The effect of velocity ratio on thermal-hydraulic performance of reciprocating scraped surface heat exchangers at low Reynolds number

  1. Solano Fernández, Juan Pedro 1
  2. García Pinar, Alberto 1
  3. Vicente Quiles, Pedro Ginés 1
  4. Viedma Robles, Antonio 1
  1. 1 Universidad Politécnica de Cartagena
    info

    Universidad Politécnica de Cartagena

    Cartagena, España

    ROR https://ror.org/02k5kx966

Actas:
ExHFT-7, 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics: Polonia, del 28 de junio al 3 de julio de 2009

Año de publicación: 2009

Tipo: Aportación congreso

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Resumen

The thermal-hydraulic performance of a reciprocating scraper inserted in a round tube at low Reynolds number is studied. Pressure drop and heat transfer characteristics have been experimentally determined in static conditions in laminar regime (Reh=30), and results are contrasted with dynamic performance at several velocity ratios (ω=0.1 - 1). Maximum increases of Fanning friction factor of the order of 1.2 have been found, together with increases in Nusselt number of the order of 2, using propylene-glycol as working fluid.