A bimetal thermostat is a widely used temperature control device that operates based on the principle of two different metals expanding at different rates when exposed to heat. This simple yet efficient technology has been used for decades in a variety of industries, from household appliances to industrial systems. This article explores the working principle, applications, and advantages of bimetal thermostats, shedding light on their significance in maintaining temperature regulation.

    Working Principle of Bimetal Thermostats

    A bimetal thermostat consists of two layers of different metals, typically a metal with a high coefficient of expansion, such as brass, and a metal with a lower coefficient, such as steel. These metals are bonded together to form a single bimetallic strip. When the temperature increases, the two metals expand at different rates, causing the strip to bend. The degree of bending is directly proportional to the temperature change.