BS ISO 11042-1:1996

1 Scope
2 Normative references
3 Definitions
4 Symbols
5 Conditions
    5.1 Gas turbine and fuel
    5.2 Measured values
    5.3 Standard conditions
6 Measurements
    6.1 Determination of constituents in exhaust gas
    6.2 Guideline for the arrangement of the measurement
          system
    6.3 Performing the test, test report, evaluation
7 Instrumentation
    7.1 Types of measuring device
    7.2 Specification for NOx analysers
    7.3 Specification fo CO and CO2 analysers
    7.4 Specification for sulfur oxides analysers
    7.5 Specification for unburned and partially burned
          hydrocarbons analysers
    7.6 Specification for ammonia analysers
    7.7 Specification for oxygen analysers
    7.8 Specification for smoke analysers
    7.9 Specification for solid particle analysers
8 Quality of measurement
    8.1 Preamble
    8.2 Methods for calibration
9 Conversion of data
    9.1 General
    9.2 Conversion between wet and dry exhaust gas
    9.3 Conversion to the particular exhaust gas oxygen level
    9.4 Conversion to the constituent mass flow related to the
          dry exhaust gas volume flow at normal conditions and
          to a specific oxygen content
    9.5 Conversion to power output related values
    9.6 Conversion to consumed fuel energy related values
Annexes
A Typical example of test results and their evaluation
B Information regarding the major consituents of the exhaust
    gas
C Physical properties of gaseous constituents
D Bibliography

Defines methods for evaluating and measuring emission of exhaust gases from gas turbines and, gives emission terms. Gives requirements for test environment and instrumentation in addition to the measurement quality and data correction. Also states relationship between various forms of expressing exhaust emissions.

This part of ISO11042 establishes the methods used for the measurement and evaluation of the emission of the exhaust gases from gas turbines and defines appropriate emission terms. It presents requirements for the test environment and instrumentation as well as the quality of measurement and correction of data. This allows uniform judgement of the exhaust emissions. The relationship between the various forms of expressing the exhaust emissions is also given.

The constituents to be measured in accordance with this part of ISO11042 standard should be determined by mutual agreement between the parties involved.

This part of ISO11042 is applicable for all gas turbines producing mechanical shaft power and/or which are used as drivers for electrical generation excluding application in aircraft. For installations which include an exhaust gas heat recuperation system, the definitions of this part of ISO11042 can be used as a basis.

This part of ISO11042 is applicable for gas turbines which utilize the open cycle process. It is also applicable as a basis for gas turbines which utilize the semi-closed cycle and gas turbines equipped with free piston compressors or with special heat sources.

This part of ISO11042 can be used as an acceptance test for gas turbine exhaust gas emissions.