The way DP flow is applied and choice of primary element often follows tried and tested methods, this can lead to higher capital expenditures (CAPEX) and operating expenditures (OPEX) costs than is necessary. The latest technology allows an alternative, better practice approach to DP flow that can result to better measurement accuracy and CAPEX and OPEX reductions.
In this study, best practices for steam flow measurement in main steam lines to allow for optimization are identified. The inherent advantages with measuring each critical point around the main steam line are discussed. There are major benefits associated with direct measurement over inferred measurement in high pressure and temperature applications. By measuring main steam line flows directly, plant and process visibility is gained. These measurements are quite accurate because changing process conditions can be captured in the flow measurement.
A technology comparison between a flow nozzle and averaging pitot tube shows the advantages of utilizing the averaging pitot tube technology for critical steam measurements. Installation and maintenance best practices are highlighted.
Another case study depicts the advantages to making direct measurements around the turbine, especially with trending demand. A case study focusing on cost savings depicts how using modern flow technology can provide significant cost and energy savings.