Estimation of Dryness Fraction and Mass Discharge of Geothermal Bores
- 1 June 1957
- journal article
- Published by SAGE Publications in Proceedings of the Institution of Mechanical Engineers
- Vol. 171 (1) , 967-982
- https://doi.org/10.1243/pime_proc_1957_171_077_02
Abstract
A method is described in which flow nozzles were used for investigating steam-water mixtures discharging horizontally from geothermal bores. British Standard and 25-deg. approach nozzles were modified, so that the density in a small column, with the throat diameter as axis, could be estimated by measuring the absorption of beta rays, in their passage diametrically through the mixture. A single density determination is shown to be sufficient to estimate the dryness fraction. If the upstream pressure is also noted then the mass output can be calculated using an empirical equation similar in form to the single-phase mass-discharge equation derived from Bernoulli's principle. For the dryness fraction one calibration curve suffices for 25-deg. approach nozzles of various diameters. By nozzle rotation the angular distribution of the water was measured and hence its cross-sectional area.This publication has 0 references indexed in Scilit: