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|  A typical PCHP furnace (as illustrated in the sketch below) consists of four major components that can be physically detached from each other:
 Typical PCHP Furnace
Principle of Operation: Unlike a conventional heat pipe that is hermetically sealed, the vapor space of the annular heat pipe in the PCHP furnace is connected to a helium gas reservoir. The control system for the helium pressure consists of a pressure transducer, a helium supply and a vacuum pump. The pressure is maintained constant by admitting or removing helium. Series of pressure transducers and solenoid valves are typically used. The power input to the furnace is controlled by a temperature controller whose set point is coupled to the pressure control system.
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| Data collection and commands are performed by a computer equipped with special software. Constant helium pressure translates into constant vapor pressure and temperature inside the heat pipe. The precision of the temperature control can be an order of magnitude better than that of the pressure control. Spatial temperature uniformity of better than 10mK has been measured. Applications:
Specifications:
Design Advantages:
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  Contact and Visit ACT Information ISO 9001:2000 and AS 9100-B Certification ACT Brochures and Product Datasheets
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