Features of refrigeration screw compressor operation at ambient temperature decrease
| Autor: | A. N. Noskov, M. Shaposhnikova |
|---|---|
| Jazyk: | English<br />Russian |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", Vol 4, Iss 3, Pp 9-14 (2020) |
| Druh dokumentu: | article |
| ISSN: | 2588-0373 2587-764X |
| DOI: | 10.25206/2588-0373-2020-4-3-9-14 |
| Popis: | 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 |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|