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Product Load’s Type for Lenpure® Climatic Chambers


How much space do I need around my product? Many MIL-Standards specify approximately 1/3 product and 2/3 empty space around your product for adequate air flow. This may slightly vary with the design of the chamber. 
 
In some custom chambers, the work area is effectively an air duct and is almost 100% filled with product. Again, this is another area underlining the importance of the chamber manufacture understanding as much as there is to know about your product and test objectives. 
 
Static (Dead) Load 
 
The static load is any mass that is in the chamber that does not produce added heat. In order for LENPURE to size the correct system to meet your needs, we have to determine the dead load mass of the DUT along with any shelving, fixturing, etc. We would also need the type of material the DUT is made of to determine the specific heat. 
 
This will determine how easily your DUT gives up its heat during transitions from hot to cold and helps us accurately size the refrigeration system to meet your specific performance requirements.
 
Live Load 
 
The live load is any mass that is in the chamber that produces heat. Any live load that is in the chamber will have to be measured (watts) to determine the correct refrigeration system to overcome that added load. 
 
·What is your maximum dead load? 
 
·What is your maximum live load?
 
·What type of material is your DUT? 
 
·How many shelves would you be using to support your DUT? 
 
·Do you have any fixtures to mount your DUT? 
 
The more information that you can supply to the manufacturer will assure that your chamber will meet your specific application's requirements with a system that is not oversized, which can have a significant impact on price.