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Calorimetry, a word I never heard before today, is the science of measuring heat changes. GE Life Sciences explains calorimetry in this video, which is actually an ad for some hi-tech laboratory equipment. -Thanks, Stephen Clegg!
The US Navy and NASA’s Jet Propulsion Laboratory are developing a engine that can efficiently generate energy from heat in the water. This engine could propel a ship indefinitely:
SOLO-TREC is outfitted with a series of tubes full of waxy phase-change materials. As the float encounters warm temperatures near the ocean’s surface, the materials expand; when it dives and the waters grow cooler, the materials contract. The expansion and contraction pressurizes oil, which drives a hydraulic motor. The motor generates electricity and recharges the batteries, which power a pump. The pump can change the float’s buoyancy, allowing it to move up and down the water column.
“In theory what you have now is unlimited endurance for something that has this type of engine,” said Thomas Swean Jr., team leader for ocean engineering and marine systems at the Office of Naval Research, which funded the project. “Other things can break, but as far as the energy source, it will only stop working if the ocean ran out of energy, which is unlikely to happen … One of the Navy’s goals is to have a persistent presence in the world’s oceans. This is the type of technology that leads you to that.”
Link | Photo: NASA/JPL/U.S. Navy/Scripps Institution of Oceanography
Using a new, high-tech material, German scientists Klaus Sedlbauer and Herbert Sinnesbichler have developed a coffee cup that will keep your drink at the optimum temperature for drinking. Phase change material (PCM) was already in use as a building and clothing material because of its temperature-regulating capability. Now it will keep your coffee from going cold!
CM is able to absorb and maintain heat or cold for long periods of time. It melts when warmed and solidifies when cooled. Different PCMs have different melting points. If a hollow-framed mug were filled with PCM that becomes liquid at exactly 136.4 degrees Fahrenheit (the ideal drinking temperature for warm beverages) and the mug’s reservoir filled with a warm beverage, the PCM would absorb excess heat, bringing the liquid down to drinking temperature and keeping it there long enough for you to enjoy your coffee.
Sedlbauer and Sinnesbichler are looking for a manufacturer and distributor for their coffee cup. Link – via babycreativeblog
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