MEMS tackle HVAC/automatic-transmission markets
September 03, 2010 // R. Colin Johnson
MEMS startup Microstaq Inc. is pioneering promising new markets, using its micro-valve as a pilot to control the large flows necessary to tackle the lucrative heating, ventilation and air-conditioning (HVAC) markets—valued at over $60 billion worldwide by market research firm The Freedonia Group—with MEMS-control of automotive transmissions on the horizon.
MEMS microfluidic devices, such as the micro-pumps being designed by Debiotech S.A. (Lausanne, Switzerland) and the micro-valves being hawked by MultusMEMS AB (Uppsala, Sweden) can control micro-liters of fluid- and gas-flows, making them suitable for emerging applications such as medical labs-on-a-chip. Microstaq (Austin, Texas), on the other hand, uses its MEMS micro-valve technology to control conventional flow applications including HVAC and automatic transmissions on cars.
Microstaq previously announced a collaboration with Freescale Semiconductor Inc. on its intelligent refrigerant control system that employs Freescale's MEMS pressure sensors and microcontrollers—called Freescale's superheat control module—which now also works with Microstaq's novel MEMS silicon micro-valve.
The Microstaq's micro-valve is fabricated using the same silicon processing steps as an ordinary chip--layers of patterned silicon—but with micron-sized channels through which the fluid or gas flows. By using the precision MEMS valve as a pilot for controlling conventional valves, even high-flow applications can be micro-managed by MEMS, according to MicroStaq.
"Our micro-valve is fabricated from three layers of silicon, the central layer of which is a mechanical element that moves through electrically controlled thermal expansion to open and close a microfluidic port," said Nelson Fuller, vice president of research. "But we can couple that MEMS valve with a conventional spool valve—allowing a micro-valve measuring just 10-by-5-by-3 millimeters to control a conventional spool valve that can handle flows into the hundreds of liters a minute."
For the last two years, Microstaq has been advising potential customers that switching to its micro-valves can increase the efficiency of existing HVAC systems by as much as 25 percent, making the technology good for retrofits. Now Microstaq has started landing contracts to retrofit MEMS valves into commercial refrigeration systems, starting with grocery store chains.
Besides HVAC and refrigeration applications, Microstaq is also pioneering the use of MEMS micro-valves for transmissions in automotive applications. MEMS valves take up three times less space than the solenoid valves used today, enabling smaller, lighter, and less expensive automatic transmissions to be built, according to Microstaq, which is currently courting automobile transmission makers worldwide.
Cutting down on personal data leaks
August 22, 2014
Now may be the right time to cut down on smartphone data leaks and reclaim a little bit of privacy, according to Yves-Alexandre ...
Great chances and risks for sensor industry in shale gas exploration
Tools out of the 3D printer conquer car production
Trinamic's stepper motor package gets you started
Webinar: Printed circuit board test and in line automation
Apple, Samsung tablet sales decline
August 21, 2014
Global tablet shipments grew 5 percent year on year to reach 52.4 million units in 2Q14, according to market analysis company ...
MCU market on a rebound, says analyst
Is free-space wireless charging viable? Dialog thinks it’s worth a try
Schaeffler to boost electromobility by Formula E commitment
- Building Blocks for the Internet of Things
- New Linear Regulators Solve Old Problems
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
InterviewCEO interview: Tronics' Langlois makes moves in MEMS
Pascal Langlois has been CEO at Tronics for nine months. He discusses plans for the company and directions for the complex and diverse MEMS technology sector.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.