The production of hydrogen through electrolysis not only produces green hydrogen – but also waste heat, which has often remained unused to date. However, it is precisely this heat that offers potential to usefully supplement existing district heating networks.
The IEA DHC project HY2HEAT demonstrates how this can be achieved:
Using suitable technical concepts – whether direct integration or with heat pumps – waste heat from electrolysis can be utilised in a climate-friendly way. This brings ecological and economic benefits:
- Lower CO₂ emissions
- Improved energy efficiency
- Reduced heat and hydrogen production costs
More information and concrete figures can be found in an article and case study in the current Euroheat & Power magazine by Stefan Puschnigg, Davide Tommasini, Nicolas Marx and Hesham Ali.
Image: Euroheat & Power Magazine, page 11