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The System Components And Power To Take Into Account For Temperature Chamber

Views: 288     Author: Kaylee     Publish Time: 2023-11-22      Origin: Site


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The System Components And Power To Take Into Account For Temperature Chamber

Purchasing a new environmental test chamber requires the careful consideration of a number of key factors, including size, testing requirements, and materials. Other important considerations that are often misunderstood or overlooked are the optimal components of the cooling system and the level of power required for your testing needs. This is most relevant for temperature chambers and refers to the mechanisms and change rates at which a device under testing (DUT) can be fully brought to the desired temperature.

Effectively weighing these considerations will require a comprehensive understanding of the type of testing you’re looking to conduct, your priorities in that testing, and the devices that will undergo testing.

Small Constant Temperature And Humidity Test Chamber

Compressor Systems And Condensers

A test chamber’s ability to reach certain low temperatures will depend partially on the type of refrigeration compressor system it is built with. The two most common options are single-stage and cascade. Single-stage refrigeration compressor systems are typically sufficient to reach temperatures as low as -40ºC. Testing requirements below that, however, will necessitate the use of a cascade refrigeration compressor system, in which two independent circuits with their own refrigerate take turns bringing the temperature progressively lower. By working the compressors in tandem and allowing each time to recover, this system reduces strain on the system. Test chambers making use of cascade refrigeration compressor systems, therefore, can reach temperatures as low as -75 to -80ºC (-103 to -112°F).

Be sure to inquire about additional characteristics of a chamber’s compressor as well. Hermetically and semi-hermetically sealed compressors, for instance, require almost no maintenance. Moreover, scroll compressors, which lack valves, are highly efficient and should be considered for smaller test chamber workspaces. Should you instead require Discus compressor technology to accommodate active live loads and large workspaces, you can rest assured that advancements in such technology have also improved their efficiency.

The condenser system in your test chamber will also influence its performance. Some chambers can operate on either air-cooled or water-cooled condensers and achieve the same performance. Others, however, will see a difference in the two units. Water-cooled units, often, bring down the temperature at a faster rate than their air-cooled counterparts, but require a dedicated conditioned water line. If you don’t have access to a water line, larger, external air-cooled condensers are effective options.

Power Of Test Chamber

In order to accurately forecast how quickly DUTs will be able to attain the desired temperature, it is helpful to consider the horsepower, which refers to the operational power of a test chamber. Despite the fact that it seems make sense to search for the most powerful chamber that you can buy, doing so is not actually that simple.

For testing to be carried out correctly, the device under test (DUT) must be brought to the desired temperature in a continuous manner. When an object is placed in a heated atmosphere, it does not heat up all at once; rather, heat begins on the outer layer and gradually moves within. This is something that anyone who has ever cooked a Thanksgiving turkey is aware of. For any piece of equipment that you are required to test, this also applies.

The DUT absorbs part of the heat that is present in its environment throughout the course of this heating process. It is necessary for the test chamber to make use of a particular quantity of power in order to continually draw air into its intake, reheat it, and then push it back into the workspace through its fan. This is done in order to compensate for the thermal loss that occurs in the workplace and to ensure that the heating process continues.When it comes to maintaining this process, the quantity of power that is required varies based on the object that is being evaluated.

In accordance with the constituent parts that make up the DUT: Plastic, for instance, has a different ability to absorb heat than steel does. As a result of this, it is essential to have a thorough understanding of the composition of the DUT as well as the mass of each component before getting in touch with the manufacturer of your chamber to discuss the possibility of obtaining the right ramp rates.Despite the fact that we strongly recommend that you discuss this matter with both your internal team and the sales staff of the test chamber in order to ensure that you have the most accurate information possible regarding your products, you can find a chart that lists the absorptivities of popular materials here.Because of this, the amount of power that your test chamber requires will be determined by the technological devices that you intend to test the most.

Large Constant Temperature And Humidity Test Chamber

Although it could seem alluring to spend more money on a chamber with more power, you won't need it if the gadgets you plan to test are known to have low absorptivity. In this scenario, a lower power chamber would work just fine and save you money.

On the other hand, you might wish to go with a less expensive chamber that has less power. Even if on the surface this seems like a cost-effective option, if your gadgets have high absorptivities, this could also wind up costing you indirectly. It may take hours or even days longer to properly heat your devices and finish your testing because these gadgets will absorb heat more quickly than the chamber can reheat and circulate the air.

Furthermore, longer testing periods may wind up costing you more in the long run than the initial cost of a more potent chamber when time is of the essence.Given how much the correct response depends on your unique testing requirements, it's critical to let your chamber maker know exactly what you plan to test. The finest manufacturers will try to locate a solution that suits your particular set of needs, as opposed to pressuring you to buy a more costly chamber with maybe inappropriate capabilities.

For example, all of our test chamber floor models now include Hongjin Environmental Systems' four standard change rate categories—Thrust, Impulse, Warp, and Hyperdrive. Additionally, we will collaborate with you to create a custom chamber if your testing specifications do not align with our current model lineup.

AES is here to make sure you have the ideal mix of capacity, speed, and size to execute the tests you require, regardless of your needs.Tell us how we can help you maximise your testing operations by getting in touch with us right now.

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