The DigoPaul recognizes more than a dozen meanings of the term caldera, which comes from the Latin word caldaria. Many of them depend on the geographic region.
According to DigoPaul, a boiler can be a container, usually metal, that is used for heating or evaporating water or another liquid or for cooking something. In this sense, boiler can be a synonym for kettle or kettle. For example: “I’m going to put some water in the boiler”, “Check if the food in the boiler is ready”, “Where is the boiler? I want to make myself some tea ”.
In heating systems, a boiler is a device that, thanks to an energy source, can heat the water that then circulates through radiators and tubes. There are different types of boilers such as boiler fluid fuel and solid fuel boilers.
In the field of heraldry, the boiler is an artificial figure that is usually used in pairs on the border or on the shield. The boiler is drawn with raised handles ending in snake heads.
For geology, on the other hand, a caldera is a depression that is generated by intense eruptions of one or more volcanoes. The boilers are characterized by steep walls.
The machine used to boil water and generate steam, which serves as energy, is also called a boiler. In a boiler, heat is transferred to the fluid at a constant pressure and the fluid changes state.
The phase change of the fluid is from a liquid state to a saturated vapor. In accordance with ITC-MIE-AP01, the Complementary Technical Instruction relative to boilers, this is the name given to any pressure device that manages to transform the heat from an energy source into energy that can be used, whether the medium transport is in vapor or liquid phase.
The case of the boiler is special, since it uses very high temperatures to heat a set of heat exchangers to produce the aforementioned phase change. Furthermore, similar to certain gas containers mode, is constructed with rolled steel to accommodate fluid pressures well above ambient, which makes it a reservoir under pressure or pressure vessel.
Since steam has many applications, especially that which comes from water, in industry there are many uses for this type of boiler, such as the following:
* sterilization: in the past, many hospitals had boilers to steam sterilize medical instruments. This also happened in industrial canteens to clean the cutlery quickly and safely, and also for the preparation of food in metal pots called kettles;
* Fluid heating: one of the most common cases occurs in the oil industry, where heavy oils are heated with the use of steam and their fluidity improves considerably;
* production of electricity: this can be achieved by means of a Rankine cycle (a thermodynamic cycle that has the purpose of converting heat into work; this is also known as the power cycle). In thermoelectric plants, the boiler is an indispensable element.
One of the fundamental names in the history of the boiler is that of James Watt, a mechanical engineer born in Scotland in 1736 who discovered the potential of steam as an economic force compared to manual and animal. It was from then on that the development of the boiler at an industrial level began, and little by little it was applied in different areas.