Method for measuring the full range in quality of a vapor

Claim 1

A method for determining the quality of a fluid vapor comprising the steps of (1) providing a source of fluid vapor, (2) directing a portion of said fluid vapor through an open insulated sampling chamber at substantially the same pressure and temperature as the fluid vapor in said source, (3) sealing said chamber to seal a representative portion of fluid vapor therein, (4) applying heat to said representative portion of fluid vapor to change the state of said representative portion of fluid vapor to a superheated or liquid condition, (5) cooling said representative portion of fluid vapor to establish a cooling mode for said superheated vapor or liquid wherein the temperatures and pressures during said cooling mode are recorded, (6) utilizing the temperature and pressure readings during said cooling mode while in the superheated state to determine the specific volume of the fluid vapor source; and (7) thereafter determining the quality of said fluid vapor source by the following equation: V.sub.a =V.sub.b =V.sub.f +X(V.sub.g -V.sub.f) wherein V a and V b individually is the specific volume of the representative portion; V g is the dry saturated specific volume of the fluid vapor source; V f is the wet saturated specific volume of the fluid vapor source; and X is the quality of the fluid vapor source.

Claim 2

A method for determining the quality of a fluid vapor comprising the steps of (1) providing a source of fluid vapor, (2) directing a portion of said fluid vapor through an open insulated sampling chamber at substantially the same pressure and temperature as the fluid vapor in said source, (3) sealing said chamber to seal a representative portion of fluid vapor therein, (4) applying heat to said representative portion of fluid vapor to change the state of said representative portion of fluid vapor to a superheated or liquid condition, (5) cooling said representative portion of fluid vapor to establish a cooling mode for said superheated vapor or liquid wherein the temperatures and pressures during said cooling mode are recorded, (6) utilizing the temperature and pressure readings during said cooling mode while in the superheated state to determine the specific volume of the fluid vapor source; and (7) thereafter determining the quality of said fluid vapor source by the following equation: V.sub.a =V.sub.b =V.sub.f +X(V.sub.g -V.sub.f) wherein V a and V b individually is the specific volume of the representative portion; V g is the dry saturated specific volume of the fluid vapor source; V f is the wet saturated specific volume of the fluid vapor source; and X is the quality of the fluid vapor source.