Investigations of uncertainties from hot water flowmeters using laser Doppler velocimetry

Autor:	J.-F. March
Rok vydání:	1996
Předmět:	business.industry Heat energy Nuclear engineering Velocimetry Laser Doppler velocimetry Computer Science Applications Metrology Volumetric flow rate Optics Modeling and Simulation Environmental science Acoustic Doppler velocimetry Electrical and Electronic Engineering business Instrumentation
Zdroj:	Flow Measurement and Instrumentation. 7:211-214
ISSN:	0955-5986
DOI:	10.1016/s0955-5986(96)00014-3
Popis:	Electromagnetic flowmeters will be used as working standards for determining volumetric flowrates for hot water. Flowmeters for hot water can be calibrated by the well-known mass-time method only up to 100°C. But the district heat suppliers are greatly interested in flowrate measurements at higher temperatures in order to exactly calculate the delivered heat energy. The described one-point relative method using LDV is a time-saving procedure and allows the determination of the metrological performance of flowmeters as a function of flowrate and temperature above 100°C. The relative uncertainties in the determination of the flowrates are about 0.2%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::75e50bccba6165120d85d0ab619ff919 https://doi.org/10.1016/s0955-5986(96)00014-3 Zobrazit plný text záznamu Full Text from ScienceDirect