D5 Annex report WP 3: ETIS Database methodology ... - ETIS plus

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D5 Annex WP 3: DATABASE METHODOLOGY AND DATABASE USER MANUAL – FREIGHT TRANSPORT DEMAND Indicator Compilation Template No. 9 Ref. 1.3.1 Definition Estimated / measured energy consumption on roads ETIS Glossary Computation Method (Formula) toe per vehiclekm for road transport Consumption calculation examples from COMMUTE model, Commute software report, page 8 14 PASSENGER transport ( see specific formulas in Annex I): E total = E hot + E cold The consumption equations are similar to emissions equations, E can be understood as consumption cp. ref template 1.3.2. The factors can be derived from HBEFA Hand Book Emission factors for road Transport Hot running consumption Ehot= c*m m = n × l The hot consumption factor e has to be corrected because of the emission / consumption relevant influences and is calculated from an equation having the form: x å e c = ( ps × a s ) × ( pl × a l ) × e i, v , k i, v , s i, v , k , s i, v , u i, v , k , u i, v , k s = 1 u = 1 z å In the case of passenger cars, where load is considered not to affect emissions and consumption, this equation is further simplified: 106 Document2 27 may 2004
D5 Annex WP 3: DATABASE METHODOLOGY AND DATABASE USER MANUAL – FREIGHT TRANSPORT DEMAND x å e c = ( ps × a s ) × e i, v , k i, v , s i, v , k , s i, v , k s = 1 For the calculation of the corrected hot consumption of the vehicle fleet, the equation for the basic hot emissions has to be converted to: i = categories æ EC = å ç n × l × p × ec è w å ( ) hot , k i i i , v i , v , k i = 1 v = 1 ö ÷ ø Effectively, the product n i .l i in the above equation corresponds to “vehiclekilometre” (number of vehicles by travel distance) for each vehicle category i. For gasoline (with and without catalyst) and diesel cars (without catalyst), the formula for excess consumption) is in the following form: excess consumption= w×[f(V)+g(T)1]×h(d) d = d / d c engine start temperature (in °C) for starts at an intermediate temperature It is assumed that the excess emission of diesel cars with oxidation catalyst is proportional to the excess emission of diesel cars Document2 27 May 2004 107
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