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A Look at Temperature Chamber Considerations: Power & System Components

Views: 280     Author: Kaylee     Publish Time: 2023-09-21      Origin: Site


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A Look at Temperature Chamber Considerations: Power & System Components

When shopping for a new environmental test chamber, there are a number of key factors that need to be carefully considered. Some of these factors include the chamber's size, the testing criteria, and the material selection. Another set of essential criteria that are commonly misunderstood or overlooked is the selection of appropriate components for a cooling system and the estimation of the required quantity of electrical power to carry out the tests. This largely relates to temperature chambers and provides a description of the processes and rates of change at which a device under test (DUT) can totally attain the target temperature.

You need to have a comprehensive understanding of the kind of testing you want to undertake, the devices you'll be testing, and your testing priorities in order to successfully strike the appropriate balance between these variables.

Condensers And Compressor Systems

The type of refrigeration compressor system that is utilized in the construction of a test chamber will have a role in determining, to some extent, the chamber's ability to dip below a particular temperature. Cascade and single-stage are often the two most frequently selected options. Single-stage refrigeration compressor systems are typically sufficient for achieving temperatures as low as -40 degrees Celsius. However, testing needs lower than that will require the installation of a cascade refrigeration compressor system. This is a system in which the temperature is lowered in an alternating fashion by two independent circuits, each of which has its own refrigerant. Because they are operated in tandem with one another and given time to recover from one another, the compressors put significantly less load on the system. Temperatures in the range of -75 to -80 degrees Celsius (-112 to -103 degrees Fahrenheit) are attainable in test chambers that make use of cascade refrigeration compressor systems.

Remember to inquire about the additional characteristics that the compressor has to provide for a chamber. Compressors, for example, that are sealed hermetically or semi-hermetically require extremely little maintenance over the course of their lifetimes. In addition, scroll compressors, which don't have any valves and are very efficient, should be taken into consideration for use in test chambers with a lesser amount of available workspace. On the other hand, if you want Discus compressor technology to support active live loads and enormous workspaces, you can be confident that these technologies have gotten more effective over the course of time.

Your test chamber's condenser system will have an effect, as well, on the functioning of the chamber. There are several chambers that are capable of operating with condensers that are either water-cooled or air-cooled, and the results they yield are still the same. Despite this, there are others who will recognize a difference between the two different units. The temperature of water-cooled devices may often be lowered more quickly than that of their air-cooled counterparts, despite the fact that a separate connection to conditioned water is required for these equipment. If you do not have access to a water line, your best bet is to go for an air-cooled condenser that is housed outside and is of a bigger size.

Power Of Test Chambers

The horsepower of a test chamber, also known as its operational power, is a strong indicator of how quickly DUTs will be able to attain the desired temperature. It might make perfect sense to look for the most powerful chamber that you can buy, but in reality, it's not that simple.

In order to carry out accurate testing, the DUT has to be brought up to the specified temperature on a consistent basis. Anyone who has ever cooked a Thanksgiving turkey knows that the turkey does not heat up all at once when placed in a heated atmosphere; rather, the heat originates on the object's outer layer and gradually moves into the object. This also applies to every piece of equipment that needs to be tested.

During this heating process, the DUT is exposed to some heat from its surroundings and absorbs some of that heat. In order to compensate for the heat that is lost in the workspace and to maintain the heating process, the testing chamber needs to make use of a certain quantity of electricity so that it can continually draw air into its intake, reheat it, and then push it back into the workspace through its fan.

Not Every Device One Attempts To Test Will Need The Same Amount Of Power To Keep This Process Running.

It is dependent on the constituent elements of the DUT. For instance, steel takes in heat at a slower rate than plastic does. It is essential to have a solid understanding of the make-up of the DUT as well as the weight of each individual component in order to accomplish the ramp rates you have envisioned. After that, you are able to discuss this matter with the manufacturer of your chamber.

We recommend that you discuss this matter with both the sales team for the test chamber and the internal team that you have. Doing so will ensure that you have the most accurate information possible regarding your products. A chart that details the absorptivities of various common materials can be found in this location.

As A Result, The Devices You Plan To Test The Most Will Determine The Appropriate Power Your Test Chamber Needs.

If the devices you intend to test are known to have a low absorptivity, then it is not necessary for you to spend more money on a chamber that has greater power, despite the fact that it may seem appealing to do so. In this situation, a chamber with a lower power output would be sufficient and would save you some money.

On the other side, you might go for a chamber that is not as powerful but costs less money and has less features. Even if on the surface this appears to be a cost-effective choice, it is possible that in the long run it will end up costing you more because your electronic devices have high absorptivities. As a result of the fact that these devices will soak up heat at a rate that is greater than the chamber's capacity to reheat the air and circulate it, it is possible that it will take several hours, or perhaps several days, longer for you to successfully heat your devices and complete your testing.

When time is of the essence, longer testing schedules may end up costing you more money in the long run than the original purchase of a more powerful chamber would have.Because the correct reaction is so highly dependent on the particular testing needs that you have, it is really necessary to communicate your objectives to the person who is building your chamber. The best manufacturers won't try to convince you to purchase an extravagant chamber with features that may or may not be appropriate; rather, they will seek to provide a solution that is tailored to meet the specific needs of its customers.

For instance, all of the floor models for our test chambers now incorporate the four basic change rate categories that are offered by Associated Environmental Systems. These categories include thrust, impulse, warp, and hyperdrive. In addition, we are willing to work with you to design a bespoke chamber in the event that the specifications of your tests do not correspond to any of the models in our existing product selection.

Hongjin is here to ensure that you have the capacity, speed, and size necessary to perform the tests that are necessary for your requirements, regardless of what those requirements may be. Get in contact with us right away and tell us how we can best assist you in optimizing your testing procedures so that you can save time and money.

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