Not recognizing the brand name, I'm at somewhat of a loss. If that thing is what it looks like, air in, one side sorta hot, other side sorta cool, they were used in the steel mill to protect(?) electrical cabinets from high temperatures(orange hot) by providing cool air ventilation.
For the home shop? An interesting experiment with the physics of air movement. Not much else. They are very expensive loads for compressed air. Think air conditioning for a cubic foot. For cooling, a "Pelteir Junction"(diode thermopile) is much more effective, and far more efficient.
.