A hydrodynamic model for a full Chemical Looping Combustion (CLC) unit was established, and simulations performed using the code NEPTUNE_CFD, which is based on an Euler-Euler approach. The unit is a 150 kWth pilot constructed at SINTEF Energy Research. Three-dimensional unsteady numerical...
Pressure swing adsorption (PSA) can remove CO2 from flue gases. The full potential of the technology can only be exploited if the optimal combination of adsorbent material and process is identified. This identification requires screening the large database of adsorbent materials by performing...
Conduction currents have been measured in neat n-Tridecane under stepped voltage with a 50 ns rise time in a point-plane geometry with a 3.5 μm point radius. Currents are observed under both polarities with similar onset threshold. Larger currents are recorded under negative polarity. The shape and...
There is room for improvement in the current waste management systems to achieve material recycling goals consistent with a Circular Economy. Packaging waste fractions which have specific EU recycling targets constitute a significant part of the waste system. In Norway, the lowest recycling rate...
Carbon Capture and Storage (CCS) is seen as a key strategy on the path to net-zero emission. Measurements of carbon dioxide-rich mixtures are vital for the forthcoming widespread implementation of CCS. The present study investigates the opportunities for use of tomography throughout the CCS value...
High costs of maintenance and lost production during downtime are a challenge to the offshore wind industry, and there is a great potential to improve cost efficiency by improved maintenance and control strategies utilizing condition monitoring information. As wind farms get older, there is also an...
For decades, the refrigeration technology research groups at NTNU and SINTEF have been developing components, cycles and methodologies to promote attractive solutions using natural working fluids. The same values and vision were brought along when the same research groups branched out into...
Coupling a Chemical Looping Combustor fed with biofuels with a turbo expander is a promising Negative Emissions Technology (NET) to realize climate neutral targets in China and Europe. This is also an example of Bioenergy with Carbon Capture and Storage (BECCS) technology. To realize it, we need a...
The EU and UK have made ambitious commitments under the net-zero plans to decarbonise their economies by 2050. For this, offshore wind will play a major role, significantly contributing to a paradigm shift in the power generation and greater volatility of electricity prices. The operating strategy...
Integrated local multi-energy systems are recognized as a promising bottom-up alternative to achieve the ambitious energy and climate goals set by the European Commission for 2030. The nature of integrated multi-energy systems presumes a very complex interaction of different aspects from various...
Thermodynamic optimization of a heat exchanger design can be described as identifying the best trade-off between surface area, heat transfer efficiency and pressure drop. Most current heat exchanger types have a fixed characteristic geometry along the flow direction, which is logical considering the...
One concept for enhanced geothermal systems (EGS) described in recent literature is based on circulating CO2 through a reservoir where the thermosiphon effect becomes strong enough to sustain strong self-circulation such that both pressure and temperature differences can be utilized for power...
Carbon Capture and Storage is a technology of paramount importance for the fulfillment of the Sustainable Development Goal 7 (Affordable and Clean Energy) and the Sustainable Development Goal 5 (Climate Action). The European Union is moving rapidly towards low carbon technologies, for instance via...
Refrigeration systems are often installed in industrial facilities where the difference between the peak and average thermal loads can be considerable due to the throughput of products and changes in the ambient conditions throughout the year. Cold Thermal Energy Storage (CTES) technologies can be...
Industrial processes like dairy production, brewing etc. often require simultaneous cooling and heating. High temperature heat pumps (HTHP) with natural working fluids offer a cost-, energy efficient and sustainable solution. However, availability and performance data and components for HTHP are...
Carbon capture and storage (CCS) activities need to be ramped up to address the climate crisis. Abatement cost curves can help to identify low-cost starting points and formulate roadmaps for the implementation of CCS at industrial sites. In this work, we introduce the concept of energy supply cost...
This paper presents a novel system for measuring the clamping pressure of transformer windings. The clamping pressure is essential for the integrity of a transformer during short circuit events. The introduction of new loading patterns, increased dynamic loading, may accelerate cellulose degradation...
Inter-array power cables are used to connect wind turbines to the collector and export cable. In the transition from turbine tower to sea, the cable is installed in a J-tube, which has an unfavourable thermal environment and can thus be the thermal bottleneck of the cable installation. To optimize...