powervolt , the units use ice cubes, cooling batteries or cold water. This also allows the temperature in a room to be reduced considerably. This is achieved with these units by means of evaporative cooling. The physical fact is used that a certain amount of heat (energy) from a liquid creates a gaseous state of aggregation. The mobile air conditioners, such as the Powervolt system, are equipped with practical functions. Compared to a large air conditioner, mobile units are relatively inexpensive. They consume less electricity, are transportable and therefore offer the advantage that they can be used flexibly. Mobile refrigeration units work freestanding and independently. Connection work is not necessary and there is no exhaust air hose. Therefore no wall breakthrough or window gap is required. Many cooling units work much more quietly and are therefore very popular in offices or bedrooms. A small disadvantage is that classic electic device like Powervolt have a limited range. Therefore they can only
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