Features of refrigeration screw compressor operation at ambient temperature decrease
With a decrease in ambient temperature, the heat gain on the refrigeration machine and condensation pressure decrease, which requires a decrease in cooling capacity and geometric compression ratio of the screw compressor. A condensation pressure decrease below a certain value disrupts the stable...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Omsk State Technical University, Federal State Autonomous Educational Institution of Higher Education
2020-10-01
|
| 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/2020/%D0%A2.%204,%20%E2%84%96%203%20(%D0%90%D0%A0%D0%B8%D0%AD%D0%9C)/9-14%20%D0%9D%D0%BE%D1%81%D0%BA%D0%BE%D0%B2%20%D0%90.%20%D0%9D.,%20%D0%A8%D0%B0%D0%BF%D0%BE%D1%88%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2%D0%B0%20%D0%9C..pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | With a decrease in ambient temperature, the heat gain on the refrigeration machine and condensation
pressure decrease, which requires a decrease in cooling capacity and geometric compression ratio of
the screw compressor. A condensation pressure decrease below a certain value disrupts the stable
operation of throttling devices. The article describes the operation scheme of the refrigeration machine
with a screw compressor and a liquid pump before the throttling devices, which allows it to work at
a decreased condensation pressure. The dependences of changes in net efficiency, cooling capacity,
power consumption and cooling coefficient at full and partial capacity with co-regulation of cooling
capacity and geometric compression ratio are given. The experimental and calculated characteristics of
a screw compressor operating with R22 freon are used |
|---|---|
| ISSN: | 2588-0373 2587-764X |