Method for measuring average velocity pressure and system thereof
First Claim
1. A method for measuring an average velocity pressure of a pipe, comprising:
- providing a total pressure measuring device;
obtaining a total pressure through the total pressure measuring device disposed at a first location in the pipe;
measuring at least one physical parameter between the first location and an outlet of the pipe;
obtaining a formula of a static pressure and the average velocity pressure between the outlet and the first location by comparing the physical parameter to known fluid mechanics data; and
obtaining the average velocity pressure from the formula and the total pressure.
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Abstract
A method for measuring average velocity pressure of a stack comprises the following steps. First, a total pressure measuring device is provided. The total pressure measuring device then measures the total pressure at a first location in the stack. Next, physical parameters comprising a distance between the first location and an outlet of the stack, a diameter and shape thereof are obtained. A formula of a static pressure and the average velocity pressure between the outlet and the first location is obtained by comparing the physical parameters to known fluid mechanics data. Finally, the average velocity pressure is obtained from the formula and the total pressure.
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Citations
21 Claims
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1. A method for measuring an average velocity pressure of a pipe, comprising:
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providing a total pressure measuring device;
obtaining a total pressure through the total pressure measuring device disposed at a first location in the pipe;
measuring at least one physical parameter between the first location and an outlet of the pipe;
obtaining a formula of a static pressure and the average velocity pressure between the outlet and the first location by comparing the physical parameter to known fluid mechanics data; and
obtaining the average velocity pressure from the formula and the total pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for measuring an average velocity pressure of a pipe, comprising:
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providing a total pressure measuring device and a static pressure measuring device;
obtaining a total pressure through the total pressure measuring device disposed at a first location in the pipe;
obtaining an end static pressure through the static pressure measuring device disposed at a second location in the pipe;
measuring at least one physical parameter between the first location and the second location;
obtaining a formula of a static pressure drop and the average velocity pressure between the first location and the second location by comparing the physical parameter to known fluid mechanics data; and
obtaining the average velocity pressure from the formula, the total pressure, the end static pressure and the static pressure drop. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A pressure measuring system for measuring an average velocity pressure between a first location and an outlet of a pipe, comprising:
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a total pressure measuring device, disposed at the first location in the pipe obtaining a total pressure;
a processor, coupled to the total pressure measuring device and obtaining the average velocity pressure according to the total pressure and at least one physical parameter between the first location and the outlet; and
an output device, coupled to the processor and outputting the average velocity pressure. - View Dependent Claims (18)
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19. A method for measuring an average velocity pressure of a pipe, comprising:
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providing a total pressure measuring device;
obtaining a total pressure through the total pressure measuring device disposed at a first location in the pipe;
measuring at least one physical parameter between the first location and an outlet of the pipe;
obtaining a formula of the total pressure and the average velocity pressure between the outlet and the first location by comparing the physical parameter to known fluid mechanics data; and
obtaining the average velocity pressure from the formula. - View Dependent Claims (20, 21)
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Specification