Posts by hchu 



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thermocouple 
Direct to the point on how to measure the temperature of a wire u... 

speed of centrifugal fans 
If you are talking about the commercially available fans, in addi... 

Which computer company builds the best workstation??? 
I used to work at HP on Intel based high performance network serv... 

Which computer company builds the best workstation??? 
Celeron is not slower just because of the FSB; it doesn't have an... 

pressure required in order to flow a certain rate through a given... 
In a nut shell: the equation on pressure drop for a well develope... 

Heatsink size calculation 
thermal resistance is the inverse of the coefficient in front of ... 

Carbon Fiber Properties 
Carbon fibre composite structures typically do not have isotropic... 

Heatsink size calculation 
27W is a lot of heat to dissipate in a TO220 package, besides he... 

Aluminum extrusion tool 
For aspect ratios of 20 or 30, extrusion is not the ideal candida... 

Thermal resistance of bolted interface (aluminum, vacuum) 
Dr. Seri Lee has published a lot of paper on this topic. I don't... 

Thermal conductivity, Aluminum and Copper 
The units W/mK and W/mC are the same. Can you clarify what do ... 

Corrosion between aluminum and copper 
You might want to plate the aluminum, such as nickel plating. 

Material Properites, FR4 
The thermal conductivity behavior of a composite material like PC... 

Skin/wall temperature calculations 
If assuming the following,
1. Uniform surface temperatures on ... 

Energy question 
If I understand your question correctly, that is why does water e... 

Fan selection for boilers and Pressure loss in ducting 
The most obvious consideration is the airflow vs. pressure perfor... 

Software, heat transfer through composite walls 
All most all of the thermal software out there can do composite w... 

simple heat transfer, time to reach equilibrium 
Instead of the steadystate Newton's Law of Conduction, you need ... 

Thermal energy 
The conversion is
1 Btu/hrft^2 = 3.154 W/m^2 

final year project (design of crossflow plate type heat exchange... 
The following reference is the bible for compact heat exchanger d... 

Strange unit found: U/min 
Ebm is a very well know German fan/blower manufacturer. Its fans... 

Strange unit found: U/min 
2800 sounds like an RPM number. Typical rotational speed for tub... 

Principle of impingment freezing 
Hi Mr. Duong,
You can reach me at sdthermistor@yahoo.com.


Lanthanum Aluminate 
Here is a manufacturer of lanthanum aluminate, Superconductive Co... 

Principle of impingment freezing 
Impingement cooling is an effective way in providing localized co... 

