Abstract
The adoption of highly efficient vapour-compression heating, ventilation, air conditioning and refrigeration (HVAC&R) systems is compulsory to achieve a low-carbon society. Expansion work recovery using a two-phase ejector is widely recognized as one of the most promising measures to improve the energy efficiency of HVAC&R units. This holds true for all operation conditions provided that an effective capacity control technique is implemented. In this work a thorough critical review on the current status of the presently available capacity control strategies for two-phase ejectors was carried out. In addition, their pros and cons as well as the comparison of their performance were reported. It was concluded that two-phase ejectors can be properly capacity controlled in large- and medium-scale vapour-compression units. However, a suitable capacity control mechanism for small-scale vapour-compression solutions still requires a major breakthrough and is being intensively discussed among experts in the field.
Translated title of the contribution | A review on current status of capacity control techniques for two-phase ejectors |
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Original language | French |
Pages (from-to) | 64-79 |
Number of pages | 16 |
Journal | International Journal of Refrigeration |
Volume | 119 |
DOIs | |
State | Published - Nov 2020 |
Keywords
- Capacity control
- Expansion work recovery
- Multi-ejector
- Needle ejector
- Vapour-compression system
- Vortex ejector
ASJC Scopus subject areas
- Building and Construction
- Mechanical Engineering