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 ...

and 4–9 percent

hydrogen Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter ...

by energy. It may be used as a

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

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 comb ...

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 (

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...

) Thousand palms and Barstow,

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

Fort Collins A fortification (also called a fort, fortress, fastness, or stronghold) is a military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from La ...

Colorado Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...

(all US),

Chongqing ChongqingPostal Romanization, Previously romanized as Chungking ();. is a direct-administered municipality in Southwestern China. Chongqing is one of the four direct-administered municipalities under the State Council of the People's Republi ...

and

Shanxi Shanxi; Chinese postal romanization, formerly romanised as Shansi is a Provinces of China, province in North China. Its capital and largest city of the province is Taiyuan, while its next most populated prefecture-level cities are Changzhi a ...

(

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

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, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

Islamabad Islamabad (; , ; ) is the capital city of Pakistan. It is the country's tenth-most populous city with a population of over 1.1 million and is federally administered by the Pakistani government as part of the Islamabad Capital Territory. Bu ...

(

Pakistan Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country# ...

Dunkerque Dunkirk ( ; ; ; Picard language, Picard: ''Dunkèke''; ; or ) is a major port city in the Departments of France, department of Nord (French department), Nord in northern France. It lies from the Belgium, Belgian border. It has the third-larg ...

(

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

Gothenburg Gothenburg ( ; ) is the List of urban areas in Sweden by population, second-largest city in Sweden, after the capital Stockholm, and the fifth-largest in the Nordic countries. Situated by the Kattegat on the west coast of Sweden, it is the gub ...

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...

(

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

Emilia-Romagna Emilia-Romagna (, , both , ; or ; ) is an Regions of Italy, administrative region of northern Italy, comprising the historical regions of Emilia (region), Emilia and Romagna. Its capital is Bologna. It has an area of , and a population of 4.4 m ...

Lombardia The Lombardy Region (; ) is an administrative regions of Italy, region of Italy that covers ; it is located in northern Italy and has a population of about 10 million people, constituting more than one-sixth of Italy's population. Lombardy is ...

(

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

Dwarka Dwarka () is a town and municipality of Devbhumi Dwarka district in the States and union territories of India, Indian state of Gujarat. It is located on the western shore of the Okhamandal Peninsula on the right bank of the Gomti river at ...

and

Faridabad Faridabad () is the most populous List of cities in Haryana by population, city near NCT of Delhi in the Indian state of Haryana and a part of National Capital Region (India), Delhi National Capital Region. It is one of the major satellite citie ...

(

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, but spread chiefly to the west, or beyond its Bank (geography ...

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

and the BC hydrogen highway in Canada. HCNG for mobile use is premixed at the

hydrogen station A hydrogen infrastructure is the infrastructure of points of hydrogen production, truck and pipeline transport, and hydrogen stations for the distribution and sale of hydrogen fuel, and thus a crucial prerequisite before a successful commerciali ...

Research

In the town of Nes on the island of

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

in the

Netherlands , Terminology of the Low Countries, informally Holland, is a country in Northwestern Europe, with Caribbean Netherlands, overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Nether ...

, 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

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 a U.S.-based international nonprofit organization devoted to eliminating death, injury, property damage, and economic loss due to fire, electrical, and related hazards. , the NFPA claims to have 5 ...

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