Setup and characterisation of a multi-purpose test rig for R744 refrigerating cycles and equipment

Autor: Andrea Chesi, Fabio Tarani, Lorenzo Ferrari, Giovanni Ferrara
Rok vydání: 2012
Předmět:
Zdroj: International journal of refrigeration 35 (2012): 1848–1859. doi:10.1016/j.ijrefrig.2012.06.005
info:cnr-pdr/source/autori:Chesi, Andrea; Ferrara, Giovanni; Ferrari, Lorenzo; Tarani, Fabio/titolo:Setup and characterization of a multi-purpose test rig for R744 refrigerating cycles and equipment/doi:10.1016%2Fj.ijrefrig.2012.06.005/rivista:International journal of refrigeration/anno:2012/pagina_da:1848/pagina_a:1859/intervallo_pagine:1848–1859/volume:35
ISSN: 0140-7007
DOI: 10.1016/j.ijrefrig.2012.06.005
Popis: Following a widespread trend in international research on R744 cooling applications, the authors have developed a test rig for investigating refrigerating cycles and equipment which operates with such refrigerant. The facility was designed aiming to a compact layout and to a high flexibility in terms of cycles and pieces of equipment to be tested. The test rig can operate stand-alone thanks to a passive load management system which works with water as secondary fluid. The paper gives some useful data, based on direct experience, for the realization and management of a multi-purpose test rig that allows the analysis of several cycle layouts over wide operating ranges. Some of the main critical issues related to proper plant and component design, a correct choice of the measurement equipment and a suitable system management are shown and discussed. The paper also includes experimental data obtained while testing a reciprocating compressor and a single-stage cycle layout both with and without using an internal heat exchanger.
Databáze: OpenAIRE