Performance of the LDA Volumetric Flow Rate Standard Under Severely Disturbed Flow Conditions |
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| Felix Heitmann, Jonas Steinbock, Markus Juling |
- Abstract:
- In thermal power plants, flow meters are operated at high temperatures and pressures and often encounter disturbed flow profiles. This leads to an increased measurement uncertainty, which limits the save operating range of flow rates and hence the plant’s power output. Therefore, the laser optical flow rate standard (LFS) was developed. It is designed to allow the on-site calibration of industrial flow meters in power plants at high temperatures and pressures. It makes use of the metrologically traceable and non-invasive laser Doppler anemometry (LDA) to measure the velocity field simultaneously with two LDA systems. The volumetric flow rate is then determined by means of integration. Here, we present flow rate measurements for fully developed pipe flow and 6 pipe diameters downstream of a disturbance generator. The mean deviation in flow rate between the two LDA systems was 0.05 %, with a mean deviation from the gravimetrical reference flow rate of 0.12 %. The highest deviations from the reference were 0.21 % and 0.31 %, for the two systems respectively.
- Download:
- IMEKO-TC9-2019-090.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC9
- Event name:
- FLOMEKO 2019
- Title:
18th International Flow Measurement Conference 2019
- Place:
- Lisbon, PORTUGAL
- Time:
- 26 June 2019 - 28 June 2019