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
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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
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ISSN
1876-6102
e-ISSN
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Počet stran výsledku
9
Strana od-do
341-349
Název nakladatele
Elsevier Ltd.
Místo vydání
Lisbon
Místo konání akce
Lisbon, Portugal
Datum konání akce
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Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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