Návrh měření průtoku přehřáté páry a napájecí vody pomocí dýz

Abstract

The most frequent methods of measuring the liquid flow are presented in this bachelor thesis. It is the introduction to the essential flow measuring instruments - either for velocity and for volume. The principle and the technique of usage are described and compared mutually. The emphasis is put on the flow measurement through the use of throttling bodies, nozzles concretely. The flow measurement of superheated steam and the feed water flow by nozzles for two sensors of differential pressure with various amplitudes are designed in the applicative part of the bachelor thesis. Farther, the suitability of the thermojunction application and the resistance sensor of the temperature Pt100 are judged. In conclusion, the suggested variants of the measuring are compared in the light of economics and measuring preciseness.