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Microcap & Penny Stocks : DCH Technologies (DCH) -- Ignore unavailable to you. Want to Upgrade?

To: IRVINESULLY who wrote (301)	1/11/1999 5:56:00 AM
From: Dr. Harvey	Respond to of 2513

Here is an interesting hydrogen project in Munich, hyweb.de The Hydrogen Project at Munich International Airport Project description The system comprises two parallel hydrogen supply paths, one for the refueling of three apron buses with gaseous hydrogen (GH2) and one for the refueling of passenger cars with liquid hydrogen (LH2). Gaseous hydrogen is produced autonomously on-site using high pressure electrolysis. Liquid hydrogen shall be delivered in trailers from a nearby liquefaction plant and will be stored in the LH2-storage tank of the station. Refueling of passenger cars with liquid hydrogen will be done fully automatic with a specially developed refueling robot. The LH2 refueling station is located outside the closed airport zones, open to the public. Hydrogen from the electrolysis unit goes first into a hydride based intermediate storage unit. Together with a special heating- and cooling system this unit provides the subsequent gas compressor with a constant inlet pressure even at varying hydrogen production rates from the electrolysis unit. The compressor raises the gas pressure to the level of the GH2 high pressure storage unit, from where it can be transferred into the bus tanks via the GH2-Dispenser. The link between liquid and gaseous supply paths guarantees the hydrogen supply for the buses in times of maintenance work on the hydrogen production path. In this case a high pressure pump pressurises subcooled liquid hydrogen coming from the LH2 storage tank up to the pressure of the GH2 high pressure storage unit. After passing the LH2 vaporizer the warm high pressure gas can then be fed into the GH2 high pressure storage unit. The individual subsystems of the plant are integrated into a computerised central control unit. This control unit coordinates the various operational sequences of the subsystems and guarantees in conjunction with the hydrogen detector network the safe operation of the complete system.