Comparison of single-hole and multi-hole orifice energy consumption

Abstract

Nowadays, with rising energy prices, energy efficiency is playing an important role in all industries. Differential pressure-based measuring instruments are still widely used instruments with orifice flow meters being the most popular ones. Due to its simplicity, reliability, and ease of maintenance, orifice flow meters are very common measuring instruments in many industries. As these instruments are differential pressure-based instruments, they are increasing energy costs due to increased pressure loss. Conventional single-hole orifice (SHO) flow meters have many advantages but also some disadvantages that are affecting energy efficiency. These disadvantages like higher pressure difference, slower pressure recovery, lower discharge coefficient can be overcome by multi-hole orifice (MHO) flow meters. Computational fluid dynamics (CFD) simulations were used to study energy consumption of both SHO and MHO with four different β parameters. Results showed MHO to be more energy efficient compared to SHO with same β parameter. These results are showing one more advantage MHO have compared to SHO, but further research is needed to make them a drop-in replacement.

Preliminary Validation of Turbulent Flow Through an Orifice Meter

“…This finding is further corroborated by a more recent research [3], which has reported that multi-hole orifice has then tendency to accelerate pressure recovery, reduce pressure drop and increase discharge coefficient. Furthermore, compared to orifices with lower β parameters, those with higher β parameters (ratio of orifice diameter to pipe diameter) exhibited reduced power consumption and relative power loss [4].…”

Special Collection on advanced practices in aerospace and energy engineering

“…2 The presented results (pressure, velocity, and temperature profiles) match well with other results from literature and are easily applicable. On the other hand, Bikić et al 3 numerically and experimentally investigates the benefits (mostly visible in lower energy consumption) of a novel design of flow meters, typically employed in industry due to their simplicity, reliability, and ease of maintenance. Another industrial application, a transient analysis of hydropower plants, is presented in Svrkota et al 4 From a data analysis performed on 270 hydropower plants with crossflow turbines, a simple mathematical model that estimates the turbine performance characteristics is formed.…”