|
THERMAL COOLING WEB LIBRARY
©
|
|
|
|
|
ACOUSTICS
Adding fans to a system increases the cooling but can creat a noise problem.
|
Bruel and Kjaer make products to measure sound and vibration. |
| ( go back to Index ) |
BLOWERS / FANS / FILTERS
Suppliers of and Information about cooling fans, CPU fans, and cooling systems.
|
- Nidec Cooling Fans and Blowers. Nidec is known worldwide for their cooling fan technologies. Go here for their web page.
- Here you can find fans from NMB
and data about system design considerations, system impedance, measuring air flow and static pressure, system operating point and ducting recommendations, selecting a fan, and multiple fan use, and much more.
- Here you can find data on AC and DC Fans from SUNON.
- Check here for information about Fans from Delta Electronics.
A major OEM supplier.
- Look here to find data about Sanyo Denki Fans and
CPU cooling fan selection.
- For information on Comair Rotron Fans check their Product Data Sheet, and their Engineering Notes covering topics such as: Air Flow vs Pressure, Acoustic Noise, Life & Reliability, Monitoring Fan Performance, Fault-Tolerant Fan Systems, and Controlling Fan Speed.
For larger systems, take a look at Kooltronic's Product Selection and Design Guide
for data on rack and enclosure fans and blowers. EBM makes a complete line of fans and blowers. Check here for information on fans and blowers built by McLean Engineering. Fandis S.p.A. is an Italian company that provides a wide variety of electronic cooling products, including fans, blowers and filters. ADDA USA has been manufacturing electronic components for over 23 years. These components include AC/DC Brushless cooling fans, blowers, and CPU coolers (fan/heat sink combinations), among others. |
| ( go back to Index ) |
COLD PLATES AND HEAT SPREADERS
These can be used for attaching multiple thermoelectric or other cooling devices to a single device.
|
Melcor
has data on their Cold Plates and Heat Spreaders. Check here for data on TECA
ThermoElectric Cooling America Corporation's Liquid Cooled Cold Plates. Lytron
has information on a full line of thermal cooling devices and has data on cold plate selection.
|
| ( go back to Index ) |
CONVECTIVE HEAT EXCHANGERS
These would commonly be used in large systems with high heat flow rates or used as components in custom designed cold plates or chillers.
|
- Exergy Inc
has a line of miniature shell and tube and tube in tube heat exchangers.
|
| ( go back to Index ) |
ENCLOSURES
For long life a proper enclosure for electronic equipment must supply not only clean dust-free air but also be designed to keep the electronics cool.
|
Integration Technology Systems (ITS) has data on their ICE/STATIONS
and NET/STATIONS enclosures for Rack, Standup and Desktop electronic packages.
Here is a good article "Fan cooled enclosure analysis using a first order method" from Electronics Cooling Magazine.
Check here for a line of packages and enclosures from the ZERO Corporation.
Telenet Systems Solutions has information here on their Rackmount, Workstation and Stand Up server enclosures. Click here to look at enclosures manufactured by Rittal. |
| ( go back to Index ) |
HEAT/AIR FLOW MODELING
Computational Fluid Dynamics is a tool used for thermal analysis.
|
Flotherm is the software used for all of the modeling at ECS. It is a powerful tool for predicting airflow and heat transfer in electronic systems. Innovative Research Inc. is a company which offers software and consulting services in the area of computational fluid dynamics. Coolit is a company specialized in software for computational fluid dynamics. Ansys is a company which produces software to solve a variety of engineering problems, including ANSYS/FLOTRAN, which is a computational fluid dynamics software. |
| ( go back to Index ) |
HEAT PIPES
A type of Phase Change heat exchanger. Depending on the liquid/gas and pressure in the sealed device the heat pipe can be made to operate at various temperatures and heat flows.
|
Noren Products Inc. Fujikura America Inc. and Thermacore International Inc.
are manufacturers of heat pipes. |
| ( go back to Index ) |
HEAT SINKS / FINS / EXTRUSIONS
A good way to keep electronic components cool is to add a heat sink. Heat sinks are usually made by extrusion. Heat sinks can be broken up into two categories; active and passive. Active heat sinks have fans attatched to help improve cooling. Passive heat sinks are designed to operate without a fan attached.
