Turbocompresseurs de petite taille pour un fonctionnement sur une large plage avec des jeux radiaux importants pour un concept de pompe à chaleur bi-étagée

Adeel Javed; Cordin Arpagaus; Stefan Bertsch; Jürg Schiffmann

doi:10.1016/j.ijrefrig.2016.06.015

Turbocompresseurs de petite taille pour un fonctionnement sur une large plage avec des jeux radiaux importants pour un concept de pompe à chaleur bi-étagée

Translated title of the contribution: Small-scale turbocompressors for wide-range operation with large tip-clearances for a two-stage heat pump concept

Adeel Javed, Cordin Arpagaus, Stefan Bertsch, Jürg Schiffmann

Research output: Contribution to journal › Article › peer-review

33 Citations (SciVal)

Abstract

Two mechanically driven small-scale turbocompressors running on gas lubricated bearings have been theoretically designed for a 6.5 kW two-stage heat pump functioning under variable operating conditions. The novelty in the heat pump system lies in the application of oil-free turbocompressor technology and the introduction of unused heat from various secondary heat sources. Managing the heat pump operational deviations with the secondary heat is difficult for the turbocompressors. The turbocompressors can potentially exceed their operating range defined by the surge, choke and maximum rotational speed margins. Furthermore, regulating the tip-leakage flow caused by large tip-clearances in small-scale turbomachinery is challenging. This paper will guide the readers through different stages of the design process of small-scale turbocompressors subjected to different operational and design constraints. The design review and the presented methodology will help the designers make suitable parameter selections for achieving high efficiency and wide compressor operating range.

Translated title of the contribution	Small-scale turbocompressors for wide-range operation with large tip-clearances for a two-stage heat pump concept
Original language	French
Pages (from-to)	285-302
Number of pages	18
Journal	International Journal of Refrigeration
Volume	69
Early online date	14 Jun 2016
DOIs	https://doi.org/10.1016/j.ijrefrig.2016.06.015
Publication status	Published - 30 Sept 2016
Externally published	Yes

Bibliographical note

Funding Information:
The authors would like to thank the Swiss Competence Center for Energy Research on Efficiency of Industrial Processes (SCCER EIP) and the Swiss Federal Office for Energy (SFOE) (Project no. SI/501185 ) for their financial support, and Prof. Michael Casey and Dr. Daniel Rusch for their useful discussions and insights.

Publisher Copyright:
© 2016 Elsevier Ltd and IIR

Funding

The authors would like to thank the Swiss Competence Center for Energy Research on Efficiency of Industrial Processes (SCCER EIP) and the Swiss Federal Office for Energy (SFOE) (Project no. SI/501185 ) for their financial support, and Prof. Michael Casey and Dr. Daniel Rusch for their useful discussions and insights.

Keywords

Computational fluid dynamics (CFD)
Optimum blade design
Small-scale turbocompressors
Tip-clearance effects
Two-stage heat pump
Two-zone meanline modeling

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering

Access to Document

10.1016/j.ijrefrig.2016.06.015

Cite this

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title = "Turbocompresseurs de petite taille pour un fonctionnement sur une large plage avec des jeux radiaux importants pour un concept de pompe {\`a} chaleur bi-{\'e}tag{\'e}e",

abstract = "Two mechanically driven small-scale turbocompressors running on gas lubricated bearings have been theoretically designed for a 6.5 kW two-stage heat pump functioning under variable operating conditions. The novelty in the heat pump system lies in the application of oil-free turbocompressor technology and the introduction of unused heat from various secondary heat sources. Managing the heat pump operational deviations with the secondary heat is difficult for the turbocompressors. The turbocompressors can potentially exceed their operating range defined by the surge, choke and maximum rotational speed margins. Furthermore, regulating the tip-leakage flow caused by large tip-clearances in small-scale turbomachinery is challenging. This paper will guide the readers through different stages of the design process of small-scale turbocompressors subjected to different operational and design constraints. The design review and the presented methodology will help the designers make suitable parameter selections for achieving high efficiency and wide compressor operating range.",

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author = "Adeel Javed and Cordin Arpagaus and Stefan Bertsch and J{\"u}rg Schiffmann",

note = "Funding Information: The authors would like to thank the Swiss Competence Center for Energy Research on Efficiency of Industrial Processes (SCCER EIP) and the Swiss Federal Office for Energy (SFOE) (Project no. SI/501185 ) for their financial support, and Prof. Michael Casey and Dr. Daniel Rusch for their useful discussions and insights. Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd and IIR",

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N1 - Funding Information: The authors would like to thank the Swiss Competence Center for Energy Research on Efficiency of Industrial Processes (SCCER EIP) and the Swiss Federal Office for Energy (SFOE) (Project no. SI/501185 ) for their financial support, and Prof. Michael Casey and Dr. Daniel Rusch for their useful discussions and insights. Publisher Copyright: © 2016 Elsevier Ltd and IIR

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Turbocompresseurs de petite taille pour un fonctionnement sur une large plage avec des jeux radiaux importants pour un concept de pompe à chaleur bi-étagée

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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