Application of indirect circulation loops with carbon dioxide in refrigeration cycles
author:
MATEUSZ PAWŁOWSKI
ORCID ID:
0000-0003-3313-1261
No:
05/2022 Instal p. 27-33
DOI:
DOI 10.36119/15.2022.5.5
The paper provides with a review of indirect cooling systems with a circulation loop with carbon dioxide as
a working fluid. A technical solution was also proposed, consisting in coupling a propane compressor cooling
system unit with a two-phase CO2 loop. A general calculation approach was presented for the flow resistance
occurring in the installation because of the prepared maps of two-phase flow patterns in the horizontal and vertical
channels. The focus of the calculations was to determine the appropriate height of the liquid column to enable
proper operation of the system. The paper is an introduction to the currently undertaken development works on
innovative solutions of indirect refrigeration systems for commercial refrigeration.
Keywords:
About Authors:
mgr inż. Mateusz Pawłowski https://orcid.org/ 0000-0003-3313-1261 – Katedra Techniki Cieplnej, Wydział Mechaniczny, Politechnika
Białostocka. Corresponding author: m.pawlowski@pb.edu.pl