Hydrogen fuel cell cooling

A system for cooling of a radiator of a hydrogen fuel cell stack comprising:

• a vaporizer;
• a radiator configured to cool a cooling fluid in a coolant system of the hydrogen fuel cell stack;
• a spray supply system comprising:
• a tank;
• a pump configured to pump water from the tank;
• a nozzle system;
• and
• a condensate tray configured to collect condensate and return the condensate to the tank;
• and
• a controller, the controller comprising a processor and a memory storing one or more processor readable instructions that cause the system to:
• activate the pump to spray the condensate collected in the tank to cool the radiator based on a temperature of the cooling fluid.

A method of cooling of a fuel cell stack radiator comprising:

• measuring an ambient temperature and determining a temperature difference between the ambient temperature and a stored temperature value;
• measuring a temperature of a cooling fluid at an outlet of a radiator of a fuel cell stack;
• activating a pump to provide condensate spray through a nozzle system based on the measured temperature being above a threshold value, wherein
• the pump is configured to pump liquid from a tank that has been collected as condensate from a vaporizer configured to evaporate liquid hydrogen to provide hydrogen gas to the fuel cell stack.