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Test chambers are indispensable tools in various industries to simulate and investigate environmental conditions that products might be exposed to during their life cycle. From testing the durability of electronic devices to evaluating the performance of pharmaceuticals, test chambers play a critical role in product reliability and safety. Test chamber cooling is an essential component of these systems and provides precise control over temperature and humidity levels. In this blog, we’ll dive into how test chamber cooling works and how it enables accurate and repeatable test conditions.

Understanding the test chamber cooling

Test chamber cooling is based on the same basic principles as conventional cooling systems, but with some special adaptations to meet the unique requirements of test environments. The main components of the test chamber cooling include:


At the heart of the cooling system is the compressor. It acts as a pump and motor and compresses the refrigerant gas, increasing its temperature and pressure.


The high-pressure, high-temperature refrigerant gas then flows into the condenser, where it releases heat into the environment. As the gas cools and condenses, it turns into a liquid state.

Expansion valve

The liquid with reduced pressure and temperature reaches the expansion valve. Here there is a sudden drop in pressure, causing part of the refrigerant to evaporate and its temperature to drop sharply.


The cold refrigerant enters the evaporator, which serves as a heat exchanger within the test chamber. During the test process, the evaporator absorbs heat from the environment and thus lowers the temperature of the test chamber. This controlled cooling allows precise regulation of the test conditions.

Maintain the test chamber

Reliable and consistent test results depend on the proper functioning of the test chamber cooling system. Regular maintenance is important to ensure efficient operation. Here are some important aspects of test chamber cooling maintenance:

Calibration: Regular calibration of temperature and humidity sensors is critical to ensure accurate and repeatable test conditions.

Cleanliness: Keep the condensers and evaporators clean to optimize heat transfer and prevent clogging.

Refrigerant charge: Regularly check the tightness of the system to ensure that no refrigerant is leaking, as insufficient charge levels can affect the cooling capacity. In addition, the environment would be unnecessarily polluted.

Defrosting: Some test chambers may require regular defrosting to prevent ice from forming on the evaporator and to ensure optimal performance.

Advantages of the test chamber cooling

Accurate simulation: Test chamber cooling provides precise control over temperature and humidity levels, ensuring accurate simulation of real-world environmental conditions for product testing.

Reliable results: Consistent and repeatable test conditions provided by the cooling system lead to reliable test results and enable manufacturers to make informed decisions about their products.

Safety guarantee: In industries such as pharmaceuticals and aerospace, where product safety is a top priority, test chamber cooling plays a crucial role in evaluating the performance of products under extreme conditions and ensuring compliance with safety standards.

Clitec: Your partner for test chamber cooling and maintenance services

When it comes to ensuring the peak performance of your test chamber cooling systems, you can count on Clitec’s extensive expertise. We understand the central importance of precise test conditions for your product results. That’s why we stand by your side with a holistic approach that goes beyond first-class test chamber cooling systems. Our comprehensive maintenance services are designed to ensure that your test chamber cooling systems operate continuously and in the best possible condition.

Our highly trained experts use their expertise and experience to ensure that your test chamber cooling systems perform optimally. From regular calibration of temperature and humidity sensors to thorough cleaning of condensers and evaporators, we take care of every aspect that could affect the performance and reliability of your test chamber. Our professional maintenance not only ensures consistent test conditions, but also a longer service life for your test chamber cooling systems.

Clitec goes beyond traditional maintenance by offering a customized approach that adapts to the specific needs of your industry and your products. We understand that different industries have different standards and safety requirements, and our services are designed to meet those needs. Especially in industries such as pharmaceuticals and aerospace, where product safety and reliability are top priorities, Clitec offers you a reliable partnership for test chamber cooling and maintenance.

Rely on Clitec as your reliable partner to ensure the quality, safety and performance of your products. Our mission is to provide you with innovative solutions that go beyond your expectations. Rely on Clitec to get the most out of your test chamber cooling systems and make informed decisions about your products.


Test chamber cooling is a critical aspect of test environments, providing precise control over temperature and humidity conditions. By understanding how the cooling system works and following proper maintenance practices, industries can rely on test chambers to simulate realistic environmental conditions and evaluate the performance of their products with confidence. Whether testing electronic components, pharmaceuticals or other materials, test chamber cooling ensures that products meet the highest quality and safety standards.


Lester, G. (2022) The rise in popularity of refrigerated drawers – FFD, The Rise in Popularity of Refrigerated Drawers – FFD. Available at: https://www.fridgefreezerdirect.co.uk/ffd-info-centre/latest-news/refrigerated-drawers-the-new-heavyweight-of-kitchen-storage (Accessed: 24 July 2023)