Evaporation Vaporization

Unconfined Vapor Cloud Explosions (UVCEs) and Boiling Liquid Evaporating Vapor Explosions (BLEXT s)... 

Esparza, E. D., and W. E. Baker. 1977b. Measurement of Blast Waves from Bursting Frangible Spheres Pressurized with Flash-evaporating Vapor or Liquid. NASA CR-2811. Washington NASA Scientific and Technical Information Office. 

Verdacht, m. suspicion, distrust, verdachtig, a. suspicious, suspected, verdkmmen, v.t. tamp, dam check stunt. Verdampfapparat, m. evaporating apparatus, evaporator vaporizer carburetor, verdampfbar, a. vaporizable volatile. Verdampf-barkeit, /. vaporizability, volatility. 

Verdampfer, m. evaporator vaporizer carburetor. -kolonne, /. evaporating column evaporator tower. 

Verdampfung, /. evaporation, evaporating vaporization. — — durch Entspannung, flash evaporation. 

Vapor compression evaporator, see Evaporator, vapor compression ... 

KEY TERMS vapor pressure volatility evaporation vaporization endothermic... 

The MC-ICP-MS consists of four main parts 1) a sample introduction system that inlets the sample into the instrument as either a liquid (most common), gas, or solid (e.g., laser ablation), 2) an inductively coupled Ar plasma in which the sample is evaporated, vaporized, atomized, and ionized, 3) an ion transfer mechanism (the mass spectrometer interface) that separates the atmospheric pressure of the plasma from the vacuum of the analyzer, and 4) a mass analyzer that deals with the ion kinetic energy spread and produces a mass spectrum with flat topped peaks suitable for isotope ratio measurements. 

Neither the numerieal eoefficient 8 nor the eonstant 10, also ealled the deuterium excess d, are eonstant in nature. Both may vary depending on the eonditions of evaporation, vapor transport and preeipitation and, as a result, offer insight into eli-matie proeesses. The deuterium exeess d is a valuable tool to derive information on relative humidities. 

Fuel volatility is an extremely important factor related to fuel combustion and burning efficiency. Evaporation, vaporization, and vapor pressure of fuel can all be reduced in cold environments. Poor startability and warmup of gasoline and diesel engines can be directly related to fuel volatility. Also, cold kerosene will not vaporize and bum as efficiently in wick-fed systems. 

Let s say we have a centrifugal refrigeration compressor, driven by a motor. The motor is tripping off because of high amperage. Should we open or close the suction throttle valve shown in Fig. 22.2 Answer— close it. Of course, both the evaporator vapor outlet temperature and the process fluid outlet temperature will increase. But that is the price we pay for having too small a motor driver on the compressor. Does this mean that when our home air conditioner gets low on freon, our electric bill drops Correct. But the price we pay is a hot home. 

Crystallization that occurs during evaporation can potentially be intensified by use of vapor recompression and spinning discs. In this scenario, the evaporated vapor is compressed and then condensed on the bottom of the discs to heat the crystallizing fluid (58). This approach may permit operation at higher temperatures, lower surface area, and less time. 

Vapor barriers or vapor fences to contain dense, evaporated vapors and promote dispersion and... 

In some cases, as with pulp-mill liquors, the evaporator vapors contain constituents more volatile than water, such as methanol and sulfur compounds. Special precautions may be necessary to minimize the effects of these compounds on heat transfer, corrosion, and condensate quality. They can include removing most of the condensate countercurrent to the vapor entering an evaporator-heating element, channeling vapor and condensate flow to concentrate most of the foul constituents into the last fraction of vapor condensed (and keeping this condensate separate from the rest of the condensate), and flashing the warm evaporator feed to a lower pressure to remove much of the foul constituents in only a small amount of flash vapor. In all such cases, special care is needed to properly channel vapor flow past the heating surfaces so there is a positive flow from steam inlet to vent outlet with no pockets, where foul constituents or noncondensibles can accumulate. 

Evaporation (vaporization) A process in which a pure liquid, liquid mixture, or solvent in a solution is vaporized. 

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