Minor differences include different components such as a hydrogen-ready flame detector and burner. One of the hot gases produced in the combustion process is water vapour (steam), which arises from burning the hydrogen content of the fuel. A hydrogen Fuel cell Boiler is a home unit that utilizes this waste heat for hot water and heating, while also generating electricity for the home. So they are moving as fast as they can to persuade us about hydrogen,” he says. Principles of work. In a conventional boiler, fuel is burned and the hot gases produced pass through a heat exchanger where much of their heat is transferred to water, thus raising the water's temperature. You may have heard of hydrogen powered cars or fuel cell CHP boilers, they are relatively new products, but how exactly do they work? Currently they are cheaper to run than oil boilers, much cheaper to run than electric space heaters, and on a par with natural gas boilers. How does a hydrogen fuel cell work? The internal components would be very similar to present day gas boilers too. This can be done through a process called steam reforming, but this method produces carbon dioxide, the very thing we are trying to avoid. Converting hydrogen-ready boilers from natural gas to hydrogen is designed to be simple. How do hydrogen boilers work? Hydrogen has a higher flame speed than natural gas, so a different burner is required. The UK’s Worcester Bosch, a part of Robert Bosch GmbH, and BDR Thermea Group are at the forefronts of developing such boilers. When the hydrogen comes in to contact with oxygen it also generates heat and water as a byproduct. And it all comes down to how the gas is produced. One of the key technical advances in hydrogen boilers are burners that can hold a stable hydrogen flame against its high speed. In this blog we put the hydrogen fuel cell that powers them under the microscope. Hydrogen-powered boilers are also called ‘hybrid boilers’ as they are compatible with natural gas and 100% pure hydrogen. Fuel cells are the green option. Although hydrogen is abundant in water, the hydrogen atom which is used to make electricity must be produced. Instead, hydrogen is produced from the source fuel – natural gas – as needed and only in the required quantity. Hydrogen is not found on Earth in a pure state. The risk of an explosion involving hydrogen is generally low – especially where the Vitovalor is concerned, since there is no fuel store as is the case with conventional boilers. There are many reasons why hydrogen boilers would be a suitable option, not least that they look and work like the gas boilers most householders already have and are directly compatible with their current central heating systems. A hydrogen boiler, in theory, can fit into a current boiler’s physical space in the home without much disruption to the homeowner. 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