Submission
Process Simulation and Analysis of a Rotary -Vane Gas Refrigerating Machine for Cold Production in the Medium Temperatures Level
DOI: 10.18462/iir.compr.2021.0403
Session: Rotary, scroll, screw compressors 1
Accept state: Submission accepted
Authors
| Name | Organization | |
|---|---|---|
| Volodymyr Trandafilov, Ph.D | Odessa National Academy of Food Technologies | |
| Mykhailo Khmelniuk, Dr.Tech.Sc. | Odessa National Academy of Food Technologies | |
| Oleksii Ostapenko, Ph.D | Odessa National Academy of Food Technologies | |
| Olga Yakovleva, Ph.D | Odessa National Academy of Food Technologies |
Abstract
Stirling Gas Refrigeration machines (SRM) are very versatile for industrial cooling applications in temperature range from 4 K to 90 K. Nowadays a significant lack of cooling capacity is experienced in medium temperature range. The article is devoted to the SRM for cold production in the medium temperature range (173 tо 273 K). Structural optimization of the SRM system is performed. A fundamentally new rotary-vane design of a gas refrigerating machine is proposed. The process model simulation (PMS) of rotary-vane gas refrigerating machine (RVGRM) is developed and presented. The measurement’s uncertainty from the theoretical and computer PMS is not more than 5%, which indicates not only the qualitative data convergence, but also the quantitative. The study of the structural and regime parameters which influences on the RVGRM characteristics in the range of moderate cooling temperatures is carried out. At the fixed cooling capacity (12 kW), the RVGRM efficiency is by 15 % higher than piston SRM. Estimated mass and dimension paramaters are by 2.5 times improved. The RVGRM processes analysis for the helium, nitrogen, and methane is carried out. Replacing helium with nitrogen, both cooling capacity and Carnot efficiency (ε) are decreased by 30% and by 6% respectively. Using methane as the refrigerant in RVGRM, provides decrease in cooling capacity by more than 9% compared to helium. Heat-exchange equipment for RVGRM is developed, investigated and optimized. An estimation of RVGRM life cycle is carried out. The system environmental impact is analyzed and reduced by 37% compared to the SRM “SPC-1”.
Keywords
Stirling refrigerating machine, rotary - vane gas refrigerating machine, mass-dimensional characteristics, mathematical model, life cycle.