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Thermoelectric Technology |
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The Peltier Effect: Thermoelectric cooling, is a solid-state method of heat transfer through dissimilar semiconductor materials. In a conventional refrigeration system, the main working parts are the evaporator, condenser, and compressor. The three main working parts in a thermoelectric refrigeration system are a cold junction, a heat sink, and a DC power source. Therefore, the thermoelectric cooling system refrigerates without refrigerant and without the use of mechanical devices, except perhaps in the auxiliary sense. |
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Understanding Air Conditioner Ratings Ratings Thermoelectric Modules: Thermoelectric systems: Air Conditioners, United States: Air Conditioners, Europe: Performance Curves: The rated performance value shown for a positive 20 degree F delta T condition is true. However, TECA does not consider a 20 degree F delta T to be a valid rating condition for an air conditioner. This value is only shown for purpose of competitive parity with those manufacturers who choose this condition for rating their products. A performance rating stated at the positive 20 degree F delta T condition is more appropriate for above ambient heat exchangers such as heat pipes or for specific applications where it should be clearly stated. Understanding Different Performance Curves
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General Product Notes: TECA builds both air cooled and liquid cooled products. The model numbers of the products (example: AHP1200XMHC) can be very descriptive of the product. Air cooled products (prefix -AHP) use fans and finned heat sinks to transfer heat. Liquid cooled products (prefix-LHP) require a flow of water or cooling fluid to dissipate the heat. Most product families offer a selection of DC or AC voltages and temperature controllers detailed with complete part numbers on their individual catalog pages. Standard and custom air conditioners, cold plates (suffix-CP and CPV) and liquid chillers (prefix-TLC) are all made by TECA. Cooling is standard and heating can be optional or standard. Products capable of both heating and cooling typically but not always include “HC” in the suffix. The heating can be from resistive heaters or via reverse polarity (rev. pol.) input to the thermoelectrics. |
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Air Conditioners: Air conditioners come in many styles to meet many needs. These styles are indicated by the prefix and the suffix in the model number. The suffixes are “AHP”, air cooled heat pump, “FHP”, flush mount heat pump, and “LHP”, liquid cooled heat pump. |
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Cold Plates: Cold plates are also offered in air and liquid cooled versions. The cold plate itself is a flat aluminum plate. The prefixes “AHP” and “LHP” and suffixes “CP”, “CPHC” and “CPV” are also used as descriptive modifiers in cold plate model numbers. |
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Liquid Chillers: Standard liquid chillers (prefix "TLC" and “RLC”) are all air cooled products. They come in versions VAC or VDC, with or without temperatures controls or pumps. |
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