HCNG
HCNG (or H2CNG) is a mixture of compressed natural gas and 4–9 percent hydrogen by energy. It may be used as a fuel gas for internal combustion engines and home appliances. HCNG dispensers can be found at Hynor (Norway) Thousand palms and BarstowCalifornia Fort Collins Colorado, Chongqing and Shanxi (China),Pico Truncado (Argentina),Islamabad (Pakistan),Dunkerque (France),Gothenburg Sweden, Rio de Janeiro (Brazil), Emilia-Romagna,Lombardia (Italy), Dwarka and Faridabad (Delhi), India and the BC hydrogen highway in Canada.
HCNG for mobile use is premixed at the hydrogen station.
Research
In the town of Nes on the island of Ameland in the Netherlands, a four-year (2008-2011) field test was carried out where 20% hydrogen was added to the local distribution net supplying a complex of 14 apartments. The appliances involved were kitchen stoves, condensing boilers, and micro-CHP boilers.
The use of existing natural gas pipelines for HCNG was studied by NaturalHy.
To get the most out of an internal combustion engine in transportation if higher levels of hydrogen are added, modifications have to be made to the engine and the control strategy. The hydrogen in the blend leads to lower CO2 emissions.
