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A Review on Two-Phase Volumetric Expanders and Their Applications

Authors :
Marco Francesconi
Stefano Briola
Marco Antonelli
Source :
Applied Sciences, Vol 12, Iss 20, p 10328 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

The importance of volumetric expanders has been increasing in the last decades because several studies confirmed that they lead to improved energy savings, limit the environmental impact, and reduce the energy intensity of industrial and domestic applications. In particular, several applications of the two-phase volumetric expanders, in which the operating fluid consists of liquid and vapor phases, were recently proposed. Nevertheless, the contributions in the scientific literature related to the overview of the state-of-the-art aspects of this technology are rare. For this reason, the present work discussed the potentialities and drawbacks of the available typologies of volumetric expanders that process a two-phase pure working fluid by analyzing a summary of leading studies in this field to go beyond previous efforts in the literature. The analysis revealed that twin-screw machines represent the best candidates, while reciprocating piston devices seemed the least well-adapted because of their reduced tolerance to droplets and high friction losses. Flash evaporation appeared to have the most significant impact on the expander because it affects both inlet and expansion phases, thus, determining the shape of the indicated cycle and the isentropic efficiency.

Details

Language :
English
ISSN :
20763417
Volume :
12
Issue :
20
Database :
Directory of Open Access Journals
Journal :
Applied Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.169f79a93d85466a8f158ed09fcfff74
Document Type :
article
Full Text :
https://doi.org/10.3390/app122010328