HCNG or H2CNG (hydrogen compressed natural gas) is a mixture of compressed natural gas and 4–9 percent hydrogen by energy.International hydrogen fuel and pressure vessel forum 2010 It may be used as a fuel gas for internal combustion enginesTest of blends of hydrogen and natural gas in a light-duty vehicleDevelopment of HCNG blended fuel engine with control of NOx emissionsHydrogen enriched compressed natural gas and home appliances.
(regarding the acronyms in the above emissions chart:
AVL = Average Levels? CNG = Compressed Natural Gas HCNG = Hydrogen and CNG blend NOX = Nitrogen Oxides NMHC = Non-Methane Hydrocarbons? CH4 = Methane THC = Total Hydrocarbons? CO = Carbon Monoxide)
HCNG dispensers can be found at Hynor (Norway) Thousand palms and Barstow,Hydrogen-enhanced natural gas vehicle program California, Fort Collins, Colorado (all US), ChongqingChongqing Wuzhoulong Works with Tsinghua University for HCNG Buses and Shanxi (China),HCNG in ChinaSxgxny (Shanxi) Pico Truncado (Argentina),Argentina’s first HCNG patrol car Islamabad (Pakistan),Prime Minister Syed Yousaf Raza Gillani supports non-stop CNG loading in Pakistan PM dedicate three gas fields for CNG Industry, HCNG to import immediately with zero import duty Dunkerque (France),ALT-HY-TUDE Project Gothenburg Sweden, Rio de JaneiroPetrobras and the infrastructure for hydrogen supply in Brazil (Brazil), Emilia-Romagna,Hydrogen-methanemixtures: vehicle tests performed by ENEA mhybus LombardiaRegione Lombardia: 10 hydromethane PandasItalian highway presents first prototype of hydrogen-methane Iveco Ecodaily (Italy), Dwarka and Faridabad (Delhi), IndiaSuccessful adoption of CNG and emerging CNG-H2 program in IndiaAutomotive research body develops greener fuel engine for light vehiclesHydrogen–CNG Fuel To Debut During Games 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.Pilot project on hydrogen injection in natural gas on island of Ameland The appliances involved were kitchen stoves, condensing boilers, and micro-CHP boilers.Ameland Field testing
The use of existing natural gas pipelines for HCNG was studied by NaturalHy.Using the existing natural gas system for hydrogen
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.A study on quasi-dimensional combustion model of a spark ignition HCNG engine suitable for various hydrogen fractions (SAE 2008)High-percentage hydrogen/cng blend Ford F-150 operating summary The hydrogen in the blend leads to lower CO2 emissions.
Codes and standards The National Fire Protection Association 52 presently covers CNG and hydrogen fueling stations. Blends with < 20% hydrogen by volume are treated identically to CNG. For the use of blends with more than 30-40 % of hydrogen in volume decision support toolsDecision Support Tool for the design are used to ensure safe use.
See also HCNG dispenser Hydrogen infrastructure Hydrogen economy
References
External links Hydrogen-Compressed Natural Gas (HCNG) Transport Fuel Hydrogen – Natural gas (HCNG) mixtures as fuels in internal combustion engines