Efficient Vans: A Best Practice Guide to Cost - Transport Cafe

Efficient Vans: A Best Practice Guide to Cost-effective Van Use
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5.2
Evaluating Cleaner Fuels and
Technologies
It is important that van operators
consider a range of different fuel
types. Therefore, this section
provides an overview of the different
types of fuel that are available, and
their benefits, costs and availability.
Summary of Alternative Fuel Vehicle Performance
Natural Gas
The cleaner fuels and technologies
that are covered include:
• Natural gas
• Liquefied petroleum gas
• Electricity
• Hybrids
• Biofuels
The Fuel
The natural gas used as a vehicle fuel is mostly methane, which is extracted from oil
and gas fields around the world. When stored in a compressed form, it is known as
compressed natural gas (CNG). Alternatively, when held at extremely low temperatures
(about -162°C) it liquefies and is then known as liquefied natural gas (LNG).
Vehicles
Typically available as dual fuel – using diesel and natural gas together, and can be
available as bi-fuel (i.e. using the fuels alternatively within the same engine).
Environment
Can be quieter than diesel, vehicles produce 10-15% less CO 2 and significantly less
other emissions.
Cost
Vehicles are more expensive to buy, but fuel is cheaper. Vehicles are exempt from the
London Congestion Charge.
Refuelling
Limited refuelling points are available at the moment. Operators tend to purchase in
bulk, holding fuel to issue to themselves. However, it is important to understand the
health and safety implication of having onsite fuel tanks.