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Numerical investigation of counter flow plate heat exchanger

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F15%3A00002774" target="_blank" >RIV/46747885:24210/15:00002774 - isvavai.cz</a>

  • Výsledek na webu

    <a href="http://www.sciencedirect.com/science/article/pii/S1876610215028532" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1876610215028532</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.egypro.2015.12.188" target="_blank" >10.1016/j.egypro.2015.12.188</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Numerical investigation of counter flow plate heat exchanger

  • Popis výsledku v původním jazyce

    Flow and heat transfer in a recuperative counter flow plate air-to-air heat exchanger were investigated numerically using Fluent software. It was employed previously developed methods to generate a computational mesh and assumed a zero thickness of the plates to calculate the flow in an air-to-air heat exchanger. Pressure loss and effectiveness were evaluated as functions of inner velocity. Obtained numerical data were substituted by suggested functions dependent on the Reynolds number. A function for the loss coefficient was based on the presumption that losses consist of local losses and friction losses. The function for the Nusselt number used the ordinary power function of the Reynolds number for forced convection. The effect of material thickness on pressure loss and effectiveness was illustrated. Even a very thin material for the plate significantly affects pressure loss, while the effect on the effectiveness depended on the thermal conductivity of plate material used. From this results, it is obvious that a thin as possible material is crucial for creating the most effective recuperative air-to-air heat exchanger with high effectiveness and low pressure loss, while the properties of the material itself are unimportant. We compared numerical data with data obtained by measuring a real heat exchanger. The results for effectiveness corresponded well and corrections made were negligible. The results for pressure loss differed significantly, but this difference was lowered by correcting for plate thickness.

  • Název v anglickém jazyce

    Numerical investigation of counter flow plate heat exchanger

  • Popis výsledku anglicky

    Flow and heat transfer in a recuperative counter flow plate air-to-air heat exchanger were investigated numerically using Fluent software. It was employed previously developed methods to generate a computational mesh and assumed a zero thickness of the plates to calculate the flow in an air-to-air heat exchanger. Pressure loss and effectiveness were evaluated as functions of inner velocity. Obtained numerical data were substituted by suggested functions dependent on the Reynolds number. A function for the loss coefficient was based on the presumption that losses consist of local losses and friction losses. The function for the Nusselt number used the ordinary power function of the Reynolds number for forced convection. The effect of material thickness on pressure loss and effectiveness was illustrated. Even a very thin material for the plate significantly affects pressure loss, while the effect on the effectiveness depended on the thermal conductivity of plate material used. From this results, it is obvious that a thin as possible material is crucial for creating the most effective recuperative air-to-air heat exchanger with high effectiveness and low pressure loss, while the properties of the material itself are unimportant. We compared numerical data with data obtained by measuring a real heat exchanger. The results for effectiveness corresponded well and corrections made were negligible. The results for pressure loss differed significantly, but this difference was lowered by correcting for plate thickness.

Klasifikace

  • Druh

    D - Stať ve sborníku

  • CEP obor

    JE - Nejaderná energetika, spotřeba a užití energie

  • OECD FORD obor

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/TA01020313" target="_blank" >TA01020313: Vývoj entalpického výměníku tepla vzduch-vzduch</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Ostatní

  • Rok uplatnění

    2015

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název statě ve sborníku

    Sustainability in Energy and Buildings: Proceedings of the 7th International Conference SEB-15

  • ISBN

  • ISSN

    1876-6102

  • e-ISSN

  • Počet stran výsledku

    9

  • Strana od-do

    341-349

  • Název nakladatele

    Elsevier Ltd.

  • Místo vydání

    Lisbon

  • Místo konání akce

    Lisbon, Portugal

  • Datum konání akce

  • Typ akce podle státní příslušnosti

    WRD - Celosvětová akce

  • Kód UT WoS článku