Hydrogen Generator Diagram A hydrogen cooled turbo generator is a turbo generator with gaseous hydrogen as a coolant. hydrogen cooled turbo generators are designed to provide a low drag atmosphere and cooling for single shaft and combined cycle applications in combination with steam turbines. [1] because of the high thermal conductivity and other favorable properties of. 98%. 99%. =((0.99*1) (0.01*14.4))*100. because air is 14 times as dense as hydrogen, the density of the fluid in the generator casing rises quickly with air impurity level. as can be seen from the equation, every 1 percent of air contamination is worth about 14% increase in fluid density. increased fluid density means increased windage loss.
Figure 2 From Development Of World S Largest Hydrogen Cooled Turbine This drawing shows the unit 1 generator field (1935) which is air cooled; in 1943 hydrogen cooling became practical, which reduced the field size by about 30%. Hydrogen cooled generator. (gen h) ge’s hydrogen cooled generator systems are the right fit for high efficiency applications and can operate in both simple and combined cycle power plants. their high power output makes them a more cost effective than solution than many water cooled machines. up to 755 mva. apparent power. up to 99.02%. Generator designs for today’s applications must be cost effective while achiev ing high reliability and improved efficiency. to meet these challenges, ge power systems has introduced three new products during the past 18 months: the 7a7 and the 9a4 air cooled gen erators, and the 390h hydrogen cooled genera tors. Hydrogen cooled turbo generators are characterized by a compact design, lowest losses in operation and the highest possible efficiency due to the characteris tics of hydrogen (h 2) – having better heat dissipation than air, low density and thermal conductivity. the absence of oxygen (o2) prevents from damaging the generator’s high voltage.
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