|
These companies all manufacture passive heat sinks: Advanced Thermal Solutions, Du-all Thermo, ERM,
The Metals Group Inc. R-Theta. Here are some companies that manufacture both active and passive heat sinks: Chip Coolers, iREC, PSC, Wakefield. These companies also manufacture heat sinks: Cambio International, ThermFlo, and YTS. |
| ( go back to Index ) |
LIQUID COOLING
When the power density of electronics gets too high, it may become necessary to use liquid cooling.
|
For more information on liquid cooling, check out Lytron; they are also involved in Heat Exchangers, Cold Plates, Oil Coolers & thermal management solutions!
|
| ( go back to Index ) |
OVERCLOCKING AND COOLING
Overclocking can be used to boost the performance of electronics, but the added heat can have a negative impact on MTBF. Proper cooling is necessary to maintain system reliability.
|
|
| ( go back to Index ) |
PHASE CHANGE COOLING
When a material changes phase, it absorbs or releases energy. This can be used for cooling.
|
|
| ( go back to Index ) |
TEMP / FLOW SENSORS
Accurate measurements of temperature and airflow is important toward analyzing the effectiveness of cooling in a system.
|
Our air velocity and temperature measurements are done by Cambrige Accusense ATM-24 sensors.
Our temperature measurements are done by THERM-X of California and Omega. Airflow Technical Products. is a worldwide company that produces airflow measurement equipment. Advanced Thermal Solutions. build velocity sensing products. |
| ( go back to Index ) |
TEST LABS
Test labs provide chambers which keep ambient temperature, humidity, and altitude at a specified value.
|
Quanta Laboratories
is an environmental testing laboratory which offers many services ranging from thermal tests to vibration tests. |
| ( go back to Index ) |
THERMAL ADHESIVES
Thermal adhesives are thermally conductive materials, mainly used for attached heat sinks to electronics
|
Loctite is a non-conductive material used to epoxy thermocouples to chips, heat sinks, etc. Diemat Company and Epotek are two companies that make thermal adhesives. Diemat makes themally conductive epoxies and powders. Epotek specializes in epoxy technology. AI Technology Inc. makes many types of thermal interfaces, including thermal epoxies for attatching heat sinks, thermal pads, gels and grease. |
| ( go back to Index ) |
THERMAL INTERFACES
To get good thermal conductivity between two surfaces, such as a heat sink and a processor, you need thermally conductive material. This usually is in the form of tape, epoxy, or grease. Tape and epoxy have the added advantage of being able to hold the heat sink in place. Grease is not an adhesive of any kind, therefore the heatsink needs to be mechanically held in place.
|
3M
and Raychem are two companies which manufacture thermal tape. Thermalloy and Thermoset are some companies that manufactures thermal grease. Thermal grease is usually placed between heat sinks and electrical components to improve the thermal path between them. Thermal tape and thermal grease can also be bought from Bergquist, Chomerics, Power Device,
and Thermagon Furon has a complete line of thermal interface materials. check out their website for an explanation of why thermal interfaces are important. |
| ( go back to Index ) |
THERMOELECTRIC COOLING
Thermoelectric cooling provides precise thermal management of electronics. This increases the reliability, an thus the system MTBF of a product.
|
Some companies that produce thermoelectric coolers are Tellurex, Teca, Ecold, Melcor,
and Marlow Industries Inc. -
Fandis S.p.A. is an Italian company that produces and sells custom thermoelectric coolers.
|
| ( go back to Index ) |
VORTEX TUBE COOLING
Vortex tubes convert a stream of compressed air into two streams of hot and cold air. The cool air can be used for cooling.
|
Arizona Vortex Tube Manufacturing Company
produces vortex tubes. |
| ( go back to Index ) |
WIND TUNNELS
These are used for measuring fan/blower performance, system flowrates, and airflow impedance curves.
|
The wind tunnel that we use was made by Airflow Measurement Systems. Dwyer Instruments Inc. make manometers which are used to measure the pressure drop across the windtunnel. |
| ( go back to Index ) |
DISCLAIMER: This web site is not responsible for the content at any of the external
sites that we link to and therefore does not necessarily endorse them.
|
