DYNAMIC TEMPERATURE EFFECTS IN A CLEARANCE-SEALED PISTON PROVER FOR GAS FLOW MEASUREMENTS

J Kutin, G Bobovnik, I Bajsić
Abstract:
This paper deals with the dynamic temperature effects in a high-speed, clearance-sealed realization of a piston prover. A dynamic mathematical model was built to study the temperature variations and to estimate their influence on the flow measurements. The mathematical model is formulated on the basis of lumped-element models of the piston and the gas cavity. The energy balance for the gas cavity includes the convective heat exchange with the surroundings. One of the potential effects results from the temperature differences betwen the inlet gas flow and the cylinder wall. In addition, the piston prover's operation generates dynamic temperature variations which are mainly related to the pressure change due to the flow redirection and to the pressure oscillations due to the piston's resonance effects.
Keywords:
dynamic temperature effects, piston prover
Download:
IMEKO-TC9-2013-054.pdf
DOI:
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Event details
IMEKO TC:
TC9
Event name:
FLOMEKO 2013
Title:

16th International Flow Measurement Conference

Place:
Paris, FRANCE
Time:
24 September 2013 - 26 September 2013
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