NOVELTY - The system has hydrogen cylinder (11) that contains pressurization hydrogen. A fuel cell main portion (12) is provided to transform chemical energy produced by hydrogen gas oxidation into electrical energy. A peltier device (13) is configured to support cylinder through heat radiating unit. The reaction heat of main portion is applied to cylinder through warm air path with warm air fan (14). The heat is generated at peltier device upper surface by thermally absorbing direct current produced by main portion at peltier device lower surface, and transmitted to cylinder bottom section.    USE - Operational system of fuel cell for discharging hydrogen gas from hydrogen cylinder to fuel cell main portion.    ADVANTAGE - The peltier device can heat hydrogen cylinder with the reaction heat produced by fuel cell main portion, and temperature exceeds 10 degrees C from external temperature at the time of the electric power supply in summer and higher of 6 degrees C than external temperature during winter. Thus the hydrogen cylinder can be fully heated. Therefore, the entire pressurization hydrogen in hydrogen cylinder can be smoothly supplied to fuel cell main portion irrespective of the change of external temperature. Hence the stable operation of electric power generation of fuel cell main portion is attained for long time. Heat generation of diode is simultaneously exerted in the peltier device lower section through heat sink, thus the overcooling of peltier device lower section is prevented. Since the voltage drop of the output voltage of the fuel cell main portion at the time of the solenoid valve operation is suppressed, the fuel cell main portion can be operated safely and stably over long time.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of the operational system of the fuel cell. (Drawing includes non-English language text)    Hydrogen cylinder (11)    Hydrogen ejection opening (11a)    Fuel cell main portion (12)    Peltier device (13)    Warm air fan (14)