Breaking News
Comments
Newest First | Oldest First | Threaded View
nhawryluk
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
nhawryluk   10/25/2011 9:31:00 PM
NO RATINGS
I have seen these work. They are efficient. I would like to have some cubic in of air per $ figures compared to fans. My biggest question is the vibration frequency, resonance and harmonics. What kind/how much structure borne noise is generated. Do these have to be isolated fromt he chassis to prevent SBN transfer?

GREAT-Terry
User Rank
CEO
re: Piezoelectric fans and their application In electronics cooling
GREAT-Terry   7/5/2011 4:41:59 AM
NO RATINGS
The question is whether such a movement of air can carry heat away from the target better than a rotational fan. More data should be shown. I also agree with katgod that the vibration stuff tends to break over time. How reliable this kind of fan can be?

Gayatri Kumar
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
Gayatri Kumar   6/12/2011 10:42:35 AM
NO RATINGS
Intresting to know how the sound is suppressed when it is vibrating. Wind is constant motion of air a particular direction. How this back and forth movement is imparting force on air particles in one direction only ?

Bob Lacovara
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
Bob Lacovara   6/8/2011 4:08:22 PM
NO RATINGS
PZ operated devices aren't new, nor are fan applications. For all sorts of interesting stuff, see the "Measurements Specialties" site. One of the interesting characteristics of piezo materials is that they tend to be voltage-operated. Another is that both "stiff" devices (lithium tantalate) and "flexible" devices (polymer piezo) materials are widely available. Ultrasonic transducers have been made for decades with both types. Now, some questions: how much power per how much air moved? And what is that ratio for a conventional rotating fan? How do they do for weight? Would like to see some numbers.

katgod
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
katgod   6/8/2011 3:02:59 PM
NO RATINGS
The part that is bending seems destine to break, I wonder what the longest duration for one of these fans with a reasonable output has been?

prabhakar_deosthali
User Rank
CEO
re: Piezoelectric fans and their application In electronics cooling
prabhakar_deosthali   6/7/2011 3:12:56 PM
NO RATINGS
This invention, when developed fully may lead to what would be called as static fans, fans without any rotating parts. And that kind of a thing would a revolutionary one , just those pulsating blades of your ceiling or a table fan!

inakito
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
inakito   6/7/2011 7:12:26 AM
NO RATINGS
It may work but a very smart power consumption of chip to be cooled. Fan shold have a inteligent control (not always on) and an storage energy for fan may be needed.

agk
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
agk   6/6/2011 11:13:15 AM
NO RATINGS
By reading this article i remember my hand fans. Whenever there is a power cut we use hand fans now and then. This device can replace hand fans if these prove to be highly energy efficient.

_hm
User Rank
CEO
re: Piezoelectric fans and their application In electronics cooling
_hm   6/6/2011 3:28:28 AM
NO RATINGS
This is a good concept. But cooling may not be proper application. It may be useful for other applications.



Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

The Best of the Best Videos on YouTube
Max Maxfield
4 comments
A couple of days ago, my chum Paul was visiting me in my office. He'd wandered over from his cubicle in the next bay to take a brief coffee break. This week, Paul had been admiring the ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...