IIT-Delhi biogas passenger car with fuel mileage of 24.11 km/kg
IIT-D has received a patent for this product which was developed by Biogas Development and Training Centre, Centre for Rural Development and Technology and has received the backing from the Ministry of New and Renewable Energy.
Rapid industrialization and population increase results in huge amounts of waste, and waste management can prove to be a solution. Installation of medium (85-1000 m3/d) to large-size (>1000 m3/d) biogas plants in India acts as a renewable energy source that aids in a clean and sustainable environment. Ministry of New and Renewable Energy (MNRE), National Biogas and Manure Management Program, and Biogas Fertilizer Plants all work towards these causes.
Biogas typically consists of methane (50-70 %), carbon dioxide (30-45 %), traces of water vapor and hydrogen sulfide (H2S), and has a heating value of 20-24 MJ. As compressing it and storing it in containers is difficult in this form, raw biogas has to be upgraded to natural gas quality for use in vehicles designed to use natural gas. This means carbon dioxide (CO2), hydrogen sulphide (H2S), ammonia, particles and water (and sometimes other trace compounds) have to be removed so that the product gas for vehicle use has a methane content of more than 90% by volume. This upgraded gas, Biomethane is bottled at discharge pressure of 200 bar. Using a CNG dispensing cable and a nozzle to NZS standards, Compressed Biogas (CBG) can be used to fill gas into vehicles. The new biogas standard BIS:16087(2013) has been developed by Bureau of Indian Standards for use in vehicles
At Indian Institute of Technology, Delhi, a regular CNG car has been tested on CBG for more than 15,000km. Their results show an existing CNG vehicle need not undergo any modifications to be compatible to CBG as a fuel. Fuel economy and mass emission of the Compressed Biogas (CBG) car with 93% CH4 and Compressed Natural Gas (CNG) were evaluated. Emissions such as CO, HC and NOx were found to be marginally higher with CNG than CBG when meeting BS IV Norms. Mileage stood at CBG (24.11 km/kg) as compared to CNG (24.38 km/kg).
CRDT, IIT Delhi
Coordinator, Biogas Development & Training Centre (BDTC)
Treasurer, Faculty Forum, IIT Delhi
General Secretary, Biogas Forum – India (BiGFIN)
Indian Coordinator, Sustainable Energy Environment (SEE) Forum
[Network in Asian Countries, Headquarter: Kyoto University, Japan]
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