Techniques to measure volumetric flow and particulate concentration in stacks with cyclonic flow
Abstract
It was determined that an in stack venturi can accurately measure volumetric flow in stacks with a severe cyclonic flow profile. The design requirements of the venturi are described. Also described was a low head loss, egg crate shaped device that effectively straightens cyclonic flow. Installation of such a device after a tangential inlet to a tall stack can result in considerable energy savings because it takes less fan power to push the straightened flow. Results to determine the particulate distribution downstream of the egg crate were inconclusive.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- August 1982
- Bibcode:
- 1982STIN...8316706S
- Keywords:
-
- Energy Conservation;
- Flow Measurement;
- Particle Density (Concentration);
- Stacks;
- Venturi Tubes;
- Chimneys;
- Concentration (Composition);
- Flowmeters;
- Measuring Instruments;
- Particulate Sampling;
- Fluid Mechanics and Heat Transfer