Tenney Environmental Ships Custom Walk-In Altitude Chamber to the Aerospace and Defense Industry

Tenney Environmental, a division of Thermal Product Solutions, announced the shipment of a custom Walk-In Altitude Chamber to the aerospace and defense industry. The chamber will be used to simulate real-world atmospheric conditions to support customer product testing under extreme flight conditions. 

The walk-in environmental test chamber has an operating temperature range of -86°C to +150°C and an altitude range from site level up to 150,000 feet, with adjustable transition rates. The interior dimensions are 8’ W x 8’ D x 8’ H, providing a total workspace of 512 cubic feet.

The unit is designed with a vertical airflow configuration that includes perforated ceiling and floor panels to deliver uniform airflow throughout the workspace, simulating flight ascent and descent conditions. To replicate real-world atmospheric environments, the chamber utilizes a combination of thermal fluid conditioning, direct expansion refrigeration, a liquid nitrogen system, and a vacuum system.

The temperature of the chamber is controlled by a Tenney Smart 1.2 touchscreen controller, featuring a 10-inch HMI. Smart 1.2 is a PLC-based controller designed in-house by Tenney, providing real-time and historical color graph displays for temperature and humidity, setpoint monitoring, and Ethernet and RS485 communication capabilities.

“This altitude testing walk-in room combines advanced airflow design, integrated multi-system refrigeration, and precise control to accurately simulate demanding atmospheric environments. Our team works closely with customers to deliver chambers that meet complex testing requirements while ensuring safety and reliability.”

– Justin Kashner, Applications Engineer / Vacuum Products Engineering Specialist

Unique features of this Tenney custom walk-in test chamber include:

• Thermal fluid conditioning system
• Direct expansion refrigeration system
• Liquid nitrogen system for cooling boost
• Vacuum system
• Smart 1.2 PLC with Ethernet communication capabilities
• Two (2) 15”x15” vacuum rated viewing windows 
• Interior lighting for the workspace
• TempGuard V over/under temperature protection system with alarm notification

Additionally, the walk-in altitude test chamber was fully assembled and tested at the factory prior to shipment. Factory testing included Air Circulation Temperature System and Thermal Shroud Temperature System testing to verify performance and safe operation. This pre-shipment testing ensures efficient installation and setup at the customer’s facility.




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