Size of the orifice plate

Depends on process parameters, temperature, pressure difference, density

This post was last edited by “Hasty Passerby” on February 12, 2018, at 10:18. 1. First, it’s necessary to distinguish whether the original poster is referring to a flow-restricting orifice plate or the orifice plate used in a throttling device: The physical dimensions of a flow-restricting orifice plate are determined based on the relevant parameters of the flanges used for its installation on the pipeline, and are not affected by any calculations. The dimensional dimensions of the orifice plate in the throttling device need to be determined based on the calculation results. 2. Secondly, the opening size of the orifice plate must be calculated and determined: The calculation of the orifice plate involves numerous process parameters, such as the flow rate, pressure, temperature, density, compressibility coefficient, viscosity of the fluid, pipe diameter, pipe material, flow regime, length of the straight section in the pipeline, and allowable pressure loss, among others.

It depends on the process parameters: the temperature of the medium, the pressure difference across the orifice plate, and its density.

The question isn’t specific enough. Could you please explain it in more detail?

It mainly depends on the gas flow rate and pipeline pressure. For example, increasing the pipeline pressure can boost the gas flow rate, but when the pipeline pressure reaches its upper limit, it is necessary to replace it with an orifice plate of a larger diameter.