משימה 2:
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Jernhusen, a real estate
company in Stockholm, has found a way to channel the body heat from the hordes
of commuters passing through Stockholm's Central Station to warm another
building that is just across the road.
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"There are about
250,000 people a day who pass through Stockholm Central Station. They in
themselves generate a bit of heat. But they also do a lot of activities. They
buy food, they buy drinks, they buy newspapers and they buy books.
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Heat exchangers in the
Central Station's ventilation system convert the excess body heat into hot
water.
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Not only is the system
environmentally friendly but it also lowers the energy costs of the office block
by as much as 25%.
·
Depending on the level of
activity, the human body generates about 60 to 100 Watts of energy in the form
of heat, about the same amount of heat given off by the average light bulb. All
day, every day, the body is switched on
·
. About 250,000 human …. giving off enough heat to raise the
temperature of the cavernous building to a constant 22-25 degrees Celsius
(71-77 degrees Fahrenheit(
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This concept has been
applied elsewhere. The largest shopping mall in the world, the Mall of America
in Minnesota, does not have a central heating system, despite the region’s
freezing winters. It relies on the body heat of busy shoppers, along with
sunlight and superior insulation
·
Body heat is a biproduct of
the digestion process that powers our bodies, and this body heat is an abundant
free and clean source of energy. Subway riders in Paris will now be
contributing theirs to a very worthy cause, heating a housing project near a
subway station at rue Beaubourg in the center of the city, according to Planet
Ark.
·
in the city of Rotterdam,
in the Netherlands, Club "WATT" was outfitted with a dance floor that
harnesses energy from people’s movements to power the sound system and lights
