- Author
- Fanney, A. H. | Dougherty, B. P.
- Title
- Measurement of Buoyancy-Induced Flow Using a Self-Heated Thermistor Flowmeter.
- Coporate
- National Bureau of Standards, Gaithersburg, MD Virginia Polytechnic Institute and State Univ., Blacksburg
- Journal
- Journal of Solar Energy Engineering, Vol. 109, 34-39, February 1987
- Keywords
- thermistors | flow measurement | anemometers | dissipation | fluid temperature | velocity
- Abstract
- The development and calibration of a self-heated thermistor anemometer is described. The variation in thermistor power dissipation as a function of fluid temperature and velocity is presented. The thermistor flowmeter, which evolves from this investigation, is used to measure the buoyancy-induced flow in a thermosyphon solar hot water system. Measured flow rates for a representative day are presented. A dimensionless heat transfer analysis, applied to the thermistor probe, yielded results in good agreement with classical heat transfer correlations for spheres.