FIELD: heat-supply systems of industrial enterprises. SUBSTANCE: pipelines have two large-diameter portions with sudden flow expansion arranged in tandem their flow sections being different. Pressure drop across these portions as well as temperature and pressure upstream of these portions are measured. Measurement data are processed in computer by solving set of equations for energy and momentum of two-phase flow for two local-drag sections. EFFECT: improved accuracy and enlarged measurement range. 2 dwg
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