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Title: Critical Flow Sonic Nozzles Gas Flow Facility With Medium-Pressure And Closed-Loop Pipelines
Author: Sun Lijun Feng Qianqian Li Shengjie Tang Bing Zhang Tao
Source: Flomeko 2013
Year Published: 2013
Abstract: The requirement of gas flow facility with high pressure is increasing. But, the experiences of development the closedloop high pressure facility are not enough. Critical flow sonic Nozzles gas flow facility with medium-pressure and Closed-Loop pipelines at Tianjin University Flow Lab was presented in the paper. The performance indexes, the flow loop, the uncertainty analysis of the facility were described. Discharge coefficient correction of nozzles at medium pressure and the flow rate stability control were shown in detail. The pressure of the facility is 0.31.6 MPa, the flow rate is 0.5120 m3/h at working status, the uncertainty is better than 0.3% (2).

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