Oh no, emailing again On filling the tank have a lag of material (or even put it in the tank with high surface area) that changes phase so would tend to suppress the adiabatic heating but release this energy back to the gas. That would make it easier to cram a lot of charge into the tank without the tendency of fighting the rise in temperature and needing to have excessively high pressure tanks.
Use gearing on the electrical regenerative braking. Make the dump load variable so the force felt back at the wheels is not suddenly large (due to all the gearing) but can go right down to slow speeds. This would be better than a compressor which is just a Carnot engine. Would be a fun project. Haven't got the time or resources. You know how long getting funds takes. I especially like the 'active tank'/compensated tank concept using a phase changing buffer to keep the heat and pressure down in the tank. Must get on now. -----Original Message----- From: Remi Cornwall [mailto:[EMAIL PROTECTED] Sent: 29 October 2008 10:39 To: [email protected] Subject: RE: [Vo]:TOTALLY SEEN IT NOW. Tata Motors - full of compressed air! The penny has dropped completely now. Totally see it. "H." at QMUL is right but so am I. Imagine we somehow get the brake heat back to the tank. The shell could be glowing red hot but if it doesn't have time to equilibrate the ****charge in the tank would be used up in the normal fashion like nothing happened****. Heat conduction is a 2D process. Potentially slow. Somehow getting that fraction of the brake back to the tank by COMPRESSION (a 3D process acting on all the gas) would be more efficient. Hence "H."s suggestion at QMUL that people use a SMALL regenerator tank to kick the next power demand. However... If the tank was ***space filled*** with an electric element (so large surface area) and glowed very hotly, most of the 'dead' k.e. *would* be returned to the tank very quickly before the next power demand... But electrical regenerative braking is not good at slow speeds and won't static brake. The best suggestion and they probably do it already is to lag the tank at the compressing plant. The area between the adiabatic line and the isothermal line (which the tank would drop to without lagging) is just wasted energy. Good fun. Back to TEC and other stuff I do.
