Search results
Results From The WOW.Com Content Network
Electrolysis of water is using electricity to split water into oxygen ( O. 2) and hydrogen ( H. 2) gas by electrolysis. Hydrogen gas released in this way can be used as hydrogen fuel, but must be kept apart from the oxygen as the mixture would be extremely explosive. Separately pressurised into convenient 'tanks' or 'gas bottles', hydrogen can ...
Concentrating solar power can achieve the high temperatures necessary to split water. Hydrosol-2 is a 100-kilowatt pilot plant at the Plataforma Solar de Almería in Spain which uses sunlight to obtain the required 800 to 1,200 °C (1,070 to 1,470 K; 1,470 to 2,190 °F) to split water. Hydrosol II has been in operation since 2008.
Water activity ( aw) is the partial vapor pressure of water in a solution divided by the standard state partial vapor pressure of water. In the field of food science, the standard state is most often defined as pure water at the same temperature. Using this particular definition, pure distilled water has a water activity of exactly one.
A definition based on the Heat Wave Duration Indexis that a heat wave occurs when the daily maximum temperature of more than five consecutive days exceeds the average maximum temperature by 5 °C(9 °F), the normal period being 1961–1990.[12] The same definition is used by the World Meteorological Organization.
Gas water heaters have an exhaust vent or one to two exhaust pipes on the top, and still require electric power for electronics, sensing and ignition. A three-phase, 21 kW, 400-volt tankless water heater in Europe, with new European color coding for three-phase power. There are also heaters that use several single-phase circuits instead.
The hot and humid conditions will continue to bake much of D.C., Maryland, and northern Virginia for the rest of the week. Heat Advisory in effect for DC region Monday as scorching temperatures ...
The topography of Washington, D.C. is highly similar to the physical geography of much of Maryland. The city has three significant natural flowing bodies of water: the Potomac River and two tributaries, the Anacostia River and Rock Creek. The confluence of the Potomac and Anacostia forms the historic peninsula known as Arsenal Point.
For as hot as recent summers have been, D.C. has not seen a 100°F day since August 2016. Whether we do will likely depend on just how much humidity is present this weekend.