More powerful batteries to make steam?

Could you have it connected to a static supply to get the steam up then switch over to the batteries once moving?

You could always use Lithium Ion Batteries and set light to them.

(Please don't take me seriously)

Martin

Those sums look about right, a bit less than 4kWh or about 55 18V 4Ah batteries for the run.

What this does not include of course is the much larger amount of energy needed to raise the water to boiling point in the first place.

Robert.

If you look at the link I posted near the top of the thread, you will see that supercapacitors are an order of magnitude even more worser then batteries.

Murray

No, that's the problem. You will continue to generate steam, no matter what back pressure you impose on it. You can calculate the amount of water you are converting to steam quite easily.

The heat of evaporation of water is about 2200 kJ/kg, so every 2200 J will result in the evaporation of about 1 ml of water. If you had a 2.2kW steam generator, you would evaporate about 1ml per second. The volume of steam is about 1600 times that of water at atmospheric pressure, so you would be generating about 1.6 litres of steam per second.

Obviously if you restrict it, the pressure will rise and the resultant volume per ml will decrease but it won't reach equilibrium unless you tun off the electricity or allow it to escape. Failure to do so is likely to cause you to "make mud" and put you in hospital or a box.

Murray

My 'Tongue-in-cheek' are getting worser by the minute, Murray.

Sam

In practice I'm sure they generate a fair bit less than that, bear in mind they are totally unlagged.

You could add insulation and use a high power dimmer switch to regulate the steam rate, as long as you didn't block the safety cap.

Neil