vacuum chamber operator

The large group of climatic chambers includes all laboratory instruments that reproduce certain atmospheric conditions in an isolated and controlled environment.

The most common and widespread are climatic chambers for temperature and humidity test, environmental chambers and growth chambers that lend themselves to a wide range of uses.

But there are also very specific chambers that are essential for some sectors: this is the case of the thermal vacuum chamber, also known by the acronym TVAC.

What is the TVAC Thermal Vacuum Chamber


The TVAC or Thermal vacuum chamber is a generally large climatic chamber that can perform the thermal vacuum test on materials and people. TVAC is characterized by being able to reach extreme temperature ranges ranging from -180 ° C to + 150 ° and by being able to reproduce equally extreme environments in terms of pressure, environments called “high vacuum”.

Some thermal vacuum chambers are also equipped with a xenon arc lamp system to reproduce solar radiation.


What is the TVAC Thermal Vacuum Chamber for?


The thermal vacuum chamber is mainly used in the aerospace sector.

The most advanced thermal vacuum chambers are in fact in the possession of NASA which has nine of them, each with its own technical specifications and uses.

The thermal vacuum chambers serve to reproduce the different extraterrestrial environments that materials, machines and astronauts will have to face. NASA's largest thermal vacuum chamber, Chamber A, is so large that it can be used to test entire spacecraft such as satellites. Smaller sized chambers, such as Chamber B, are used by astronauts for various types of in-vehicle simulations.

Finally, the smallest thermal vacuum chambers are used to test the individual components of aerospace engineering such as batteries.

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How the TVAC Thermal Vacuum Chamber works


We have seen that thermal vacuum chambers vary a lot in size and uses, therefore it is difficult to accurately describe the operation of the TVAC that is suitable for each device. The constants of each vacuum chamber are the extreme ranges of temperature and atmospheric pressure.

Unlike normal climatic chambers, the extreme temperatures of the thermal vacuum chamber are obtained through the use of thermal fluids, such as liquid and / or gaseous nitrogen, which are made to flow between the external and internal bodies of the machine.

The vacuum generation system consists of a set of vacuum pumps that can reach values of about 10-2 mbar in a very short time and then touch extremes such as 1x10-6.

The International Standards on the Thermal Vacuum Test


There are two bodies that regulate the specifications of the thermal vacuum chambers and the consequent tests.

The first is NASA itself which promulgates the NASA Technical Standards System, commonly abbreviated to NTSS, the oldest international space standardization system.

In 1993, on the other side of the ocean, the European Cooperation for Space Standardization was born.

The ECSS establishes safety and sustainability standards for all European Union countries with regard to the aerospace industry. Guidelines around the heat vacuum test can be found here.


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FDM Climatic Chambers

For over 70 years, FDM - Environment Makers has been producing climatic chambers of all types that are characterized by the use of the most modern technologies in the sector combined with a simple and intuitive interface that guides the operator throughout the duration of the test.

FDM technicians are always available to listen to the customer's needs to build a climatic chamber that fully satisfies him. Please contact us.

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