Fedorova M. A. Elbel S., Hrnjak P. Performance optimization of two-stage compressor system using transcritical R744 / trans. from Engl. M. A. Fedorova
The use of transcritical R744 systems has become increasingly popular in recent years in a variety of different applications. For applications that span a wide temperature range between the heat source and heat sink, the use of two-stage compressor results in numerous advantages in terms of effici...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Omsk State Technical University, Federal State Autonomous Educational Institution of Higher Education
2021-06-01
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| Series: | Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение" |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2021/%D0%A2.%205,%20%E2%84%96%202%20(%D0%90%D0%A0%D0%B8%D0%AD%D0%9C)/66-77%20%D0%AD%D0%BB%D1%8C%D0%B1%D0%B5%D0%BB%D1%8C%20%D0%A1.,%20%D0%A5%D1%80%D0%BD%D1%8F%D0%BA%20%D0%9F..pdf |
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| Summary: | The use of transcritical R744 systems has become increasingly popular in recent years in a variety of
different applications. For applications that span a wide temperature range between the heat source
and heat sink, the use of two-stage compressor results in numerous advantages in terms of efficiency
and compressor discharge temperature. This paper presents experimental data for a transcritical R744
compressor system operating at high heat rejection temperatures. A comprehensive system model was
developed and validated with the experimental results. Based on this, the simulation tool was used to
further optimize the system design specifically to accommodate the two-stage compression process.
The optimum heat transfer area distribution has been determined to simultaneously ensure efficient
intercooling at intermediate pressure and gas cooling at the high-pressure level. Simultaneously, the
system was also optimized with respect to optimal intermediate pressure and the results show that for
this particular system, the optimum intercooler pressure deviated substantially from the standard design
approach that uses the geometric mean between suction and discharge pressures |
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| ISSN: | 2588-0373 2587-764X |