An environmental space , also called climatic chamber or climatic chamber , is a cage used to test the effects of certain environmental conditions on biological items, industrial products, materials, and electronic devices and components.
Such a space can be used:
- as a stand-alone test for environmental effects on test specimens
- as preparation of test specimens for further physical testing or chemical tests
- as an environmental condition to perform specimen testing
Video Environmental chamber
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The environmental test chamber artificially replicates the conditions for which machinery, materials, devices or components may be exposed. It is also used to accelerate the effects of exposure to the environment, sometimes under unexpected conditions.
Room testing involves testing and exposing the product to a variety of environmental conditions in a controlled setting. Climate Chamber Testing and Thermal Shock testing are part of space testing. Climate Chamber Testing is a broad term used to describe various ways of simulating the climate or exposure of excessive ambient conditions to a product or material under laboratory-controlled but accelerated conditions. On the other hand, Thermal Shock testing is used to simulate how the material will react when exposed to changes in extreme climatic conditions, such as going from very cold to very hot conditions in a very short time (usually only a few seconds).
These conditions may include:
- extreme temperatures
- sudden and extreme temperature variations - thermal shock
- heights
- relative humidity or humidity
- electrodynamic vibrations
- electromagnetic radiation
- Cyclic corrosion test
- salt spray
- rain
- weathering
- exposure to sunlight, causing UV degradation
- vacuum
Produced samples, specimens, or components are placed inside the chamber and subjected to one or more of these environmental parameters to determine the reliability or measure after effects such as corrosion. In the case of engines such as internal combustion engines, by-products such as emissions are monitored.
The environmental space can be a small room that is used both to condition test specimens and to perform tests. This could be the smaller unit used for conditioning test items. Also, some spaces are small enough to be placed into a universal test machine or other test equipment.
Many rooms are arranged on a set of certain conditions. Others can be programmed to cycle through the order of certain conditions.
Maps Environmental chamber
Design
Because the testing requirements may be relatively simple or complex, the environmental test chambers vary greatly in size, ranging from small units designed for placement on benches to large walking spaces. Testrooms generally have a viewport or video feed to allow visual inspection of samples during testing. The reach-in space provides an opening that technicians may use to handle test samples. Spaces that provide interior visual lighting must take into account the resulting heat and appropriate compensation.
As well as wide variance in size, a number of user control options are available, ranging from simple analog indicators to more modern digital readings with LCD screens. Chambers can be programmed computers, and network test rooms or Web-enabled are also available.
Type of test room
- Test room is mechanically cooled
- Cooled liquid nitrogen test chamber
- Modular Walk-in Chambers
Standard test space
Some standard organizations provide standards and guidance on the construction of environmental test chambers, temperature control standards, and engineering tolerances.
- Institute of Environmental Science and Technology
- Air Conditioning, Heating, and Refrigeration Institute (formerly American Refrigerant Institute)
- American Society of Heating, Refrigerating, and Air-Conditioning Engineers Air Conditioning # American Society of Heating, Refrigerating, and Air-Conditioning Engineers
- ASTM International
- Underwriters Laboratories
- NSF International
- Global FM
- Canadian Standards Association
- International Organization for Standardization
- MIL-STD-810, "Standard Test Method for Environmental Engineering Considerations and Laboratory Testing", currently (2010) G version, published in 2009
- IEC 60068, "Environmental Testing", with many parts.
See also
- Cyclic corrosion test
- Salt spray test
- Environmental stress crack
- Doriot Climatic Chambers
- accelerated aging
- Environmental stress screening
- Environmental stress fracture
- MIL-STD-810, DoD Standards for Environmental Engineering Considerations and Laboratory Tests
- The shelf life
- Standard conditions for temperature and pressure
- Thermo-mechanical fatigue test
- Universal testing machine
- Weather testing of polymers
- Stabilizers for polymers
References
Source of the article : Wikipedia
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