Our standard air-to-air (A-A) coolers use solid-state thermoelectric technology to actively and precisely remove heat from a re-circulating air stream. These designs are very compact, rugged and provide strong, reliable cooling performance. We offer two standard air-based designs with 72 watt and 144 watt maximum rated cooling capacities. Key design features include high-fin count heat sinks, high flow/pressure rated 80mm fans (and shrouds) and high quality thermoelectric modules.
Our air-to-air cooler subassemblies actively pump heat from one air-based heat sink (cold side) to another (hot side) using a thermoelectric circuit. These chillers are solid state (no Freon) and operate on safe, low voltage DC power. Since heat is actively pumped, temperatures significantly below ambient can be achieved and also stably maintained (not possible with passive heat exchanger designs). The amount of heat transferred and the resultant air temperatures can be accurately controlled by regulating the assembly DC voltage. The reversible nature of the thermoelectric circuit also allows easy bi-directional temperature control by simply switching the DC polarity, i.e., to achieve both cooling or heating on one surface. The cooling performance of our solid-state chillers offers advantages over Freon-based systems, including greater control flexibility, smoother temperature transitions and more precise temperature control. Design Details – Our standard designs employ high performance heat sinks. Our custom heat sinks enable close fin pitch similar to bonded-fin types, but are one piece, thereby avoiding the resistance associated with the adhered fin-base joint. This design allows high heat transfer coefficient performance, not possible with conventional heat sinks. Heat sinks are critical components in thermoelectric subassemblies since all heat (cooling + electrical) must pass through them to or from the environment. An inadequate heat sink in these types of designs can significantly inhibit performance. The heat sink/fan configuration used in our standard assembly heat sinks was optimized to achieve the highest heat transfer consistent with acceptable airflow using iterative computer modeling combined with experimental verification testing. Our fan shroud positions the axial DC fan with proper clearance to provide near uniform air flow through the entire array of heat sink fins. Our standard assemblies are specifically designed to be modular. Cooling capacity can be increased by adding and linking multiple units on a common platform. This is a less costly and more efficient means to expand capacity versus utilizing larger heat sinks and fans. Our air-to-air cooler platform is available in two standard capacities, although capacity can be further expanded if required. The single cooler unit has a footprint of 130mm (L) x 80mm (W) and provides 72 watts of cooling (Qc) at Vin = 12 volts and ambient T = 25oC (DT=0C). Options – Within the standard cooler subassembly platform, we can provide alternate TEC circuit configurations to meet specific power requirements. We can also provide various ducting options for the product, including designs suitable for sealed closed-circuit re-circulation of the air. All of our standard products have been designed for trouble free, long-life performance. FEATURE OVERVIEW: TYPICAL APPLICATIONS:
COMMON FEATURES FOR ALL SUBASSEMBLIES CONNECTIONS: Mounted 6-Terminal Connector (Cable termination optional) COMPONENTS: 80x38mm Ball Bearing Fan, High Fin Density 6063 Al Heat Sink, High Reliability Thermoelectric Modules, Custom Sheet Metal Al Shroud, Stainless Steel Fasteners RELIABILITY: Fans: 50K hours MTBF, Fan Perf.: 79CFM, 0.55 in-H2O, 55 dBA, TEC’s: >100,000 hours MTBF DC INPUT NOMINAL PERFORMANCE ASSEMBLY DIMENSIONS DC INPUT NOMINAL PERFORMANCE ASSEMBLY DIMENSIONS
ASSEMBLY DRAWINGS P/N AA13080 Single Air-Air Cooler
Single Air-Air Cooler P/N AA13080 Description: Single air-air cooler utilizing two TECs wired in parallel (1SX2P). Recommended operating voltage is 12 volts. Qc = cooling capacity in cold side heat sink. Ta = ambient temperature in heat sink. Tc = cold side air temperature. Th = hot side air temperature. COP = coefficient of performance (= Qc/Pin). Links to other performance curves for this subassembly (P/N AA13080): COP v. Voltage Curve (click to link) >> Qh v. Voltage Curve (click to link) >> Current v. Voltage Curve (click to link) >> DUAL Air-Air Cooler P/N AA130160D Description: Double air-air cooler, each unit utilizing two TECs wired in parallel (1SX2P) ro four total for the assembly. Recommended operating voltage is 12 volts. Qc = cooling capacity in cold side heat sink. Ta = ambient temperature in heat sink. Tc = cold side air temperature. Th = hot side air temperature. COP = coefficient of performance (= Qc/Pin). Links to other performance curves for this subassembly (P/N AA130160D): COP v. Voltage Curve (click to link) >> Qh v. Voltage Curve (click to link) >> Current v. Voltage Curve (click to link) >>
Description
Specs.
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AIR-TO-AIR COOLER PRICING $225 (Qty1-10)
P/N AA13080
Vin = 12 Volts (TEC Circuit)
Iin = 11-12 amps
Vin = 12 Volts (Fan Circuit)
Iin = 1.5 amps (two fans)
Typ. Cooling Qc = 72 watts
(ambient = 25°C, DT = 0)
130mm (L) x 82mm (W) x 220mm (H)
Weight: 2.2 Kg (4.8 lbs.)_______________________________________________________________
DUAL AIR-TO-AIR COOLER PRICING $431 (Qty1-10)
P/N AA130160D
Vin = 24 Volts (TEC Circuit)
Iin = 11-12 amps
Vin = 24 Volts (Fan Circuit)
Iin = 1.5 amps (Four fans)
Typ. Cooling Qc = 144 watts
(ambient = 25°C, DT = 0)
130mm (L) x 165mm (W) x 220mm (H)
Weight: 4.5 Kg (9.9 lbs.)_______________________________________________________________
Drawings
P/N AA130160D Dual Air-Air Cooler
Performance
Please note: Cooling performance curves reflect net cooling capabilities of the coolers, exclusive of performance losses from heat gains through conduit or cabinet walls. We recommend that all cooler based systems be designed carefully and well insulated to reduce performance degrading heat gains. 
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