Expanders in refrigeration system - general information

Konrad KURYŁO; Adam RUCIŃSKI

Konrad KURYŁO Warsaw University of Technology, Warsaw, Poland
Adam RUCIŃSKI Warsaw University of Technology, Warsaw, Poland https://orcid.org/0000-0001-6545-9865

Keywords: refrigeration, expander, expander efficiency

Abstract

The paper presents the causes of research on the use of expanders in refrigeration systems. The possible types of expander are introduced. The turbine expander was selected for the comparative analysis. The results of theoretical and experimental work on cooling cycles with carbon dioxide as refrigerant in the supercritical and subcritical systems equipped with turbine decompressors were presented. It has been proven that the use of expanders has enabled energy savings in the level of 25\%.