You know nearly 60 per cent of the energy produced by a gasoline engine is lost as waste heat.
Researchers have invented a new material that will make cars even more efficient, by converting heat wasted through engine exhaust into electricity.
Such materials are called as thermoelectric and they rate the materials’ efficiency based on how much heat they can convert into electricity at a given temperature.
The most efficient material used commercially in thermoelectric power generators was an alloy called sodium-doped lead telluride, which had a rating of 0.71. The new material, thallium-doped lead telluride, has a rating of 1.5.
What’s more important is that the new material is most effective between 450 and 950 degrees Fahrenheit — a typical temperature range for power systems.
Only about 25 percent of the energy produced by a typical gasoline engine is used to move a car or power its accessories, and nearly 60 percent is lost as waste heat which escapes in engine exhaust.
A thermoelectric (TE) device can capture some of that waste heat and the material takes care of all the work.
It produces electrical power just like conventional heat engines like steam engines that are coupled to electrical generators.
Such a device is of immense use in our country and the automobile exhaust can be used to produce sufficient watts of electricity.
2 comments:
hey actually i have thot of this tech long before but since i was not tht brainy i didnt show any intrest.. good technology using the wasted energy as the source for producing another energy ... if u see most of the mechanical and electric components give out heat energy this heat energy if used properly can be used to energise other devices or to improve the performance of tht device itself....
good site there and i like our fictures.
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