HCNG or H2CNG (hydrogen compressed natural gas) is a mixture of

compressed natural gas Compressed natural gas (CNG) is a fuel gas mainly composed of methane (CH4), compressed to less than 1% of the volume it occupies at standard atmospheric pressure. It is stored and distributed in hard containers at a pressure of , usually in cy ...

and 4–9 percent

hydrogen Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. At standard conditions hydrogen is a gas of diatomic molecules having the formula . It is colorless, odorless, tasteless, non-toxic, an ...

by energy. It may be used as a

fuel gas Fuel gas is any one of a number of fuels that under ordinary conditions are gaseous. Most fuel gases are composed of hydrocarbons (such as methane or propane), hydrogen, carbon monoxide, or mixtures thereof. Such gases are sources energy t ...

for

internal combustion engine An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combus ...

s and home appliances. (regarding the acronyms in the above emissions chart: AVL = Average Levels?
CNG = Compressed Natural Gas
HCNG = Hydrogen and CNG blend
NO_X = Nitrogen Oxides
NMHC = Non-Methane Hydrocarbons?
CH₄ = Methane
THC = Total Hydrocarbons?
CO = Carbon Monoxide)

HCNG dispenser An HCNG dispenser is a type of fuel dispenser at a filling station that is used to pump HCNG into vehicles. Principle An HCNG dispenser is in general combined with a CNG dispenser for natural gas vehicles as both use the same feed stream from the ...

s can be found at

Hynor The HyNor-project was a nationally supported project which purpose was to facilitate and coordinate the introduction of hydrogen as a fuel in Norway, running from 2003 to 2012. Toward the commercial introduction of hydrogen vehicles in 2015, the H ...

(

Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and t ...

) Thousand palms and Barstow,

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

Fort Collins A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ...

Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of t ...

(all US),

Chongqing Chongqing ( or ; ; Sichuanese dialects, Sichuanese pronunciation: , Standard Mandarin pronunciation: ), Postal Romanization, alternately romanized as Chungking (), is a Direct-administered municipalities of China, municipality in Southwes ...

and

Shanxi Shanxi (; ; formerly romanised as Shansi) is a landlocked province of the People's Republic of China and is part of the North China region. The capital and largest city of the province is Taiyuan, while its next most populated prefecture-lev ...

(

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

Pico Truncado Pico Truncado is a town and municipality in Santa Cruz Province in southern Argentina. In 1921, the village's railway station was the site of one of the few open engagements between the Argentine Army and anarchist strikers at the time of the e ...

(

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

Islamabad Islamabad (; ur, , ) is the capital city of Pakistan. It is the country's ninth-most populous city, with a population of over 1.2 million people, and is federally administered by the Pakistani government as part of the Islamabad Capital T ...

(

Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...

), Dunkerque (

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

Gothenburg Gothenburg (; abbreviated Gbg; sv, Göteborg ) is the second-largest city in Sweden, fifth-largest in the Nordic countries, and capital of the Västra Götaland County. It is situated by the Kattegat, on the west coast of Sweden, and has ...

Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...

Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...

(

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

Emilia-Romagna egl, Emigliàn (man) egl, Emiglièna (woman) rgn, Rumagnòl (man) rgn, Rumagnòla (woman) it, Emiliano (man) it, Emiliana (woman) or it, Romagnolo (man) it, Romagnola (woman) , population_note = , population_blank1_title ...

Lombardia (man), (woman) lmo, lumbard, links=no (man), (woman) , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = , demographics1_footnotes = , demographics1_title1 = , ...

(

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

Dwarka Dwarka () is a city and a municipality of Devbhumi Dwarka district in the state of Gujarat in Western India. It is located on the western shore of the Okhamandal Peninsula on the right bank of the Gomti river at the mouth of the Gulf of Kut ...

and

Faridabad Faridabad is the most populous city in the Indian state of Haryana and a part of Delhi National Capital Region. It is one of the major satellite cities around Delhi and is located 284 kilometres south of the state capital Chandigarh. The ri ...

(

Delhi Delhi, officially the National Capital Territory (NCT) of Delhi, is a city and a union territory of India containing New Delhi, the capital of India. Straddling the Yamuna river, primarily its western or right bank, Delhi shares borders w ...

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

and the

BC hydrogen highway The BC Hydrogen Highway was a planned hydrogen highway that was supposed to link Vancouver and Whistler with seven hydrogen fueling stations. On March 13, 2007, Canadian Prime Minister Stephen Harper announced funding of almost $200 million Canadi ...

in Canada. HCNG for mobile use is premixed at the

hydrogen station A hydrogen station is a storage or filling station for Hydrogen. The hydrogen is dispensed by weight. There are two filling pressures in common use. H70 or 700 bar, and the older standard H35 or 350 bar. As of 2021 around 550 filling stations were ...

Research

In the town of Nes on the island of

Ameland Ameland (; West Frisian: It Amelân) is a municipality and one of the West Frisian Islands off the north coast of the Netherlands. It consists mostly of sand dunes. It is the third major island of the West Frisians. It neighbours islands Ter ...

in the

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

, 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 boiler Condensing boilers are water heaters typically used for heating systems that are fueled by gas or oil. When operated in the correct circumstances, a heating system can achieve high efficiency (greater than 90% on the higher heating value) by cond ...

s, and micro-CHP boilers. The use of existing natural gas pipelines for HCNG was studied by NaturalHy. To get the most out of an

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.

Codes and standards

The

National Fire Protection Association The National Fire Protection Association (NFPA) is an international nonprofit organization devoted to eliminating death, injury, property and economic loss due to fire, electrical and related hazards. As of 2018, the NFPA claims to have 50,000 mem ...

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.

References

External links

Hydrogen-Compressed Natural Gas (HCNG) Transport FuelHydrogen – Natural gas (HCNG) mixtures as fuels in internal combustion engines
{{DEFAULTSORT:Hcng Fuel gas Hydrogen technologies

Research

Codes and standards

See also

References

External links