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2. Thermoelectric cooling - Wikipedia

   en.wikipedia.org/wiki/Thermoelectric_cooling

   Thermoelectric cooling uses the Peltier effect to create a heat flux at the junction of two different types of materials. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current.

3. Toolbox - Wikipedia

   en.wikipedia.org/wiki/Toolbox

   A toolbox could refer to several types of storage to hold tools. It could mean a small portable box that can carry a few tools to a project location or a large storage system set on casters. [1] Modern toolboxes are predominantly metal or plastic. Wood was the material of choice for toolboxes built beginning in the early 19th century.

4. Thermoelectric effect - Wikipedia

   en.wikipedia.org/wiki/Thermoelectric_effect

   The Peltier effect can be considered as the back-action counterpart to the Seebeck effect (analogous to the back-EMF in magnetic induction): if a simple thermoelectric circuit is closed, then the Seebeck effect will drive a current, which in turn (by the Peltier effect) will always transfer heat from the hot to the cold junction.

5. Energy conversion efficiency - Wikipedia

   en.wikipedia.org/wiki/Energy_conversion_efficiency

   Yellow and green, for example, make up more than 50% of what the eye perceives as being white, even though in terms of radiant energy white-light is made from equal portions of all colors (i.e.: a 5 mW green laser appears brighter than a 5 mW red laser, yet the red laser stands-out better against a white background).

6. Hydrogen-cooled turbo generator - Wikipedia

   en.wikipedia.org/wiki/Hydrogen-cooled_turbo...

   The bearings have to be leak-tight. A hermetic seal, usually a liquid seal, is employed; a turbine oil at pressure higher than the hydrogen inside is typically used. A metal, e.g. brass, ring is pressed by springs onto the generator shaft, the oil is forced under pressure between the ring and the shaft; part of the oil flows into the hydrogen side of the generator, another part to the air side.

7. Jacketed vessel - Wikipedia

   en.wikipedia.org/wiki/Jacketed_vessel

   A second shell is installed over a portion of the vessel, creating an annular space within which cooling or heating medium flows. A simple conventional jacket, with no internal components, is generally very inefficient for heat transfer because the flow media has an extremely low velocity resulting in a low heat transfer coefficient.