Prototype of a solar cell driven, thermoelectric refrigerator, which is mainly
configured by the array of solar cells, controller, storage battery, rectifier and
thermoelectric refrigerator, is shown in Fig. 1. In daytime, solar cells receive solar
energy and turn it into electric power supplied to thermoelectric refrigerator by
means of photovoltaic effect. If the amount of electric power production is large
enough, the power surplus can be accumulated in storage battery besides driving the
refrigerator. If the solar cells can not produce enough electric power, for example, in