Preliminary design of a supercritical CO2 wind tunnel

1st International Seminar on Non-Ideal Compressible-Fluid Dynamics for Propulsion & Power

物理学;力学

Re, B.^1 ; Rurale, A.^2 ; Spinelli, A.^2 ; Guardone, A.^1

Department of Aerospace Science and Technology, Politecnico di Milano, Via La Masa 34, Milan

20156, Italy^1

Department of Energy, Politecnico di Milano, Via Lambruschini 4, Milan

20156, Italy^2

关键词: Close proximity;    Compressible fluid flow;    Flow condition;    Organic Rankine cycles;    Preliminary design;    Supercritical carbon dioxides;    Supercritical CO2;    Test sections;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/821/1/012027/pdf
DOI  :  10.1088/1742-6596/821/1/012027

学科分类：力学，机械学

来源: IOP

【 摘 要 】

The preliminary design of a test-rig for non-ideal compressible-fluid flows of carbon dioxide is presented. The test-rig is conceived to investigate supersonic flows that are relevant to the study of non-ideal compressible-fluid flows in the close proximity of the critical point and of the liquid-vapor saturation curve, to the investigation of drop nucleation in compressors operating with supercritical carbon dioxide and and to the study of flow conditions similar to those encountered in turbines for Organic Rankine Cycle applications. Three different configurations are presented and examined: a batch-operating test-rig, a closed-loop Brayton cycle and a closed-loop Rankine cycle. The latter is preferred for its versatility and for economic reasons. A preliminary design of the main components is reported, including the heat exchangers, the chiller, the pumps and the test section.