Case Studies-70W TEC heat sink thermal solution
We will use professional thermal analysis software to design the optimal scheme for customers, then confirm the feasibility of the theory with engineers, and then start to make samples for testing
70W TEC heat sink thermal solution
Project Details
Customer:
Medical manufacturer
Application:
Medical equipmentindustry
Technology:
Liquid cold plate
Thermal power type:
TEC cooling
Location:
US
Intruduction
As a special field in the medical industry, the precision of electronic components is very important, so the heat sink of components is very important, even a key component. In particular, for the TEC refrigeration program, both extremely cold and extremely hot will have an impact on the equipment, especially the phenomenon of ice accumulation or water accumulation at low temperature. Therefore, our engineers carefully and seriously consider these problems when designing such projects.
The Thermal Solution
Designed requirements
IThermal power: 70W
Al block : 100*100*8mm
Liquid cold plate :120*140*12mm
Liquid water speed : 2L/min
Environment 25℃
The Max temperature of Al block surface is below 30 ℃
The temperature difference of the same chip type is about 2 ℃
Simplified model and heat source in Pro/E
Parameter setting and meshing are in the software,The number of meshes is 418847
Set uniform mesh params
Mesh assemblies separately
Allow multi-level meshing
Allow minimum gap changes
To solve the function calculation equation, make each curve function equation convergent based on the set parameters
After the software is run, the air volume pressure is obtained, so as to determine a reference value for the fan resistance impedance in the later period
Also, after the software is run, the speed of the air volume is obtained, so as to determine a reference value for the later fan air volume
After calculation, the temperature distribution diagram of the heat source within the range of the set module is obtained, and then the engineer can optimize it.
Results
Our engineers use detailed data and accurate meshing CFD software for calculation. By constantly adjusting the data module, heat pipe position, and thickness and spacing of heat sinks fins, we finally designed a heat sink scheme meeting the requirements for the customer. Meanwhile, we have made sample testing and mass production. However, the heat pipe heat sink should be noted that in extreme environment, the liquid inside the heat pipe is easy to freeze and then expand. Used the simple model method, the result will be different from the actual module. The Max temperature of Al block surface is below 29.6℃,△T=64.8-40=24.8 ℃
