Experimental research on typical interchangeability discriminance applicability of domestic gas appliance.

The AGA Indices method and weaver indices method are typical overseas interchangeability discriminant methods. Under the background of interchangeability of multi-source natural gas in Shanghai, the pipeline gas in lab is used as reference gas, the AGA Indices (IL, IF, IY) and Weaver Indices (JH, JA, JF, JL, JI, JY) of all kinds of substitute gas were calculated. The interchangeability of reference gas and substitute gas was analyzed theoretically and experimentally. Finally, compared tests with the calculation results, analyzed and discussed the domestic applicability of two indices methods. The tests proved AGA Indices method could well predicted interchangeability but did not give the emission index of CO, while Weaver Indices could well predict flame-out, backfire and heat load change but did not accurately reflect yellow flame and CO emission. Therefore, in order to reflect completely the results of interchangeability by pure index methods, it is necessary to analyze the interchangeability combining domestic reality with two indices methods. Nowadays experiment is still an essential way for identifying interchangeability. And gas interchangeability should not be confused with gas classification. [ABSTRACT FROM AUTHOR]