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Hexavalent chromium. Hexavalent chromium ( chromium (VI), Cr (VI), chromium 6) is any chemical compound that contains the element in the +6 oxidation state (thus hexavalent ). [ 1] It has been identified as carcinogenic, which is of concern since approximately 136,000 tonnes (150,000 tons) of hexavalent chromium were produced in 1985. [ 2]
A shell-and-tube heat exchanger is a class of heat exchanger designs. [ 1][ 2] It is the most common type of heat exchanger in oil refineries and other large chemical processes, and is suited for higher-pressure applications. As its name implies, this type of heat exchanger consists of a shell (a large pressure vessel) with a bundle of tubes ...
The Hex is a 2018 video game by Canadian independent developer Daniel Mullins. Its narrative takes place in a bar with six different characters the player controls; through the usage of flashbacks, the game encompasses different gameplay genres, each of which is associated with a player character.
Superheated steam was widely used in main line steam locomotives. Saturated steam has three main disadvantages in a steam engine: it contains small droplets of water which have to be periodically drained from the cylinders; being precisely at the boiling point of water for the boiler pressure in use, it inevitably condenses to some extent in the steam pipes and cylinders outside the boiler ...
Logarithmic mean temperature difference. In thermal engineering, the logarithmic mean temperature difference ( LMTD) is used to determine the temperature driving force for heat transfer in flow systems, most notably in heat exchangers. The LMTD is a logarithmic average of the temperature difference between the hot and cold feeds at each end of ...
4X game. Expansion to Galactic Civilizations II: Dread Lords . Expansion to Heroes of Might and Magic V . Grand strategy. Grand strategy. Turn-based campaign map with real-time tactical battles. Expansion to Medieval II: Total War . Grand strategy. Turn-based campaign map with real-time tactical battles.
The number of transfer units (NTU) method is used to calculate the rate of heat transfer in heat exchangers (especially parallel flow, counter current, and cross-flow exchangers) when there is insufficient information to calculate the log mean temperature difference (LMTD). Alternatively, this method is useful for determining the expected heat ...
Valve Anti-Cheat ( VAC) is an anti-cheat tool developed by Valve as a component of the Steam platform, first released with Counter-Strike in 2002. When the software detects a cheat on a player's system, it will ban them in the future, possibly days or weeks after the original detection. [ 1] It may kick players from the game if it detects ...