• AKG Green
    Thermal Solutions.
  • AKG Green
    Fuel Cell Cooling System
  • AKG Green
    Fuel Cell Cooling System
  • AKG Green
    Fuel Cell Cooling System

Fuel Cell Cooling System

AKG’s lightweight and high performance heat exchangers deliver excellent cooling and heating performance for direct or indirect thermal management of fuel cell applications. To meet the conductivity requirements, our heat exchangers can be vacuum brazed and de-ionized. The special de-ionization process can also be used for further brazing options to meet the conductivity requirements.

A fuel cell converts hydrogen and charge air into electric energy with air and water as exhaust. It needs to be cooled with a low conductive coolant to prevent short circuits. Vacuum brazed and de-ionized heat exchangers are well suited for operation with low conductive coolant.

Fuel Cell Indirect Cooling

In indirect cooling, there are two separate coolant circuits – regular coolant and low conductive coolant. The low conductive coolant circulates between the fuel cell and a liquid-to-liquid heat exchanger (stacked shell cooler) where the low conductive coolant is cooled by a regular coolant.  The regular coolant circulates through the stacked shell cooler, followed by charge air cooler, hydrogen pre-heater. The coolant is finally cooled by the ambient cooler and the cycle repeats.

AKG Product portfolio for Fuel Cell cooling

  • Stacked Shell Cooler
  • LightWeight Cooler
  • Compact Cooler
  • Cold plate

Benefits of indirect cooling compared to direct cooling

  • Reduced volume of expensive low conductive coolant is needed
  • Less ions are emitted resulting in reduced change interval for ion exchanger
  • Components of the coolant circuit can be produced with less requirements complying with electrical conductivity
  • Low conductive coolant cooler can be smaller as the heat exchange is against water
  • Micro particles are reduced as the circuit is smaller in size

Fuel Cell Direct Cooling

In direct cooling, the fuel cell stack is cooled by a low conductive coolant that circulates directly through all the heat exchangers in the system. The low conductive coolant is passed into the fuel cell stack, followed by charge air cooler and hydrogen pre-heater. The coolant is finally cooled by an ambient cooler and the cycle repeats.

AKG Product portfolio for Fuel Cell cooling

  • LightWeight Cooler
  • Compact Cooler
  • Cold plate

Get in touch

AKG Thermotechnik International
GmbH & Co. KG

Am Hohlen Weg 31
D-34369 Hofgeismar • Germany
Phone: +49 (0) 5671 - 8 83-0
Email: akggreen@akg-group.com

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