Site Survey—Measured Variables

The tables that follow go through a site survey. Table 9.1 covers the ambient air to the cooler. Table 9.2 covers the cooling air to the burner. Table 9.3 covers the coal conveying air, and Tables 9.4 and 9.5 cover the limestone and the dust. Table 9.6 covers the properties of the natural gas input and the kiln exit gas. Table 9.7 covers the kiln dimensions and shell temperatures. 

Measurement Number ( ) Value (m/s) Measurement Number ( ) Value (m/s) Average Velocity (m/s) Area (m2) Volume (m /s) 

Natural gas Composition N2% 02% C02% CH4% C2H,% C3Hs% C4Hio% CsHi2% C6Hi4% 

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UNODC has also started to conduct yield surveys in some countries, measuring the yield of test fields, and to develop methodologies to extrapolate the yields from proxy variables, such as the volume of poppy capsules or the number of plants per plot. This approach is used in South-East Asia as well as in Afghanistan. All of this is intended to improve yield estimates, aiming at information that is independent from farmers reports. The accuracy of the calculated yields depends on a number of factors, including the number of sites investigated. In the case of Afghanistan the confidence interval for the mean yield results in the 2006 survey was, for instance, +/- 3% of the mean value (tt= 0.1). 

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