The logical implication of this cost-benefit calculus is that solar energy should receive considerably less support from environmental advocates than more mundane technologies like combined heat-and-power or district energy.
Among the energy-saving options, two promising technology switches are the electrification of transportation (electric vehicles can be about four times as energy-efficient as standard fossil-fuel vehicles) and the use of electric-powered heat pumps to deliver winter heating and hot water (heat pumps can be four times as energy-efficient as standard heaters).
Secondly, when considering end-to-end efficiency, it is much less energy-intensive to heat water by direct use of natural gas on-site, rather than by using that natural gas to first make electricity that is used to heat water because of the large conversion losses at power plants.
That means that low-temperature waste heat can be used to produce high-quality chemical energy hydrogen for the first time.
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McDonald was also the third physician in the world to perform a procedure called conductive keratoplasty -- a noninvasive surgery for farsightedness that involves using radio-frequency energy to heat small spots around the cornea.
On another day of energy-sapping heat, Shafiul was initially shielded from the strike by Naeem but he quickly outscored his partner, backing away to hit fluently through the offside for successive boundaries to bring up the 350.
Celsion is dedicated to the development and commercialization of oncology drugs including tumor-targeting treatments using focused heat energy in combination with heat activated drug delivery systems.
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Produces renewable energy from low-temperature heat waste.
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They can carry five to 20 times more current in the same unit area while reducing the amount of energy lost as heat by 75-97% (depending on whether the current is alternating or direct), even after accounting for all the nitrogen-cooling paraphernalia.
Similarly, solar thermal energy--which harnesses the heat of the sun to generate steam-powered turbines--consumes more than 2, 600 liters of water per megawatt hour, 200 liters more than coal-powered generation needs to produce the same energy.
Like the first book, the new book surveys the hot spots in the clean tech space, which include net-zero energy green buildings, advanced waste heat technologies for combined heat and power and several other technologies.
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The heat is supplied by sources that range from waste-to-energy facilities and biomass boilers to micro-CHP fuel cells and solar-thermal arrays.
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Sabre Industries, which provides wireless towers, monopoles and transmission structures, and Nobao Renewable Energy, a Shanghai-based provider of heat pumps used to cool commercial buildings, did not price as expected.
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It's also more energy-efficient: The Twenty generates little heat and, in our tests, drew less than 1.5 watts on standby (the AirPort Express pulled more than twice that), which means you can in good conscience leave the Twenty plugged in and turned on, ready to play on a whim.
Veolia Environmental Services was the other firm fighting to run the incinerator, and whose spokesperson said it believed it was "sympathetic with the local environment and represented a unique opportunity to use the residual waste to provide a secure source of sustainable energy and heat to the neighbouring Tata Steel steelworks - a major source of employment in the area".
But the earth itself radiating energy outwards in the form of long-wave heat rays.
Furthermore, by capturing and reusing energy that would otherwise be lost in waste-heat, CHP improves overall efficiency by double digits.
Micro-CHP encompasses a spectrum of energy technologies that produce heat (which can be used for space heating and hot water) and electric power simultaneously.
Think about it this way: If you haven't upgraded your home yet, it's not just heat or cool air that's escaping -- it's energy and money that you are wasting.
Any policy to reduce heat-trapping pollution will inevitably target the main sources of Americans' energy: the coal burned by power plants for electricity and the oil that is refined to run automobiles.
The potential efficiency savings from such projects are immense, says Neal Elliott, an expert on combined heat and power (CHP) systems with the American Council for an Energy-Efficient Economy.
The remaining two-third of the energy contained in the fuel is lost as waste heat.
Research suggests that up between 20 and 30 gigawatt-hours (GWh) of electric energy could be stored as useful heat in hot water.
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Heat networks provide economies of scale for existing clean-heat technologies and provide markets for surplus heat from industry, biomass CHP and energy from waste.
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This part of the infra-red spectrum, with wavelengths close to that of visible light, carries heat energy.
ArcelorMittal Steel USA is finding an uncommon way to beat the competition: It is cutting energy consumption at one of its steel plants in Chicago by re-using heat to make electricity.
Turning fossil-fuel plants on and off adds inefficiencies, producing carbon emissions just to heat up boilers before energy production can begin.
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The typical coal-fired power plant, for example, loses over half the input energy as waste heat before the first electron zips out of the facility.
The energy-efficient glass is not cheap and, without curtains, loses twice as much heat as a standard 6-inch fiberglass-filled wall.
While methane is a cleaner source of energy than oil or coal when burnt, on its own it is an unusually powerful heat-trapping agent -- perhaps 20 times more potent than carbon dioxide.
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