Home / Blogs / Blog Details

How Do Environmental Test Chambers work?



Environmental test chambers are used in environment simulation, to duplicate the natural phenomenon such as pressure, high temperature, rain, UV effect, light intensity and humidity. It allows the engineers or researchers to observe the effects of the environmental changes, on test subjects placed inside the chamber.

An environmental test chamber checks the quality of the test substance and finds any flaws in the structure or weakness in design. Environmental testing is of two types: climatic and mechanical. Climatic testing replicates the effects of natural environmental conditions such as rise or decrease in temperature, low or high humidity and precipitation on the test subject but in rapidly changing but controlled conditions. Mechanical testing replicates the effects of normal environmental conditions such as the effect of shock or vibration.

Market for Environmental Test Chambers

The Global Environmental Test Chamber Market is expected to grow at a CAGR of 4.4% over the three year period, 2017-2020. The market driving factors for the environmental test chambers are increased emphasis on product testing, tests for reliability of certain products, testing of every prototype and the deep analysis of failures. Europe is the largest shareholder in theglobal environmental test chamber market, followed by North America, and Asia Pacific. Asia Pacific is expected to leave behind even Europe,because of a rapidly growing economy, population, and initiatives by governments which are supposed to face the population growth and climate change.

How do they work?

  • To create temperature changes the test chambers employ electric heaters in coordination with refrigeration systems to cool or remove temperature from the internal space in the test chamber.  The refrigeration systems used in the chamber can be either mechanical or a liquid cooling system depending on the manufacturer.
  • To change the internal humidityof the system, steam generators are used inside it and to remove humidity a mechanical dehumidifying system is employed. If the researchers need more change in humidity than the original capacity of the test chamber they can add a powerful hair dryer to allow the test chamber to reach a relatively lower humidity. 
  • Salt Spray is used to test the corrosive properties of some substances. Generally used to observe how long polishes, paints, etc. can endure the naturally changing climatic conditions. To spray salt on the test subject, a salt solution is prepared and stored, then sprayed from a nozzle by the help of pressurized gas.


An environmental test chamber can be used to produce even the extreme temperatures, radiation and vacuum. They vary in size depending on their capacity and usefulness. They can be small as a microwave or large as a room which can be walked right in. They generally have viewports or video cameras installed to enable visual inspection of the test sample or later observations and can also have computer connectivity which records all the data digitally and displays it on a screen.

Request A Sample Copy Of Report