Thermoelectric water coolers

Thermoelectric (Peltier)

— in this case, electronic cooling systems are built on Peltier elements — a special kind of converters that look like characteristic plates. When current is passed through such a converter, one side of the plate is cooled, and the other side is heated. Usually, water does not directly contact such a converter; cooling is carried out due to the flow of cold air created by a special fan. Compared to compressor refrigerators, electronic systems are much simpler, more reliable, smaller and cheaper. On the other hand, with higher power consumption, they have lower performance. And the efficiency of Peltier elements is not very high — in particular, they cool water, not to a certain temperature, but a certain number of degrees relative to the ambient temperature (usually 10 – 15 °C). It makes it difficult to get cold water in hot weather.