Abstract: The present invention aims at dissolving hydrogen gas in a liquid and maintaining the solubility of the hydrogen gas in the liquid at a high state. A sealing bag 1 that dissolves hydrogen gas in a liquid by being put into the liquid includes a hydrogen permeable film that can permeate hydrogen gas that is sealed and filled in the sealing bag to outside. By sinking this sealing bag 1 into the liquid in advance, the hydrogen gas that is permeated through the hydrogen permeable film is dissolved in the liquid. Furthermore, since the hydrogen gas is continuously permeated little by little through the hydrogen permeable film, the solubility of the hydrogen in the liquid can be maintained at a high state.

Abstract: A fuel mixing apparatus for fuel cell system includes a first fluid tank, a second fluid tank, a tube assembly, a pump, and a mixing tank. The first fluid tank is for containing a first fluid. The second fluid tank is for containing a second fluid. The tube assembly connects to the first fluid tank and the second fluid tank. The pump is disposed on the tube assembly. The mixing tank is connected to the tube assembly. The pump transmits the first fluid in the first fluid tank to the mixing tank via the tube assembly, and the pump transmits the second fluid tank to the mixing tank via the tube assembly.

Abstract: A fuel cell power generating system has a fuel cell module which can generate electricity when oxygen and hydrogen are supplied to the fuel cell module and have a reaction therein. A cooling subsystem provides coolant to flow through the fuel cell module to take heat away therefrom. Heat in the coolant is used to heat at least one of fluid for heating and humidifying air before the air enters the fuel cell module and fluid for heating and humidifying the hydrogen before the hydrogen enters the fuel cell module.