March 2007

Whilst Environmental Test Chambers interfaced to Shakers are certainly nothing new, a recent development deserves some attention.

TAS were approached by a customer wishing to ‘shake & bake’ hazardous materials and as such, wanted to limit the surface temperatures within the chamber.

Rather than use conventional heating elements, whose surface temperatures can become dangerously hot for this application, TAS developed a Hot Gas Heating System utilising waste heat from the mechanical refrigeration plant.

Hot, or more correctly warm refrigerant gas is often used for defrosting frozen evaporator coils in commercial applications and even in many ‘frost free’ domestic freezers.

However, the TAS system can heat the chamber to +90°C and reduces energy consumption as an added bonus.
 
Other more standard features on this Chamber are a removable floor and a pressure relief panel in the ceiling. The temperature range is +90°C to -75°C with humidity from 10 to 98%rh, fully programmable and with an internal volume of 870 litres.