News tagged with heat energy
Turning heat to electricity... efficiently
(PhysOrg.com) -- In everything from computer processor chips to car engines to electric powerplants, the need to get rid of excess heat creates a major source of inefficiency. But new research points the way ...
Nov 18, 2009 |
4.8 / 5 (67) |
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Maxwell's demon demonstration turns information into energy
(PhysOrg.com) -- Scientists in Japan are the first to have succeeded in converting information into free energy in an experiment that verifies the "Maxwell demon" thought experiment devised in 1867.
Nov 15, 2010 |
4.6 / 5 (47) |
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Explained: The Carnot Limit
Anytime engineers try to design a new kind of heat-based engine or improve on an existing design, they bump up against a fundamental efficiency limit: the Carnot Limit.
May 19, 2010 |
4.7 / 5 (32) |
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Solar power generation around the clock
(PhysOrg.com) -- A Californian company, SolarReserve, is developing a solar power system that can store seven hours' worth of solar energy by focusing mirrors onto millions of gallons of molten salt, allowing ...
Technology / Energy & Green Tech
Nov 05, 2009 |
4.5 / 5 (31) |
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Tiny heat engine may be world's smallest
(PhysOrg.com) -- Steam engines, combustion engines, and diesel engines are all different types of heat engines, which operate by converting heat energy into mechanical work. Although heat engines have existed ...
Feb 02, 2011 |
4.7 / 5 (29) |
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Controversial energy-generating system lacking credibility (w/ video)
(PhysOrg.com) -- It's been seven months since Italian physicists Andrea Rossi and Sergio Focardi publicly demonstrated a device that they claimed could generate large amounts of excess heat through some kind of low-energy ...
Aug 11, 2011 |
4 / 5 (29) |
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Researcher Uses Graphene Quilts to Keep Things Cool
(PhysOrg.com) -- University of California, Riverside Professor of Electrical Engineering and Chair of Materials Science and Engineering Alexander Balandin is leading several projects to explore ways to use ...
Nanotechnology / Nanomaterials
Dec 21, 2009 |
4.8 / 5 (22) |
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US energy use chart shows we waste more than half of our energy
(PhysOrg.com) -- This flow chart of the estimated US energy use in 2009, assembled by the Lawrence Livermore National Laboratory (LLNL), paints a pretty sobering picture of our energy situation. To begin with, ...
Technology / Energy & Green Tech
Apr 09, 2011 |
3.5 / 5 (27) |
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New materials turn heat into electricity
Most of today's power plants--from some of the largest solar arrays to nuclear energy facilities--rely on the boiling and condensing of water to produce energy.
Technology / Energy & Green Tech
Nov 07, 2011 |
5 / 5 (19) |
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Researchers discover source for generating 'green' electricity
University of Minnesota engineering researchers in the College of Science and Engineering have recently discovered a new alloy material that converts heat directly into electricity. This revolutionary energy conversion method ...
Jun 22, 2011 |
4.8 / 5 (19) |
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'Missing' heat may affect future climate change
Current observational tools cannot account for roughly half of the heat that is believed to have built up on Earth in recent years, according to a "Perspectives" article in this week's issue of Science. Scientists at the ...
Space & Earth / Earth Sciences
Apr 15, 2010 |
3.4 / 5 (24) |
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Shining a light on the elusive 'blackbody' of energy research
A designer metamaterial has shown it can engineer emitted "blackbody" radiation with an efficiency beyond the natural limits imposed by the material's temperature, a team of researchers led by Boston College ...
Jul 22, 2011 |
4.8 / 5 (16) |
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Spherical cows help to dump metabolism law: 3/4-power law is actually 2/3
(PhysOrg.com) -- Apparently, the mysterious "3/4 law of metabolism" -- proposed by Max Kleiber in 1932, printed in biology textbooks for decades, explained theoretically in Science in 1997 and described in a 2000 essay in Nat ...
Feb 03, 2010 |
4.5 / 5 (16) |
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Sound could save circuits: Researchers theorize acoustic waves may cool microelectronics
(PhysOrg.com) -- "Hot sounds" has one meaning to music fans and another to physicists. Count a team of researchers at Rice University among the latter, as they've discovered that acoustic waves traveling along ...
Apr 28, 2010 |
4.8 / 5 (14) |
1
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Start-up company aims to harness the full potential of producing electricity from waste heat
(PhysOrg.com) -- Matt Scullin co-founded Alphabet Energy just one year ago, but already the CEO has ambitions of turning the San Francisco-based start-up company into the "Intel of waste heat." By harnessing ...
Technology / Energy & Green Tech
Sep 02, 2010 |
4.8 / 5 (14) |
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