METHOD OF DETERMINING VAPOUR DRYNESS Russian patent published in 2011 - IPC G01N25/60 

FIELD: physics.

SUBSTANCE: method of determining vapour dryness involves collecting a sample of humid vapour, measuring temperature of said sample, measuring temperature of the superheated sample and the calculating dryness. The vapour sample of constant mass undergoes constant-volume heating. Also, pressure of the sample before and after heating is measured, after which vapour dryness is calculated using the formula: where P₁ is pressure before heating the sample; P₂ is pressure after heating; T₁ is temperature of the sample of humid vapour; T₂ is temperature of the superheated sample. When determining vapour dryness, temperature and pressure are measured successively using one temperature measuring apparatus and one pressure measuring apparatus, respectively.

EFFECT: high measurement accuracy and simple apparatus for measuring dryness of humid vapour.

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