Operational parameters are needed for analysis of the process and of the main energy consumers. Typical data for operating parameters are pressure levels and reflux ratios of columns, temperatures in heat exchangers and number of revolutions or pressure ratios for compressors.
The sources for operational parameters are design documents and actual information from the control system. Today many plants have process data information systems. In this case it is easy for the consultant to analyze the history of parameters. If an information system does not exist, then it is necessary to gather the data from local measurements or together with the plant operators.
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