Design of centrifugal compressors for heat pump systems

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

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Design of centrifugal compressors for heat pump systems. / Meroni, Andrea; Zühlsdorf, Benjamin; Elmegaard, Brian; Haglind, Fredrik.

In: Applied Energy, Vol. 232, 2018, p. 139-156.

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

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@article{a11b5e367a0e4aaab102eded1959a1fc,
title = "Design of centrifugal compressors for heat pump systems",
abstract = "This work presents a mean-line model of a centrifugal compressor and a method for a coupled optimization with a heat pump system. The compressor model was validated with five test cases from the open literature including the working fluids: air, refrigerant R-134a and carbon dioxide. Afterwards, the compressor model was coupled and optimized with that of a heat pump cycle supplying steam at 150 °C. Two cycle configurations were considered: an open-loop system using steam, and a closed-loop system with five other working fluid candidates. The compressor was designed using a multi-objective optimization algorithm, which seeks to maximize simultaneously the cycle coefficient of performance and the supplied heat flow rate. The method employed in this work considers the possible trade-offs regarding cycle and compressor design criteria, and can be used to identify cost-effective solutions for the next generation of heat pumps. The obtained results suggest that a two-stage compressor using steam yields the highest values of coefficient of performance and heat supply, and at the same time requires a more challenging compressor design.",
keywords = "Turbocompressor, Validation, Preliminary design, Refrigerant, High-temperature heat pump, 2010 MSC: 00-01 99-00",
author = "Andrea Meroni and Benjamin Z{\"u}hlsdorf and Brian Elmegaard and Fredrik Haglind",
year = "2018",
doi = "10.1016/j.apenergy.2018.09.210",
language = "English",
volume = "232",
pages = "139--156",
journal = "Applied Energy",
issn = "0306-2619",
publisher = "Pergamon Press",

}

RIS

TY - JOUR

T1 - Design of centrifugal compressors for heat pump systems

AU - Meroni, Andrea

AU - Zühlsdorf, Benjamin

AU - Elmegaard, Brian

AU - Haglind, Fredrik

PY - 2018

Y1 - 2018

N2 - This work presents a mean-line model of a centrifugal compressor and a method for a coupled optimization with a heat pump system. The compressor model was validated with five test cases from the open literature including the working fluids: air, refrigerant R-134a and carbon dioxide. Afterwards, the compressor model was coupled and optimized with that of a heat pump cycle supplying steam at 150 °C. Two cycle configurations were considered: an open-loop system using steam, and a closed-loop system with five other working fluid candidates. The compressor was designed using a multi-objective optimization algorithm, which seeks to maximize simultaneously the cycle coefficient of performance and the supplied heat flow rate. The method employed in this work considers the possible trade-offs regarding cycle and compressor design criteria, and can be used to identify cost-effective solutions for the next generation of heat pumps. The obtained results suggest that a two-stage compressor using steam yields the highest values of coefficient of performance and heat supply, and at the same time requires a more challenging compressor design.

AB - This work presents a mean-line model of a centrifugal compressor and a method for a coupled optimization with a heat pump system. The compressor model was validated with five test cases from the open literature including the working fluids: air, refrigerant R-134a and carbon dioxide. Afterwards, the compressor model was coupled and optimized with that of a heat pump cycle supplying steam at 150 °C. Two cycle configurations were considered: an open-loop system using steam, and a closed-loop system with five other working fluid candidates. The compressor was designed using a multi-objective optimization algorithm, which seeks to maximize simultaneously the cycle coefficient of performance and the supplied heat flow rate. The method employed in this work considers the possible trade-offs regarding cycle and compressor design criteria, and can be used to identify cost-effective solutions for the next generation of heat pumps. The obtained results suggest that a two-stage compressor using steam yields the highest values of coefficient of performance and heat supply, and at the same time requires a more challenging compressor design.

KW - Turbocompressor

KW - Validation

KW - Preliminary design

KW - Refrigerant

KW - High-temperature heat pump

KW - 2010 MSC: 00-01 99-00

U2 - 10.1016/j.apenergy.2018.09.210

DO - 10.1016/j.apenergy.2018.09.210

M3 - Journal article

VL - 232

SP - 139

EP - 156

JO - Applied Energy

JF - Applied Energy

SN - 0306-2619

ER -