Yup that's why Aviation fuel is based on heavy oils like octane or kerosene (8-16 carbons long) rather than pentane/petroleum gas (cars use)... wait, wouldn't they want to pack in the most energy per mass?Longbolt wrote:Yeah, this is just for game balance, but I suppose concessions can be made. However, heavy oil has more impurities, doesn't combust as well, and requires pre-heating - all which uses up energy and makes it less efficient.
despite impurities and the preheating necessary longer chain hydrocarbons contain more energy than their smaller chain brethren by more than enough to compensate for this perceived inefficiency, and we're assuming that the oil refineries actually remove impurities to a practical level as part of their fractional distillation process
Though going too long (18 carbons or longer) makes the chains non-volatile and without aeration the molecule has no oxygen to combust with making Lube a non combustible fuel.Quantum_mechanic wrote:Trains would be able to run more smoothly on lubricant.
Methane/Ethane (1/2 carbons) will heat water and food but don't have the energy density for combustion engines and aren't practical for portable applications
Butane/Propane (3/4 carbons) are a higher energy density perfect for transportable gas stoves and LPG is just about sustainable for engines although dangerous
Pentane-Octane (5-8 carbons) are good fuels for combustion engines without requiring pressurization or excessive preheating at ground level
Octane-Hexadecane (8-16 carbons) are high energy, not volatile at lower pressures, require extra technology to work but is more than compensated for by increased energy
Lubricants (18-34 carbons) are high energy almost completely non volatile, will burn slower but producing more energy per gram as length increases, though over longer time
Plastics (uncountable carbons) are about the most energy dense hydrocarbon and can (in game) be basically analogous to solid fuel (mixed plastic) and plastic bars (refined plastic)
which brings me to the final point
We have solid fuel we can already use heavy oil light oil and petroleum as fuels for our trains with only one extra stepLongbolt wrote:TL;DR: Liquids should be usable fuel resources. It’s really friggin dumb this isn’t in the game by default.