Test Framework for Documenting Emissions and Energy Reductions of WMA and Conventional HMA

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来源：NAPA 发布日期：2008-4-14

Introduction:

Stack testing should include mass emissions rate measurement of NOx, CO2, and VOC to compare stack emissions from WMA technologies and conventional HMA. It is suggested that stack emissions reporting be standardized as lbs per hour (of mix produced) and include a recording and reporting of average production rate in tons HMA or WMA produced per hour, during each test period. Testing should be performed by a certified tester and should include either two (2) or three (3) 60-minute stack sampling runs per technology, if possible. Note: the number of runs may have to be adjusted to the available run time using WMA technology. Production rates should be recorded every 15 minutes during each test run and used to determine average production rate in tons mix produced per hour for each run. The data from all individual test runs during a test period (conventional HMA or WMA) should be averaged to determine the overall results for each technology. Stack gas volumetric flow rates, moisture content, and a variety of other parameters should also be determined for each run, in accordance with U.S. EPA stack testing methodology. In order to assess fossil fuel and energy use reductions, it is suggested that beginning and end fuel usage data be recorded for each test run. This may be accomplished with direct fuel usage meter readout, where available, or by tank gauging as appropriate.

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