Theoretical and Experimental Investigations on the Radial and Axialleakages within a Rotary Vane Expander

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F19%3A00334241" target="_blank" >RIV/68407700:21720/19:00334241 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.energy.2019.116097" target="_blank" >https://doi.org/10.1016/j.energy.2019.116097</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.energy.2019.116097" target="_blank" >10.1016/j.energy.2019.116097</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Theoretical and Experimental Investigations on the Radial and Axialleakages within a Rotary Vane Expander

Popis výsledku v původním jazyce

Rotary vane expander (RVE) is a perspective type of a volumetric expander for small series manufacturing due to its simple geometry and low manufacturing costs. Performance of this type of expander is usually worse in comparison with other volumetric expanders but it can be improved if we understand well the phenomena that occur during expansion within the vane expander. This work provides a theoretical and experimental analysis of the influence of various leakage pathways on the behaviour of a RVE. The RVE used in this work has been specifically modified for the possibility of adjusting the axial and radial clearances. Experimental data for the both clearances ranging from þ0 to þ0.5 mm were used to set up a 1D mathematical model, which, provides accuracy of parameter prediction within ±5%. Such model can be further used for optimization and design of RVE. In this paper, the model was used to analyse the effect of reducing manufacturing tolerances on the expander parameters. Analyses are performed for constant pressure difference (common in literature), as well as for the regime of constant heat input of the thermodynamic cycle (better reflects the conditions of the real expander operation and its effect to the entire cycle).

Název v anglickém jazyce

Theoretical and Experimental Investigations on the Radial and Axialleakages within a Rotary Vane Expander

Popis výsledku anglicky

Rotary vane expander (RVE) is a perspective type of a volumetric expander for small series manufacturing due to its simple geometry and low manufacturing costs. Performance of this type of expander is usually worse in comparison with other volumetric expanders but it can be improved if we understand well the phenomena that occur during expansion within the vane expander. This work provides a theoretical and experimental analysis of the influence of various leakage pathways on the behaviour of a RVE. The RVE used in this work has been specifically modified for the possibility of adjusting the axial and radial clearances. Experimental data for the both clearances ranging from þ0 to þ0.5 mm were used to set up a 1D mathematical model, which, provides accuracy of parameter prediction within ±5%. Such model can be further used for optimization and design of RVE. In this paper, the model was used to analyse the effect of reducing manufacturing tolerances on the expander parameters. Analyses are performed for constant pressure difference (common in literature), as well as for the regime of constant heat input of the thermodynamic cycle (better reflects the conditions of the real expander operation and its effect to the entire cycle).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/LO1605" target="_blank" >LO1605: Univerzitní centrum energeticky efektivních budov – Fáze udržitelnosti</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Energy

ISSN

0360-5442

e-ISSN

1873-6785

Svazek periodika

189

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

000506901100089

EID výsledku v databázi Scopus

2-s2.0-85072619522