(Journal article; Peer reviewed, 2019)Hydrogen is a promising carbon-neutral energy carrier for a future decarbonized energy sector. This work presents process simulation studies of the gas switching reforming (GSR) process for hydrogen production with integrated ... -
Electric water heater flexibility potential and activation impact in system operator perspective – Norwegian scenario case study
(Peer reviewed; Journal article, 2021)Simultaneous activation of demand side flexibility on thermostatically controlled loads will cause adverse impacts later in the form of rebounds. Distribution system operators must know the characterisation of the impact, ... -
Equation-oriented methods for design optimization and performance analysis of radial inflow turbines
(Peer reviewed; Journal article, 2021)This paper presents methods for design optimization and performance analysis of radial inflow turbines. Both methods are formulated in an equation-oriented manner and involve a single mathematical problem that is solved ...