Blar i HVL Open på forfatter "Kosinska, Anna Dorota"

Viser treff 1-10 av 10

    • Direct absorption solar collector: Use of nanofluids and biodegradable colloids 

      Nguyen, Linna V.; Kosinski, Pawel Jan; Balakin, Boris; Kosinska, Anna Dorota (Peer reviewed; Journal article, 2023)
      In this paper, an experimental and numerical analysis was performed on both carbon black nanofluids and a biodegradable fluid in a novel pump-free direct absorption solar collector (DASC). In the experiments, the nanofluid ...

    • Experimental investigation of erosion due to nanofluids 

      Braut, Marthe; González-Fernández, Luis; Kosinska, Anna Dorota; Grosu, Yaroslav; Kosinski, Pawel Jan; Balakin, Boris (Peer reviewed; Journal article, 2022)
      The demand for efficient and sustainable energy is continuously increasing. Among the many technologies with great potential within this field are nanofluids. Nevertheless, there is still a considerable lack of information ...

    • Exploring the use of nanofluids in pump-free systems for solar thermal applications 

      Kosinska, Anna Dorota; Balakin, Boris; Kosinski, Pawel Jan (Peer reviewed; Journal article, 2023)
      By using nanofluids as a working fluid in pump-free designs, thermal energy systems can become more efficient and have reduced maintenance costs, ultimately extending the system’s lifespan. In this paper, our goal is to ...

    • Extension of the hard-sphere model for particle-flow simulations 

      Kosinski, Pawel Jan; Balakin, Boris; Kosinska, Anna Dorota (Peer reviewed; Journal article, 2020)
      Discrete element methods require appropriate models for particle-particle collisions. Usually, researchers use soft-sphere types of models where the collision dynamics is solved numerically. This makes the simulation ...

    • Field study on the thermal performance of vacuum tube solar collectors in the climate conditions of Western Norway 

      Popsueva, Victoria; Olivares, Lopez Andres F; Kosinska, Anna Dorota; Nikolaev, Oleg; Balakin, Boris (Peer reviewed; Journal article, 2021)
      A significant part of energy consumption in Northern countries goes to heating. There is no consensus about the most efficient source of renewable heat there. This paper presents a field study for a 7.8 m2 vacuum tube solar ...

    • Numerical analysis of erosion due to nanoparticles in a pipe elbow 

      Kosinska, Anna Dorota; Balakin, Boris (Journal article; Peer reviewed, 2018)
      Flows of fluids laden with small particles in pipes are common in industry. An interesting and still unexplored issue is erosion of walls due to impact of particles. The main focus of our research was on nanoparticles. ...

    • Photothermal convection of a magnetic nanofluid in a direct absorption solar collector 

      Balakin, Boris; Stava, Mattias; Kosinska, Anna Dorota (Peer reviewed; Journal article, 2022)
      Nanofluid-based direct absorption of solar heat results in thermal efficiencies superior to conventional solar thermal technology. In addition, convection of nanofluid can be sustained pump-free in the collector. In this ...

    • Photothermal conversion of biodegradable fluids and carbon black nanofluids 

      Kosinska, Anna Dorota; Balakin, Boris; Kosinski, Pawel Jan (Peer reviewed; Journal article, 2022)
      The paper is devoted to the topic of direct absorption solar collectors (DASCs). Various kinds of fluids can be used as heat transfer fluid in DASCs, and the main focus of our paper is on comparing nanofluids (water with ...

    • Theoretical analysis of erosion in elbows due to flows with nano- and micro-size particles 

      Kosinska, Anna Dorota; Balakin, Boris; Kosinski, Pawel Jan (Peer reviewed; Journal article, 2020)
      The present paper focuses on the issue of erosion due to fluid flow laden with nano- and microparticles. We investigated the case of a pipe elbow using theoretical analysis and numerical simulations. For the case when the ...

    • Use of biodegradable colloids and carbon black nanofluids for solar energy applications 

      Kosinska, Anna Dorota; Balakin, Boris; Kosinski, Pawel Jan (Peer reviewed; Journal article, 2021)
      The conversion of solar energy to heat can be performed in direct absorption solar collectors, where the radiation from the sun is absorbed by a fluid. There are various types of fluids that can be used, and recently, ...