Cooling system for supermarkets, now-a-days in developing countries like India, mainly uses man-made synthetic refrigerants/mixtures such as R134a, R404A and R410A (HFCs). These fluorinated refrigerants possess an outrageous impact on the environment/ambient due of their high GWP and ODP. The EU F...
A test facility for experimental investigation of the R744 vapour compression rack equipped with the multi-ejector expansion work recovery module was designed and manufactured. Comparison of the R744 multi-ejector refrigeration system with the R744 parallel compression system on the same test...
Different vessel types for transferring technicians for maintenance and inspection of offshore wind farms are often evaluated and compared by their limiting significant wave height for accessing the wind turbines. The limiting significant wave height is also the parameter that is often used as the...
Deteriorated power system components have a higher probability of failure than new components. Still, reliability of supply analyses traditionally model all components of the same type with the same probability of failure, and thus neglects the effect of deteriorated components. This paper presents...
This paper presents a passivity-based nonlinear control (PBNC) method by considering Euler Lagrange (EL) model for duty ratio control of DC/DC converter in secondary side of inductive power transfer (IPT) systems. In this regard, an IPT system feeding a constant power load (CPL) is considered. Then...
The United Nations (UN) expectations for 2030 account for a renewable, affordable, and eco-friendly energy future. The 2030 agenda includes 17 different Sustainable Development Goals (SDGs) for countries worldwide. In this work, the 7th SDG: Affordable and Clean Energy, is brought into focus. For...
The increased integration of distributed energy resources (DERs) in the distribution network with intermitent generation profiles will likely make voltage regulation a difficult task. However, DERs bring both challenges and opportunities, as they can provide renewable forms of local energy and act...
Smart energy systems comprise multiple domains like power, thermal, control, information, and communication technology, which increases the complexity of research and development studies. This expansion also requires larger and ever so complex experimental pilot environments driving the demand for...
We present a classical density functional theory (DFT) for fluid mixtures that is based on a third-order thermodynamic perturbation theory of Feynman-Hibbs-corrected Mie potentials. The DFT is developed to study the interfacial properties of hydrogen, helium, neon, deuterium, and their mixtures, i.e...
The ongoing large-scale deployment of offshore wind parks creates the need for substantial investments in Voltage Source Converter (VSC) based High Voltage Direct Current (HVDC) transmission infrastructure. An investment cost model with a corresponding cost parameter set was established in 2018 to...
Slender marine structures are subjected to ocean currents, which can cause vortex-induced vibrations (VIV). Accumulated damage due to VIV can shorten the fatigue life of marine structures, so it needs to be considered in the design and operation phase. Semi-empirical VIV prediction tools are based...
The objective of the paper is to study the effect of different parameters regarding on-bottom stability of subsea pipelines under combined irregular waves and currents. The effect of friction coefficient is first investigated. The development of lateral displacement and penetration for three...
Bakterien Moritella viscosa forårsaker sykdommen vintersår hos laks og kan føre til stor dødelighet hos smolt i sjøvann og sår hos laks som fører til nedklassing ved slakt. I tillegg til økonomiske tap er også sykdommen et velferdsproblem for fisken. Prosjektet tok sikte på å teste membranfiltrering...
SINTEF Fiskeri og havbruk arrangerte den 19. mars 2013, i samarbeid med Fiskeri- og havbruksnæringens forskningsfond (FHF), et dialogmøte med fokus på teknologi for trenging av fisk i merd. Under møtet ble status for gjeldene teknologi og operasjoner for trenging av fisk i merd, samt resultater...
When designing a new floating unit concept, static stability computations are performed in order to check stability criteria defined in regulations. Calculations for design conditions generally include the estimation of buoyancy force, gravity force and wind force acting on the floater for a given...