Semiconductor Small fridge with different size from COOLER Limited
The working principle of semiconductor refrigeration is roughly as follows:
Thermoelectric effect: A semiconductor material produces a temperature difference at both ends when an electric current passes through it. This effect is called the thermoelectric effect or the Pohr effect. When an electric current passes through a semiconductor material, the free electrons and positive holes in it will move at different electron energy levels, resulting in the transfer of energy, thereby generating or absorbing heat.
Peltier effect: A special case of the thermoelectric effect is the reverse effect of the Pohl effect, called the Peltier effect. When an electric current passes through a semiconductor material, the Peltier effect allows heat to be transferred from one port to another, depending on the direction of the current.
Refrigeration process: In semiconductor refrigeration equipment, two different types of semiconductor materials (usually P-type and N-type semiconductors) are connected together to form a thermoelectric pair. When an electric current passes through this thermoelectric pair, heat is transferred from one end of the semiconductor material to the other end of the other semiconductor material, causing one port to become colder and the other port to become hotter.
Cooling effect: By controlling the direction of the current, the cooling effect of the refrigeration module can be controlled. When the direction of the current changes, the cooling and heating effects of the refrigeration module will also change accordingly.
Semiconductor refrigeration technology has some advantages, such as small size, silent operation, and no need to use environmentally harmful substances. However, its refrigeration efficiency is usually low and its application range is limited, so it is mainly used in some small refrigeration equipment and specific application scenarios.
