Clean and Green Technology

As we have seen during the pandemic, vaccine storage has been very challenging, therefore we need efficient vaccine storage systems. Frequent or long-duration power outages that use grid-powered cooling are impractical for vaccine storage. This is a serious challenge that threatens the continuity of the vaccine cold chain, especially in remote areas. the “Peltier cooling module” which works on thermoelectric refrigeration, aims to provide cooling by using thermoelectric effects rather than the more prevalent conventional methods like ‘vapor compression cycle’ or the ‘vapor absorption cycle’.
There are three types of thermoelectric effect: Seebeck effect, Peltier effect, Thomson effect. Peltier refrigerator works on the Peltier effect which states that when voltage is applied across two junctions of dissimilar electrical conductors, heat is absorbed from one junction, and heat is rejected at another junction. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump that transfers heat from one side of the device to the other, with the consumption of electric energy, depending on the direction of the current. Such an instrument is also called a Peltier device. It can be used either for heating or cooling, although in practice the main application is cooling.