MFG Part Number 387000899
Tunnel Series Thermoelectric Cooler Assembly
The AAT-085-24-22 is a thermoelectric based air conditioner designed to temperature control small chambers used in analytical and medical diagnostic instruments. The unique design offers premium fans pushing air across-high density heat sinks to minimize the number of air flow paths required to operate. The design utilizes custom thermoelectric modules to maximize cooling capacity with a high coefficient of performance. Moisture resistant insulation is used to keep condensation from penetrating the TEM cavity. The unit operates on DC and is designed for an indoor lab use environment. It has a maximum Qc of 85 Watts when ΔT = 0 and a maximum ΔT of 31 °C at Qc = 0.

You can interact with the Performance Curves below to estimate the cooling performance by entering the thermal and electrical operating conditions for your application.
Click the [Save Changes] button to create a Customized PDF Datasheet.
Please Note: Actual application performance will vary from calculated values based on actual thermal design characteristics.

Electrical and Thermal Performance

Use the sliders, input fields and [UPDATE] button below to enter your application's electrical and thermal conditions. Use the Graph Y and X Axis buttons to display a variety of performance curves and use the Voltage/Current slider to choose the electrical operating point to display performance.
Click [Save Changes] button to save your results as a Customized PDF Datasheet.

Selected Operating Point
Cooling Power (Qc) = Watts
TEM Voltage = Volts
TEM Current = Amps
Power Supply = Watts
Power Dissipated (Qh) = Watts
Thot = °C
Fan Voltage = 24.0 Volts
Fan Current = 1.6 Amps
Optimum COP
Cooling Power (Qc) = 21.7 Watts
TEM Voltage = 14.4 Volts
TEM Current = 2.4 Amps
TEM COP = 0.6
Power Supply = 34.3 Watts
Power Dissipated (Qh) = 55.98 Watts
Fan Voltage = 24.0 Volts
Fan Current = 1.6 Amps
Maximum Qc
Cooling Power (Qc) = 51.9 Watts
TEM Voltage = 34.3 Volts
TEM Current = 5.8 Amps
TEM COP = 0.3
Power Supply = 199.2 Watts
Power Dissipated (Qh) = 251.1 Watts
Fan Voltage = 24.0 Volts
Fan Current = 1.6 Amps

Select Graph
Y - Axis

Select Graph
X - Axis

Imin: 1.3 A
Imax: 5.8 A

Vmin: 8.5 V
Vmax: 34.3 V
Click UPDATE to view changes in thermal operating conditions
Control Temp  
Ambient Temp  
Δ T  

Operating Temperature Range
-10 °C to 50°C
Supply Voltage
24.0 VDC nominal / 30.0 VDC maximum
Current Draw
5.0 A running / 6.6 A startup
Power Supply
120.0 Watts
Performance Tolerance
40,000 hours
2.50 kg

Mounting Hole Location
Wiring Schematic

1For indoor use only
2Units are generally maintenance free, however occasionally it is recommended to clean the heat sinks and fans of debris. This is best done with compressed air.

Any information furnished by Laird and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of Laird materials rests with the end user, since Laird and its agents cannot be aware of all potential uses. Laird makes no warranties as to the fitness, merchantability or suitability of any Laird materials or products for any specific or general uses. Laird, Laird Thermal Systems, Inc or any of its affiliates or agents shall not be liable for incidental or consequential damages of any kind. All Laird products are sold pursuant to the Laird Thermal Systems’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2019 Laird Thermal Systems, Inc. All Rights Reserved. Laird, Laird Thermal Systems, the Laird Logo, and other marks are trademarks or registered trademarks of Laird Thermal Systems, Inc. or an affiliate company thereof. Other product or service names may be the property of third parties. Nothing herein provides a license under any Laird or any third party intellectual property rights.

Date: 05/30/2020