A5011886391- Solar Thermal and Photovoltaic Systems
- Nanofluid Flow and Heat Transfer
- Particle Dynamics in Fluid Flows
- Solar-Powered Water Purification Methods
- Granular flow and fluidized beds
- Spacecraft and Cryogenic Technologies
- Methane Hydrates and Related Phenomena
- Cyclone Separators and Fluid Dynamics
- Heat Transfer Mechanisms
- Fluid Dynamics and Heat Transfer
- Heat Transfer and Boiling Studies
- Fluid Dynamics and Mixing
- Combustion and Detonation Processes
- Heat Transfer and Optimization
- Lattice Boltzmann Simulation Studies
- Aerosol Filtration and Electrostatic Precipitation
- Fluid Dynamics and Turbulent Flows
- Erosion and Abrasive Machining
- Icing and De-icing Technologies
- CO2 Sequestration and Geologic Interactions
- Phase Change Materials Research
- Nasal Surgery and Airway Studies
- Cavitation Phenomena in Pumps
- Superconducting Materials and Applications
- Hybrid Renewable Energy Systems
Western Norway University of Applied Sciences
2017-2024
National Research Nuclear University MEPhI
2017-2022
Institute of Thermal Physics
2021
Institute of Engineering Physics
2018-2020
University of Bergen
2008-2017
Tallinn University of Technology
2017
Chevron (United States)
2008
The concept of direct absorption solar collector (DASC) was introduced in the 1970s. Multiple laboratory studies proved that nanofluid-based DASCs presented a fruitful alternative to conventional collectors. However, due environmental and cost limitations nanofluids, there are few records real-size operating field conditions. Filling gap, we report 5-month seasonal study for full-scale DASC with an eco-friendly low-cost nanofluid. Throughout experiments, competed commercial flat plate...
Nanofluid-based direct absorption of solar heat results in thermal efficiencies superior to conventional technology. In addition, convection nanofluid can be sustained pump-free the collector. this article, we study an aqueous magnetic capable establish photothermal a lab-scale collector equipped with solenoid. The consisted 60-nm Fe2O3 particles dispersed distilled water at concentration range 0.5% wt.-2.0% wt. An empirical model was developed based on experiments. accounted for and...
Abstract This article describes a computational model for the size evolution of hydrate particles in pipeline‐pump system with turbulent flow. The is based on population balance principle, and simulation results were validated data from an experimental study flow loop containing reported literature. It found that particle significantly influenced by aggregation breakage, related to shear flow, these effects are comparable those growth nucleation, diffusional processes. Two different...
Nanofluids are promising receivers for solar collectors with volumetric absorption. These 1.2…1.4 times more efficient than conventional technology. However, most of the considered nanofluids expensive and toxic. This work demonstrates how to treat instant coffee produce inexpensive environmentally friendly collectors. Our nanofluid contains particles an average size below 100 nm. The extinction coefficient is up 300 1/m when 2% wt. used. toxicity same order as coolants.
The present paper focuses on the issue of erosion due to fluid flow laden with nano- and microparticles. We investigated case a pipe elbow using theoretical analysis numerical simulations. For when particles were large, that is, micrometre size, we observed expected behaviour in which rate was greater increasing particle diameter. same seen for velocity, higher velocities promoted process. small particles, however, increased decreasing size. This explained by formation secondary flows...
Solar energy is the most promising source of renewable energy. However, solar harvesting process has relatively low efficiency, while practical use challenging. Direct absorption collectors (DASC) have been proved to be effective for a variety applications. In this article, numerical study nanofluid direct collector was performed using computational fluid dynamics (CFD). A rectangular DASC with incident light on top surface simulated an Eulerian–Eulerian two-phase model. The model validated...
The conversion of solar energy to heat can be performed in direct absorption collectors, where the radiation from sun is absorbed by a fluid. There are various types fluids that used, and recently, nanofluids (i.e., liquids with immersed nanoparticles) have been investigated researchers. Nevertheless, inherent drawbacks such as cost, toxicity, clogging. This paper considers use inexpensive neutral environment, namely, coffee colloids. These already tested for applications, but they not yet...
In this paper, an experimental and numerical analysis was performed on both carbon black nanofluids a biodegradable fluid in novel pump-free direct absorption solar collector (DASC). the experiments, nanofluid consisted of nanoparticles water with concentrations ranging from 0.005 to 0.020 wt%, while coffee colloid. The overall findings indicated concurrence: exhibited best thermal performance when compared pure water. optimum nanoparticle concentration 0.010 wt% yielded 102% enhancement...