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Metso DNA Boiler Performance Monitoring

The Metso DNA Boiler Performance Monitoring (DNA Boiler Monitoring) application calculates, stores and displays the main performance parameters that indicate the condition and operating efficiency of boilers. The calculations are based on boiler heat balance and built in accordance with DIN 1942 standard. The main result of the calculations - boiler efficiency - is calculated either by input-output method or by heat loss method, depending on the fuel burned.

The storing of history values enables long term reporting and trending of performance parameters thus helping to detect gradual changes in boiler performance.

Introduction

Meeting the growing requirements for cost-effective and undisturbed operation in today’s economical environment drives power plants to reach for the best possible performance and higher availability. Power plants can no longer afford to operate without knowing the exact boiler efficiency at all times or without taking immediate actions when problems occur. Boiler performance has a remarkable effect on power plant economy - 1 % improvement in boiler efficiency means annual saving in fuel cost up to 200 000 EUR depending on plant size.

The DNA Boiler Monitoring application - a Metso DNA Plant Management application* - provides the power plant maintenance and operating personnel with valuable information about the performance, condition and operating efficiency of the boilers both in real time and in history.

The user interface of the application consists of customized display(s) and report(s) containing the measured and/or calculated data. All calculations are based on existing instrumentation.

The DNA Boiler Monitoring application is a standardized application that can be used for different types of boilers, such as fluidized bed boilers, pulverized coal fired boilers, oil/gas fired boilers and grate-fired boilers. The application has three calculation modes to meet the different requirements of boilers burning different types of fuels.


Benefits

The DNA Boiler Monitoring provides the power plant maintenance and operating personnel with a tool that helps to detect potential problems in boiler operation and analyze problems occurred. This contributes towards proactive responding to failures before they cause unpredicted shutdowns.

The extensive storage of history data enables also long-term monitoring of gradual component deterioration and thus better scheduling of maintenance.

The DNA Boiler Monitoring application is linked seamlessly to the overall automation applications, which guarantees efficient collaboration between plant management and plant control.




Features

The application includes calculation of the boiler heat balance and the main performance parameters, such as boiler efficiency by input-output method or by heat loss method. The calculations are built in accordance with the DIN 1942 standard.

The application has three calculation modes to meet the different requirements of boilers burning different kinds of fuels

  • Mode 1: fuel flow and fuel properties are known, efficiency is calculated by input-output method
  • Mode 2: fuel flow is not known and fuel properties are known, the efficiency is calculated by input-output method
  • Mode 3: fuel flow and fuel properties are not known, efficiency is calculated by heat loss method

The user interface of the application collects the performance data of the boiler into easy-to-understand and easy-to-work-with report(s) and display(s).

The Boiler Performance Display shows the current status of boiler heat balance together with boiler performance parameters in a visualized form.

The Boiler Performance Report represents the long-term summary values of boiler heat balance and performance parameters.

Trends - for selected performance values - can be utilized to provide a quick overview of the performance as well as the direction and magnitude of change.