How Peltier Temperature Control Works
Using High-Precision and Energy Saving Peltier Temperature Control
Use of constant current control technology reduces power consumption during light loads.
Pelter temperature control which offers compact precision temperature control operates by either a constant voltage which is switched ON/OFF depending on the load conditions, or by constant current control method by which the current is varied depending on the load. Both control methods offer high precision control, however the constant voltage method has the disadvantage that even when heat loads are low, it may be difficult to keep power consumption down.
At ORION Machinery we've adopted constant current control in order to combine high precision with energy savings in precision temperature control for liquids, compressed air, and room air.
What is Peltier Temperature Control?
Peltier devices are constructed by combining alternating layers of P- and N-type semiconductors into a plate-like structure. By applying direct current to the Peltier device, it will exhibit a phenomenon whereby there will be movement of heat from one side of the device to the other; one side will get hot, increasing the temperature on that side, while the other side will actively become cool, thus cooling that side.
By changing the direction of current through the Peltier device, the sides which exhibit heating and cooling can be reversed. These devices have a fast response speed, and high precision temperature control can be achieved through high speed switching of the current.