Wyniki wyszukiwania dla: u-bend

• Experimental investigation on straight and u-bend double tube heat exchanger with active and passive enhancement methods

  Publikacja

  • R. Andrzejczyk
  • T. Muszyński
  • P. Kozak

  - MATEC Web of Conferences - Rok 2018

  Authors in this work want to demonstrate the possibility to increase the heat transfer efficiency by using simple wire coil inserts to create turbulent flow in the boundary layer as well as air blowing into the annulus of the pipe. In the study, Wilson plot approach was applied in order to estimate heat transfer coefficients for all heat exchanger (HX) configurations. The study focuses on experimental values of heat transfer coefficient...

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• Thermal and economic investigation of straight and U-bend double tube heat exchanger with coiled wire turbulator

  Publikacja

  • R. Andrzejczyk
  • T. Muszyński

  - Archives of Thermodynamics - Rok 2019

  Experimental research has been carried out for four individual heat exchanger constructions, i.e., plain double tube, turbulized double tube, plain U-bend and U-bend with turbulator. Tests were made for the water-water system. The study covered a wide measuring range, i.e., Re = 800–9000 – on the shell side, for a constant cold water temperature of 9 ◦C and hot water of 50 ◦C. The heat exchangers were made from copper tubes with...

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• Experimental investigation of heat transfer enhancement in straight and U-bend double-pipe heat exchanger with wire insert

  Publikacja

  • R. Andrzejczyk
  • T. Muszyński
  • P. Kozak

  - CHEMICAL ENGINEERING AND PROCESSING - Rok 2019

  In this paper, the possibility of heat transfer enhancement in the U-bend exchanger was presented. Experimental research has been carried out for four individual heat exchanger constructions i.e. plain tube in tube, turbulized tube in tube, plain U-bend and U-bend with turbulator. Also, heat transfer experiments for various boundary conditions were performed to obtain reference values. In case of U-bend exchanger with and without...

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• Experimental and comparative study on the two-phase pressure drop of air-water mixture in U-bend and straight pipe annuli

  Publikacja

  • R. Andrzejczyk
  • T. Muszyński

  - Journal of Physics : Conference Series - Rok 2018

  In this paper, the experimental and theoretical analysis of pressure drop in singlephase and two phase-flow were presented for straight and U-bend smooth tube annulus and tube annulus with wire coil insert. Experiments for various boundary conditions were performed. In case of U-tube and straight tube with and without turbulator, tests were made for the water-water and air-water systems. The study covered a wide measuring range,...

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• Experimental and Computational Fluid Dynamics Studies on Straight and U-Bend Double Tube Heat Exchangers with Active and Passive Enhancement Methods

  Publikacja

  • R. Andrzejczyk
  • T. Muszyński
  • P. Kozak

  - HEAT TRANSFER ENGINEERING - Rok 2021

  In this work, the authors wanted to demonstrate the possibility to increase the heat transfer efficiency by using simple wire coil inserts to create turbulent flow in the boundary layer as well as air blowing into the annulus of the pipe. Experimental investigations were carried out for four heat exchanger constructions, i.e., plain double tube, turbulized double tube, plain U-bend double tube, U-tube with turbulator, plain double...

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• Distortions in structures of the twist bend nematic phase of a bent-core liquid crystal by the electric field

  Publikacja

  • K. Merkel
  • A. Kocot
  • J. Vij
  • G. Shanker

  - Physical Review E - Rok 2018

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• Composite GFRP U-shaped footbridge

  Publikacja

  • J. Chróścielewski
  • M. Miśkiewicz
  • Ł. Pyrzowski
  • K. Wilde

  - Polish Maritime Research - Rok 2017

  The paper presents proposals for the use of glass fiber reinforced polymer composites for the construction of engineering objects, known and commonly used in the shipbuilding industry. An example of a pedestrian footbridge was used in this case, which, despite the considerable thickness of the structural material, was made using infusion technology in one production cycle. The designed and produced footbridge span is durable, dynamically...

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• Crkva u svijetu

  Czasopisma

  ISSN: 0352-4000

• A + U-ARCHITECTURE AND URBANISM

  Czasopisma

  ISSN: 0389-9160

• Trendovi u poslovanju

  Czasopisma

  ISSN: 2334-816X , eISSN: 2334-8356