- #1
mawais15
- 24
- 0
have a manometer. i want to measure the static pressure for calculation of axial flow fan efficiency. please tell me how would i do it.
Regards.
Regards.
Skrambles said:http://en.wikipedia.org/wiki/Pressure_measurement
Scroll down to the section on hydrostatic pressure and take a look at the manometer diagram/formula. You'll need to know the density of the fluid in your manometer. Are you sure you're trying to measure the static pressure and not the stagnation pressure?
mender said:To increase the resolution, mount the manometer on a slant. For example, a 30 degree slant will double the reading.
russ_watters said:You're also measuring the static pressure at the fan intake plenum, right...?
Static pressure is the force per unit area exerted by a fluid, such as air or water, on a surface that is at rest. It is an important measurement in fluid mechanics as it can affect the performance of various systems, such as ventilation and air conditioning systems, by determining the direction and flow of the fluid.
Static pressure can be measured using a device called a manometer, which consists of a U-shaped tube filled with a liquid, such as water or mercury. The difference in height between the two sides of the U-tube is directly proportional to the static pressure being measured.
The most common units for measuring static pressure are pascals (Pa) or kilopascals (kPa). Other units that may be used include inches of water column (in. WC), pounds per square inch (psi), and millimeters of mercury (mmHg).
Static pressure measurements can be affected by various factors, such as temperature, humidity, and altitude. These factors can change the density of the fluid being measured, which in turn can affect the accuracy of the measurement.
Static pressure measurements are used in many real-world applications, such as HVAC systems, aerodynamics, and fluid dynamics. They can help engineers and designers optimize the performance of these systems by ensuring proper air flow and pressure levels. They can also be used to diagnose problems or malfunctions in these systems.