COMPARISON Comparison 1: Vehicle Design: maglev is similar to



Comparison 1: Vehicle
Design: maglev is similar to other transport technology, but the implementation
varies considerably according to the application. Choice of vehicle, weight,
shape and length dominate transport system design. There are 3 key issues that
affect the EI of a transport system and are primarily determined by vehicle
design. 1: For high speed travel the dominant energy usage is to overcome
aerodynamic drag. For constant speed travel EI is proportional to drag force
per passenger with 3.6 N/Pasc= 3.6J/Ps-m=1 wh/pas-km. Airplanes do much better
than it is possible for ground transportation because of lesser pressure at
greater (12,000 m) height. 2: For low-speed travel the dominant energy loss is
due to the need to supply kinetic energy to change vehicle’s speed and this is
lost when brakes are applied.

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3: Suspension and
propulsion losses are always significant. Not only is there a direct loss such
as wheel hysteresis and bearing friction but at high speed aerodynamic loss
become more than direct losses. With these facts in mind, consider the design
aspect of the weight, shape and length. Weight: All transport technology has
been moving in the direction of reducing vehicle weight, and using regenerative
braking. there are two E maglev designs, a low speed designated M3, for
urban application and high speed version, designated M3+, for competition with
HSR. Shape: shape is important because it affect aerodynamic loss and noise,
both external and internal. Even low speed vehicle should have modest
streamlining and high speed vehicle need more extreme shapes. Japanese Fastech
360 train designed for 360km/h, Trans rapid TR09 designed for 350-500 km/h. the
nose section is very important for high speed, particularly for vehicles
entering existing tunnels. For HSR the main aerodynamic drag is on the body,
wheels and pantograph. Well designed maglev vehicle have less drag and are
quieter than modern high speed trains, even when going substantially faster.
Length: Vehicle length is a critical parameter. The frontal area is constrained
by the assumed need to provide height for standing head room and width for at
least four abreast sitting with reasonable comfort. With maglev the frontal can
be less than for conventional trains because the suspension has less frontal
area and there is no pantograph. The minimum length is determined by passenger
carrying ability.


Comparison 2: Fuel
Efficiency ·
Unlike the previous forms of transportation, Maglev trains run on electricity
rather than fossil fuels. Electricity is a renewable source of energy and can
be created in several different ways including nuclear, hydro and solar plants.
Fossil fuels are non-renewable sources of energy. They must be burnt, releasing
carbon emission in the atmosphere in order to produce energy · Travelling at a speed of
300 mph and 150 mph. Maglev trains use 0.4 mega joules and 0.1 mega joules per
passenger mile respectively. An automobile travelling at a speed of 60 mph with
20-mpg fuel efficiency uses 4 mega joules per passenger per mile. Using these
numbers, Maglev trains moving at half this speed attains efficiency 40 times
greater than that of an automobile. ·
Comparison 3: speed and cost ·
When commuting in a car one’s average arrival time can be hard to calculate due
to traffic and driving conditions. Everyone has been struck in


traffic. Unannounced
construction, gaper delays, sometimes nothing at all can create massive delays
on the roadway. · Car
also requires much maintenance. Automobiles must meet state standards in order
to be legal for the roads and all cars must be insured. This constant
maintenance and legal coverage becomes very costly for any common citizen. · Planes as well experience
delays. Prime weather and air traffic condition are essential in insuring
passenger a safe flight. However, when these criteria are not made, delays
occur. · In
life, just as in driving, there is no way to predict what will happen in
future. What we can do is to put the odds in our favour is to minimize risk.
That’s where maglev train come into play. Maglev trains have a dedicated
infrastructure solely for the train itself. No other vehicles are compatible
with their magnetic guide ways and so no other vehicles travel on it. This
means no traffic and no collisions. Weather conditions have little to no effect
on maglev trains except under severe conditions. So a train can travel even
when the weather is subpar. In an automobile or conventional locomotive wet
conditions decreases friction between the vehicle and ground. This increases
stopping time and the probability that a vehicle may slip. The magnetic forces
at hand are unaffected by such condition. Since no contact is made between the
maglev train and the railway. Less wear is put on each. This means less
maintenance. Less maintenance creates fewer delays while allowing lower ticket