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Fragen zu Wasserstoff im Heim infographic
Graphic zeigt die Produktion von Wasserstoff für Häuser und potentielle Risiken.
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ENERGY

Fragen zu Wasserstoffgas Versorgung

By Duncan Mil

September 5, 2023 - Eine Küstenstadt im Nordosten von England wird das erste "Wasserstoff Dorf" in UK, statt Erdgas wird kohlenstoff-armer Wasserstoff verwendet und ist so Teil eines Planes zur Erreichung von
Null-Emissionen bis 2050.

The British government wants to phase out natural gas boilers by 2035. The proposal will replace natural gas (methane) with hydrogen as an energy source in residential and commercial buildings -- hydrogen combustion does not produce carbon dioxide, a significant player in global warming.

However, hydrogen, with its much lower ignition point, is inherently less safe than natural gas and produces more harmful nitrogen oxide (NOx) than natural gas. To demonstrate comparable risk, Hy4Heat conducted a quantified risk assessment (QRA), performing 120 tests to establish the relative safety of hydrogen compared to natural gas within a domestic property.

Potential ignition risks include hot surfaces, electrical contacts, and electrical motors.

The QRA, undertaken by Arup, concluded that there will be many more fire and explosion events with 100% hydrogen -- 39 per year compared with nine for natural gas. Furthermore, the overall risk of injury will soar to 65 for hydrogen compared to 17 for natural gas.

HyDeploy, an earlier six-year QRA that started in 2017, injected 20% hydrogen by volume into three live gas networks.

HyDeploy found that current appliances and gas networks can adopt a 20% hydrogen blend without modification. With no exceptions, HyDeploy found every natural gas appliance was safe and leak-tight on 20% hydrogen-blended natural gas.

Sources
PUBLISHED: 05/09/2023; STORY: Graphic News
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