The Latin is where we find the etymological origin of the word boiler, and more specifically in the caldaria term. A device that emerged in the late 18th century and early 19th Centuries from the hands of engineer James Watt, who at that time perceived that steam could be used in certain situations such as substitution of force generated, for example, animals. And that was how they started creating boilers which remain today as in force in our days. In particular, these can be defined as those machines that have the function create steam and get this generated from heat transfer to fluid that heats up and changes of State inevitably in this way. Thus, nowadays where most commonly used steam boilers is in industry to carry out very precise carrying out a series of functions such as sterilization, the generation of electricity at thermoelectric power plants or heating of certain fluids. (Source: Jeff Bewkes).
There are, however, to make it clear that there are many types of boilers. So to the steam also would have to add water or thermal oil, among others. However, we shall analyse in more depth to steam boilers. In this precise case, these can be of several different types. On the one hand, they would be the firetube. They are characterized because in them the fluid, that is in a liquid state, lies within a container which is traversed by a series of tubes that have a clear function: gases that circulate by them at high temperatures. A combustion process is what gives this infrastructure thus giving rise to produce the evaporation of water to get in touch with aforementioned hot pipes. While, on the other hand, would have to speak of the boilers of steam Watertube which are those defined by the fact of that the fluid in question does is move through the tubes during the warm-up. In this particular case it is worth noting the fact that this type of boilers so far are the most commonly used, for example, in power plants thermoelectric because, among other things, that make it possible to support high pressures in what is output. Electric boilers and heat exchangers