Vacuum Chamber use in Solar Energy Research

Vacuum Chamber use in Solar Energy Research 01
Vacuum Chamber use in Solar Energy Research 01
This vacuum chamber was built to perform Solar energy research on Photovoltaic Cells. We had some constrains with regards to the outside dimensions of the chamber. As you can see, it could not be too tall because it had to fit into our clients assembly jig. We therefore removed our standard lid handles and machined the handles themselves right into the acrylic chamber lid. Concurrently, we also removed our 3-Port Plate that houses the vacuum valve, the venting valve, and the vacuum gauge and moved each of them to the side wall of vacuum chamber. Finally, a way to connect electrical signals and power to the interior of the vacuum chamber from the outside, while the Solar Cell is under vacuum, was to provide an electrical feedthrough. This electrical power feedthrough was placed on the opposite wall of the vent valve, vacuum valve, and vacuum gauge.

As you can tell, there is a square and large window made from Quartz Glass coupled to the lid. The reason Quartz was used is because acrylic has limiting optical transmission properties - it does not transmit light at all in the Ultra Violet spectrum. Most of the time, this is not critical; however, in some applications, such as photovoltaics and solar power research, the transmission properties of the vacuum chamber wall become vital. Keep in mind that Ultraviolet Transmitting Acrylic does exist, but in our situation, it was not cost effective, and it did not provide replacement options.

You can read more about Ultraviolet Transmitting Acrylic Here: Optical Transmission Properties of Acrylic

One of the advantages is also the option that our client has to remove the 6 inches by 6 inch Quartz Window and replace it with any other material with various optical transmission properties. All that needs to be done is loosen the bolts that are fastening the Window Holding Plate, made from 6061 Aluminum, remove it, remove the Glass, and replace this viewport with another Window made from a different material with different optical transmission properties such as Sapphire Glass, Borosilicate, Pyrex, etc.

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Vacuum Chamber and Pump Systems
Our Vacuum Chamber and pump systems are fully setup and ready to go. What you get is a vacuum chamber, a vacuum pump, and connection hardware. We carry acrylic or metallic vacuum chambers and a whole range of vacuum pumps from Rotary Vane, Piston, or Venturi. What type of vacuum chamber and pump system you want depends on your project requirement, budget, and other specifications.
D-SUB Vacuum Feedthroughs
D-Sub Vacuum Feedthroughs are universal connectors that enable you to connect from the outside towards the inside of your vacuum chamber. We carry a large list of D-subminiature connectors for your vacuum applications such as the 9 pin, 15 pin, 25 pin, 37 pin, and 50 pin or a combination of any described.
Our Work: Vacuum Storage of Chemicals that interact with Stainless Steel
There are countless chemicals and metals that interact with Steel or Stainless Steel. According to our investigation, Gallium, Cadmium, Beryllium, and Zinc are some examples of materials which will interact with Steel or Stainless Steel during vacuum Storage.
Related Articles: Vacuum Levels of Acrylic Vacuum Chambers
In this article we will discuss the vacuum levels of an acrylic vacuum chamber. This article also covers the leak rate or the leak tightness of the acrylic chamber. Additionally, we are going to recommend a rule of thumb used for vacuum pump selection based on the size of the vacuum chamber.