NOVELTY - Cooling system for fuel cell vehicle comprises a stack radiator (R1); an electric drivetrain radiator (R2) disposed in series at a side of the stack radiator; an air-con condenser (C) disposed in front of the stack radiator to cover the stack radiator, and not the electric drivetrain radiator; and cooling fans (FN) disposed behind the stack radiator and the electric drivetrain radiator, which are disposed in series.    USE - Cooling system for fuel cell vehicle.    ADVANTAGE - The system ensures appropriate and efficient cooling performance for a stack radiator cooling a stack of the fuel cell and an electric drivetrain radiator cooling an electric drivetrain; and can be achieved by a relatively simple configuration and assembly process. Since electric drivetrain radiator is lower in operational temperature than the stack radiator, the cooling air that has cooled the air-con condenser having relatively high operation temperature flows to stack radiator to cool it, not the electric drivetrain radiator. Thus, electric drivetrain radiator is directly cooled by the external air, such that it is possible to achieve more efficient cooling. The stack radiator has the operational temperature higher than air-con condenser, such that it is appropriately cooled by the cooling air having cooled air-con condenser. Thus, it does not need to prepare a specific cooling fan and space for air-con condenser. According to the arrangement of stack radiator, electric drivetrain radiator, and air-con condenser, air flow resistance is reduced, compared with when all of them overlap, such that it can be expected that the cooling efficiency is improved by increase in velocity of the cooling air. Since the integral radiator fame has an integral structure, as compared with when stack radiator and electric drivetrain radiator are separately formed, it is possible to reduce the number of parts and manufacturing and assembling processes, and easily manipulate the frame. Thus, it is possible to reduce the manufacturing cost and the weight. A specific assembly space is not required between the radiators, such that it is possible to increase the size of heat-dissipating cores, using the space, and improve the heat-dissipating performance.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a cooling system for fuel cell vehicle comprising integral radiator frame for arranging a stack radiator (R1) and an electric drivetrain radiator (R2) in series in one plane.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic top view of cooling system.    Air-con condenser (C)    Cooling fans (FN)    Stack radiator (R1)    Electric drivetrain radiator (R2)