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Freescale, Microstaq team on superheat control for HVAC

Posted: 24 Jan 2008 ?? ?Print Version ?Bookmark and Share

Keywords:MEMS? control system? HVAC?

Freescale Semiconductor and Microstaq have partnered to develop an intelligent refrigerant superheat control system that combines Freescale's MEMS pressure sensing, processing and control technology with Microstaq's MEMS silicon expansion valve. The high-pressure, high-flow solutions are designed to improve HVAC and refrigeration system energy efficiency and reliability, while enabling predictive system maintenance.

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

"Microstaq's silicon valves measure only 6mm x 10mm 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.

The combination of both companies' technologies address the ultra-space and energy conservation needs for the growing HVAC market, which exceeded $10 billion in 2006 and is forecast to approach $13 billion in 2011, according to ARC Advisory Group.

In addition, Freescale and Microstaq's device combination has versatile features to help meet global air conditioning and refrigeration application requirements including higher energy efficiency for HVAC systems without contributing to ozone depletion or global warming. It also enhances heat pump performance and enables low maintenance and a high level of reliability

Target applications include residential and commercial air conditioning, residential and commercial heat pumps, and commercial and transportation refrigeration.

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