"The right machine in the right application" ™

Electric versus Diesel, the big debate, Is it just greener or more efficient as well?

As we distribute stationary trommel screens around the world we thought we would do a small comparison on operational costs. So how do we compare the overall operational costs of a static Trommel Screen XD720 (726) and a Mobile 720 (726) Trommel Screen. The one cost which we can calculate is the actual operational cost. The other cost is the hidden cost of not having stockpile belts and ease of mobility around a yard if needed. The fines storage can be the same but not the oversize. The table below outlines the cost comparison between two trommel screens the same size hopper and the same size trommel drum. The mobile machine has an additional four collection conveyors and onboard stockpile conveyors. We have used current diesel and electric costs both the European average and North American average as of 22nd October. The diesel engine consumes approximately 10L or 2.64 Gallons/hour. This is efficient for a mobile trommel screen. In electric costs there is only a hopper belt motor and a trommel drum drive motor totalling 25Kw. These motors normally average 60% consumption. As one can see below the Fixed Cost and Variable costs comparison is astounding. The mobile trommel screen is running over double the costs/hour over 10000 hours or five years. We have not considered any labour costs or even variation in filter costs or lubricant costs across the globe. Labour costs for servicing and re fuelling have not been added either which would also increase the costs. Do your own calculations. The question really is, do you need a mobile trommel with all the belts or would a static trommel be more cost efficient. Will one get more lifetime out of the mobile trommel screen than the static trommel screen after 10000 hours?
Total Cost/ Hour Excluding Items Below Europe Electric Static v Mobile Diesel € 14.74 € 32.05
Total Cost/ Hour Excluding Items Below USA Electric Static v Mobile Diesel $ 16.23 $ 35.43