Environmental Engineering Reference
In-Depth Information
Hydrogen looks an attractive option for air transport. The high energy
density achieved with hydrogen with respect to on board weight is a real
asset, in addition to its environmental qualities. Still, its usewill be difficult
to implement, as it requires a completely new design of the aircraft.
Besides the difficulties linked to the production and distribution of liquid
hydrogen, the aircraft itself will have to accommodate much bigger
reservoirs. Nevertheless, if safety can be ensured in a satisfactory way,
this option has to be seriously considered as in the longer term, there is
no other serious alternative, apart from a stringent limitation on air travel
and transport, which cannot be completely discarded.
It is necessary to facilitate the progressive introduction of future
solutions which can be anticipated now. Hybrid and flexible technologies
are well adapted for the transition period, as they can help to operate the
changes which will be necessary during this period.
A new lifestyle
As already stressed, the present situation requires a thorough transforma-
tion of our economic model. In order to perform such a transformation
under acceptable conditions, innovating technologies are needed. New
pathways have to be explored, opening a wide field of investigation for
research.
Technological progress alone is not enough. The changes brought by
technology have to be used within a more general framework, involving
an evolution in the way of life and mentalities.
Such a project requires the right policy and governance on a worldwide
scale.
It is only by inventing new solutions for improving the quality of life
while reducing energy consumption, that it will be possible to get
the support of public opinion. Any pollution, chemical, acoustic or
even visual threatens the quality of life. Looking for a harmonious and
healthy setting is a concern of growing importance for everybody. Well
developed countries have to show how to improve the quality of the
environment and implement sustainable solutions. Emerging countries
will thus be encouraged to adopt such a new paradigm, rather than
undergo all the development stages that have been followed by the richer
countries.
What happens now will be decisive for the years 2030-2050. A strong
political will is essential for adopting the appropriate legislation and
framework required to implement the changes which are needed.
Search WWH ::




Custom Search