Air conditioning unit for a climatic chamber

The air conditioning unit used in climatic chambers is designed in accordance with multiple international and industry standards, such as IEC 60068, MIL-STD-810, ASTM D4332, ISO 16750, and AAMA501, covering requirements from automotive, aerospace, and electronics sectors. It offers customizable chamber volumes ranging from 100 L to 1000 L, enabling it to accommodate small electronic parts, medium industrial assemblies, as well as large automotive and aerospace test specimens. This system is widely applied in environmental reliability testing, thermal cycling, material aging evaluation, electronic product validation, and pharmaceutical stability studies, providing stable conditions and ensuring consistent, repeatable test results across various industries.     

Performance Advantages

1. Separated Power System for Stable Testing Conditions: The compressor, condenser, and heating modules are installed independently from the test chamber, effectively isolating heat output, vibration, and airflow disturbances. This ensures that sensitive items such as electronic components, batteries, and precision devices are exposed to accurate and undistorted environmental conditions during long-duration testing, with consistent temperature and humidity control throughout the process.

2. Fast Temperature Transition for High-Efficiency Evaluation: Using a high-capacity heating system combined with a mechanical compression refrigeration unit, the chamber is capable of rapidly shifting between –70 °C and +150 °C. With heating rates up to 3 °C/min and cooling rates of 1 °C/min, it supports accelerated thermal cycling and durability testing while maintaining stable environmental performance.

3. Low-Noise Operation for Laboratory Comfort: By relocating major power components outside the working area, operational noise is reduced to ≤65 dBA. This quieter performance makes it suitable for research environments where multiple experiments run simultaneously, allowing users to focus on monitoring, analysis, and testing without acoustic interference.

4. Space-Saving Structure with Flexible Configuration: The split design allows the main chamber to be installed in limited laboratory space, while external systems can be placed separately. With capacities ranging from 100 L to 1000 L and customizable internal layouts, it can handle everything from small samples to large assemblies. Its modular structure also simplifies installation, relocation, and future system expansion.

5. Precise Environmental Control with High Uniformity: Equipped with PT100 Class A sensors and optimized airflow circulation driven by centrifugal fans, the system maintains tight control accuracy of ±0.5 °C for temperature and ±2.5% RH for humidity. The airflow distribution is designed to eliminate uneven zones, ensuring all samples experience identical test conditions for reliable and repeatable results.

6. Durable Structure with Comprehensive Safety Design: The chamber is built with SUS304 stainless steel interior and a reinforced outer frame for strong resistance to corrosion and mechanical stress. It integrates multiple safety mechanisms, including over-temperature cutoff, current overload protection, water shortage alarms, refrigerant pressure monitoring, and grounding leakage protection, enabling safe and continuous long-term operation.

Operating Parameters of the Air Conditioning Unit for a Climatic Chamber  

Typical Tests Performed 

The air conditioning unit for a climatic chamber is capable of supporting a wide range of environmental test conditions, including thermal shock cycling from –40 °C to 85 °C, endurance testing within 0 °C to 70 °C, and high- and low-temperature exposure at 85 °C and –20 °C. It also enables damp heat and humidity testing up to 95% RH, storage life assessments at around 25 °C under controlled humidity, and hydrolytic aging studies between 20 °C and 70 °C. With continuous real-time monitoring, the system ensures stable and repeatable test performance. For instance, a battery pack can be subjected to cyclic temperature changes from –20 °C to 100 °C at a ramp rate of 3 °C/min under 80% relative humidity to assess its thermal reliability and structural stability.    

FAQs on the Air Conditioning Unit for a Climatic Chamber 

Q1: Is it possible to reach higher temperature ramp rates such as 20 °C/min?

A1: The standard system operates at ramp rates of around 5–10 °C/min, while upgraded or customized versions can be engineered to reach 20 °C/min or even higher, depending on specific testing demands.

Q2: Are alarm functions included in the system?
A2: Yes, the chamber is equipped with built-in audible alarms as a standard feature. Visual alarm indicators can also be optionally integrated and tailored according to user requirements.

Q3: Will adding custom ports or observation windows extend the delivery time?
A3: Minor modifications typically do not impact the normal delivery schedule. However, fully customized viewing windows may require an additional 5–10 days for production, and LIB organizes the workflow to minimize any delay in shipment.