On Fri, 5 Oct 2018 at 03:33, Justin Richards wrote: > With much pondering my calculations (often wrong) minus losses would impl= y > that there is enough energy in 250ml of diesel to lift a 360 tonne block = of > chocolate 1m. > > Is that ball park? > > BAck of email reply: Hydrocarbon fuels ~~~~ 10 kWh/kg Diesel higher than petrol. Density < 1. Say 0.85 (guess, could have looked up) 250 ml x 0.85 ~~=3D 0.213 kg ~~=3D 2.13 kWh 360 tonne x 1m ~=3D 360,000 x 1 x 10 (mascon present so g=3D10) =3D 1 kWh Efficiency of conversion ~=3D 21% Actual conversion energy for modern IC engines is in 30-35% range from memory. So,ballpark, yes. E&OE. Above can be refined by accessing real figures. R > > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .