👉 A preheater is a device used in the heating of liquids or gases. It works by introducing a small amount of heat to the liquid or gas, causing it to expand and cool down rapidly. This process helps to increase the temperature of the fluid or gas, which can be useful for heating up a specific area of a system. Preheaters are often used in industrial processes where the temperature needs to be controlled or regulated. They are commonly used in steam engines, water heaters, and other
