Fandis: Gesamtkatalog 2017

174 ■ Fandis A thermoelectric unit is a device for the transfer of heat. Such units come ready for fitting and cool using electrical energy only. Thermoelectric units achieve the same results as traditional compressor systems without the use of gas or moving components (except fans, if applicable). HOW DO THERMOELECTRIC UNITS WORK? Thermoelectric units are simply small static heat pumps, which use the so-called “Peltier” effect. Heat is transferred as a result of a flow of electrical current through thermoelectric modules, which are the main components in the system. Heat is absorbed by one side of the unit (the cold side) and as a result the temperature drops. The other side dissipates the heat into the surrounding environment (hot side). The process can be reversed by simply inverting the direction of the current flow. WHAT ARE THE ADVANTAGES COMPARED TO A COMPRESSOR SYSTEM? Thermoelectric units have no moving mechanical parts (except fans, if applicable) and are therefore extremely reliable, have an almost unlimited life span and require no maintenance. The fact that they are “static” makes them immune to vibration meaning they can be used in any position, which makes them particularly suitable for applications where they are mounted on systems in motion. They contain no pollutants such as CFC or other gases, which can harm the environment ambient and have simpler and more compact structure than compressor systems. What is a thermoelectric unit? Thermoelectric cooling units are used to cool and dehumidify the air inside electrical cabinets and to separate the internal and exterior environments. Air conditioners are usually used when outside temperatures are unfavorable i.e. over 35°C and the atmosphere is contaminated by oil or dust. Cooling Units Introduction