Abstract: Provided is a fuel cell hybrid system. The fuel cell hybrid system includes a heat engine including a compression unit for compressing an oxidizer supply gas including air and an expansion unit for expanding the oxidizer supply gas to generate mechanical energy, a fuel cell including an anode for receiving a fuel gas, a cathode for receiving the oxidizer supply gas, and a catalytic combustor for burning a non-reaction fuel gas of an anode exhaust gas exhausted from the anode to heat the oxidizer supply gas, a first heat exchanger heat-exchanging the oxidizer supply gas discharged from the compression unit with a cathode exhaust gas exhausted from the cathode, and a second heat exchanger heat-exchanging the oxidizer supply gas discharged from the first heat exchanger with the oxidizer supply gas discharged from the catalytic combustor.

Abstract: Provided is a fuel cell hybrid system. The fuel cell hybrid system includes a heat engine including a compression unit for compressing an oxidizer supply gas including air and an expansion unit for expanding the oxidizer supply gas to generate mechanical energy, a fuel cell including an anode for receiving a fuel gas, a cathode for receiving the oxidizer supply gas, and a catalytic combustor for burning a non-reaction fuel gas of an anode exhaust gas exhausted from the anode to heat the oxidizer supply gas, a first heat exchanger heat-exchanging the oxidizer supply gas discharged from the compression unit with a cathode exhaust gas exhausted from the cathode, and a second heat exchanger heat-exchanging the oxidizer supply gas discharged from the first heat exchanger with the oxidizer supply gas discharged from the catalytic combustor.