| 摘要 |
<p>PURPOSE:To simultaneously measure the temperature and velocity of high- temperature fluid where dust is mixed by inserting a detection pipe made of a magnetic material into the fluid, making a heat medium flow in the detection pipe, and finding the quantity of heat transmission. CONSTITUTION:A sensor 16 is inserted into the fluid and the heat medium 1 with specific heat Cq is supplied into the detection pipe from a heat medium supply part 2 at flow rates Gq<+> and Gq- while shielded from the fluid to measure temperature TS1 before the heat medium flows in the sensor and temperature T'S0 after the heat medium flows out at the flow rates, thereby finding simulta neously the velocity V and temperature Ta from equations I, II, and III based on the surface A to which the sensor 16 with an external diameter D contacts the fluid, the heat emissivity epsilon from the fluid to the heat medium, and a con stant C1 determined by the property of the fluid. Here, the superscripts + and 1 are the temperatures measured at the flow rates Gq<+> and Gq<-> and Ts is the mean temperature (TS0-TS1)/2. Further, the constant C1 is as shown by an equation IV, where kf is the heat conductivity of the fluid, Cp the specific heat of the fluid, muf the coefficient of viscosity of the fluid, and rho the concentration.</p> |
