Freescale, Microstaq join forces on “revolutionary” MEMS superheat control

January 24, 2008 — Freescale Semiconductor and Microstaq are collaborating on development of an intelligent refrigerant superheat control system that combines Freescale’s MEMS pressure sensing, processing and control technology with Microstaq’s MEMS silicon expansion valve (SEV).

These compatible high-pressure, high-flow solutions are designed to improve HVAC and refrigeration system energy efficiency and reliability, while also enabling predictive system maintenance, the companies announced in a news release.

Freescale’s advanced superheat control module is engineered to operate with HCFC and HFC refrigerants including R410A, R407C and R22. Microstaq’s high-pressure, high-flow silicon MEMS valve technology is capable of working with any refrigerant in an extremely compact package. The module is compatible with virtually all air conditioning, heat pump and refrigeration applications.

“Microstaq’s silicon valves measure only 6 X 10 mm and consume a fraction of the power of conventional solenoid or stepper motor designs while providing closed-loop control and higher accuracy,” said Sandeep Kumar, Microstaq’s president and CEO. “Our intelligent MEMS silicon expansion valves will revolutionize the flow control industry in the same way digital light processing (DLP) MEMS changed the display world.”

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