Engineering often installed at the exit of the anechoic static pressure box, reduce the dynamic pressure, increase the static pressure. Its kinetic energy is transformed into pressure energy, and the pressure increases.Įxtended reading: wireless pressure transmitterġ.Total pressure: air conditioning units or fresh air units are often installed at the end of the fan, the fan outlet wind speed is high, high dynamic pressure, static pressure is small. The fluid is completely blocked, where the fluid velocity is 0. Dynamic pressure: When the object is moving in the fluid, the surface in the direction of the fluid movement.Static pressure: the pressure on the surface of an object at rest or in uniform linear motion.Total pressure: The pressure measured parallel to the wind flow, directly opposite to the direction of the wind flow. ![]() The difference between static pressure, dynamic pressure and total pressure If the atmospheric pressure is the starting point of the calculation, it can be positive or negative.Įxtended reading: Pressure indicator transmittersĮxtended reading: Pressure Sensor Applications-Featured Industry Applications The total pressure represents the total energy of 1m3 of gas. The total pressure is the algebraic sum of the static and dynamic pressures: Pq=Pi+Pb. Dynamic pressure = 0.5 * air density * wind speed 2. ![]() Dynamic pressure (Pb).ĭynamic pressure refers to the pressure generated by the flow of air, as long as the air flow in the duct has a certain dynamic pressure, and is positive. The static pressure is positive when it is higher than atmospheric pressure, and negative when it is lower than atmospheric pressure. The static pressure of air in air conditioning refers to the relative static pressure. The static pressure with atmospheric pressure as the zero point is called relative static pressure. When calculating, the static pressure with absolute vacuum as the calculation zero points are called absolute static pressure. Static pressure is the pressure generated by the air molecules hitting the duct wall due to irregular movement. The unit is mmHg or kg/㎡ or Pa, respectively. When the air flows along the inner wall of the duct, its pressure can be divided into static pressure, dynamic pressure and full pressure. The vertical force acting on the unit area of the fluid is called pressure. ![]() Static pressure vs dynamic pressure vs total pressureĪccording to the knowledge of fluid mechanics.
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