Organizing process data and trending performance to troubleshoot heat exchanger operation
Edgeview® is a trend analysis tool that assists processors in troubleshooting heat exchanger operations. Using a time-based table of operating data, Edgeview reconciles the data by removing gross errors and rapidly calculates a number of performance indicators for shell-and-tube heat exchangers. The software’s parallel-processing features allow users to execute a rigorous Xist® case at multiple operating points more than eight times faster than running the cases in Xist alone. The software highlights performance shortfalls, making it easy for users to generate cases for thorough troubleshooting.
Troubleshooting Heat Exchangers Using Edgeview
Troubleshooting operation of process heat exchangers often involves the time-consuming effort of analyzing operating data recorded over extended periods. Xist is useful for this analysis since it calculates a vast amount of incremental performance parameters and can be used to identify adverse conditions. However, many data records contain gross errors that make time-stamped data tables from plant data historians unsuitable for running in Xist. Even after a user removes or corrects the gross errors, line-by-line input to Xist can be quite time-consuming. With a Microsoft Excel®-based tool, such as the HTRI parametric spreadsheet, analyzing daily records over several months often requires hours of effort.
Edgeview speeds up this process by identifying and filtering many of the gross errors in data records and facilitating parallel processing of Xist. The analysis can be further streamlined by using customized post-processing diagnostics to analyze the Xist results. With post-processing diagnostics, the opportunities for Edgeview applications increase substantially.
Two examples of where Edgeview has been used:
Stab-in reboiler performance: For accurate performance simulation of a stab-in reboiler, Edgeview analyzed more than 7000 data records. The analysis distinguished between fouling and other degradation mechanisms, while assessing reboiler performance with enhanced tubes installed.
Thermosiphon reboiler monitor: A customized operator dashboard was created to observe the onset of film boiling and loss of circulation of a vertical tubeside thermosiphon in real time. The project demonstrated that Edgeview could process thermosiphon data quickly enough to provide real-time monitoring.
- Input review: Review data in tabular format and sort using column headers
- Data modification: Directly edit the values, and insert or delete entire rows of data
- Data reconciliation: Eliminate rows of bad data to expedite processing and focus results
- Data table creation: Use filtering options to segment data based on a range or limit of values and then populate additional tables
- Ability to plot data: Create plots of generated output tables showing multiple series of data (e.g., fouling resistance and duty ratio)
- Connection to Xist: Report on time-based values as calculated in Xist
You must have the following to run Edgeview successfully:
Microsoft Windows 8.1, Windows 10 (Anniversary Update or newer), Server 2008 R2 Service Pack 1, Server 2012, Server 2016, Server 2019
- 32- or 64-bit processor
- 2 GB RAM
- Approximately 2 GB hard drive space