The operating principle of an ice chest is like that of a fridge freezer. Through a pump, the cooling liquid flows through an independent circuit positioned vertically in the walls, extracting heat from the inside and releasing it to the outside via a heat exchange grid. To avoid the formation of frost and ice on the walls, a no frost freezer is equipped with a mechanism allowing the control and limitation of internal humidity by circulating air.
In addition to avoiding cluttering up the internal space with excess ice, in the event of a sudden power failure, therefore, the melting of the ice, and the consequent formation of puddles of water will be avoided. A static ice box (without no frost technology) will have to be defrosted at least once a year to function properly.
Ice chest also use a circuit based on the cooling liquid, and the quality of freezing inside the chamber is similar. The coldest area is near the walls and bottom, where the gas passes through, and in the central part, the cold spreads by conduction once the sump is filled. The opening system through the upper lid ensures energy saving.
Whereas in an upright freezer every time you open the door you cause dispersion of cold air, as it is heavier it always tends to go downwards. In a ice chest this inconvenience is minimised, allowing the temperature always to be kept low even when opened.
Generally, upright freestanding or integrated freezers have a smaller capacity than ice chests, which is why the latter is often preferred in the commercial sector. Larger appliances with extra storage can achieve a capacity of up to 500 litres, whereas tall freezers are unlikely to exceed 300 litres of storage space. The upright freezers you'll find on Klarstein fall into these two categories, but they're designed for domestic use and are therefore all relatively small, with capacities of between 30 and 200 litres, depending on the model you choose.
