Circulation Heaters: Needle in the Hay
The needle in the haystack metaphor is often used as a gentle way to tell someone that whatever they are waiting for or searching for is probably not going to come or be found. It’s all about the odds, and the odds don’t look good when something as small and thin as a needle is buried in a giant haystack full of small, thin pieces of hay. However, a match in a haystack would be a very different kind of metaphor. It is something very small that could none the less change the physical structure of the haystack in the snap of a finger, or more appropriately, strike against flint. Circulation heaters are like a match in the haystack, but instead of being a possible danger, they affect positive change for a large amount of substance.
Electric heaters that are placed within a liquid or gas system to change the temperature of said liquid or gas are called circulation heaters, which are very similar to immersion heaters except for the fact that circulation heaters are often installed within the container rather then immersed for a period of time like immersion heaters. Applications that require the installation of circulation heaters within systems to preheat, raise the temperature and maintain a temperature of gas or liquid include septic tanks, water tanks, chemical processing tanks, stock tanks, asphalt processing tanks and livestock tanks. Substances that are often affected by the temperature control of a circulation heater include asphalt, tar, petroleum, wax, water and inorganic chemicals within the agricultural, construction, chemical processing, plastic extrusion and metal extrusion industries. The key to ensuring that circulation heaters are matches within the haystack, positively affecting the temperature of the substance rather then an ineffectual, lost needle is to ensure that the amount of heat it can produce will penetrate throughout the system. When a circulation heater is being purchased, contrasting the size and wattage capabilities against the type of substance and how much there is of it will make all the difference in the world.