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SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL
4. Technical Information
Peltier cooling units are intended to be used as a complementary accessory to larger industrial equipment. They are used
where heat needs to be dissipated from electrical control cabinets or similar enclosures in order to protect heat sensitive
components.
Peltier cooling units can dissipate heat from sealed enclosures such as control cabinets. At the same time they can reduce
the cabinet internal temperature to below the ambient air temperature. They are available in powder-coated sheet steel or
stainless steel housings. Peltier units have additional heating function by changing the supply polarity of the thermoelectric
elements. This is possible by using a combination of thermostats or having a specific polarity controller.
Peltier cooling units are resistant to extreme ambient conditions and can operate effectively even in environments which are
dusty and oily and where temperatures may vary from -4°F to 149°F. For the cooling capacities and environmental ratings
please refer to the type plate data.
5. Functional Principle
Functional Principle
The thermoelectric elements create a temperature difference between the internal and ambient heat sinks, making internal
air cooler while dissipating heat into the external environment. Fans help the transfer of convective heat from the heat
sinks, which are optimized for maximum flow. Peltier units can be mounted in any position because these units don’t have
a compressor or any moving parts. Depending on the mounting situation, the condensation management may need to be
considered and possibly adjusted.
1. Ambient Fans
2. Ambient Heat Sinks
3. Thermoelectric Elements
4. Insulation
5. Internal Heat Sink
6. Internal Fan
