Heat Pipes  
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   High Performance Heat Sinks

 
   Extruded Heat Sinks  
   Chipset / CPU Coolers
   Heat Pipes  
   Power Heat Pipe Assembly  
   Low Profile Heat Pipe Assembly  
   Thermoelectric Cooling Modules  
   Heat Pump (TECM) Assembly  
   Stamped Heat Sink / Product  
   

Performance of Heat Pipe

  
 

 
  A heat pipe is essentially a closed, evacuated tube lined with a porous structure called "wick structure". The wick is saturated with a proper amount of working fluid (typically water). When a portion of the heat pipe is exposed to heat
  • The fluid in the heated portion vaporized (picking up thermal energy)
  • The vapor flows to the cooler portion of the container
  • The vapor cools and condenses (releasing thermal energy)
  • Condensed fluid is returned by capillary action to the hotter portion  

This thermodynamic cycle continues as the thermal energy is transferred from one end to the other. It is noted that the temperature will remain constant as the working fluid goes through the phase change inside the heat pipe chamber. This phenomenon makes the heat pipe a very efficient heat transfer device.

Heat pipes are totally passive heat transfer systems which having no moving parts to wear out, and they require no electrical energy to operate. They offer the design engineer low cost packaging and flexibility because they can be manufactured in a number of shapes and sizes. Their light weight and compact size also make them the ideal choice for space-constrained applications.

  
    Specifications and Features  
 

ITEM SPECIFICATION
Shape Round D: f 3 ~ f 10   +/- 0.1 mm
Flat t: 1.2 ~ t: 3.0  +/- 0.1 mm
Length 80 ~ 350      +/- 1 mm
Material of Container OFHC
Working Fluid Pure H2O
Max. Heat Transfer Rate 0 ~ 100 W
Fail Temp
(No Cooling)		 Round > 320 oC Leakage
Flat > 140 oC Leakage
Thermal Resistance (a) 0.02 ~ 0.9 oC/W
Life DT   (b) < 2.0 oC
Inclination Any direction
Flexibility Curvature Rc=>9.5 mm
Guaranty 5 years






 
  • High heat transfer rate
  • Quick thermal response
  • High thermal uniformity
  • No power needed
  • Small volume and light weight
  • Maintenance free
Note:   (a)   Thermal Resistance = (Te - Tc)/Q
               (b)   DT = Tadia.-Tc (For 60oC Thermal bath)  
 
 
Heat Pipe Flat Type Features
 
D t Tolerance
t (+/-)		 W Tolerance
W (+/-)		 Curvature
(Center)		 Ineffective
length
f 3 2.5 0.10 3.42 0.10 RC9.5 Head end: 5.0

Tail end: 2.0
2.0 3.67
1.8 3.82
1.5 4.00
1.2 4.09
f 4 2.5 0.10 5.06 0.10 RC14 Head end: 7.0

Tail end: 4.0
2.0 5.31
1.8 5.42
1.5 5.56
1.2 5.71
f 5 2.5 0.10 6.61 0.10 RC18 Head end: 9.0

Tail end: 5.0
2.0 6.90
1.8 7.00
1.5 7.15
1.2 7.26
f 6 2.5 0.10 8.25 0.10 RC30 Head end: 10.0

Tail end: 6.0
2.0 8.50
1.8 8.68
1.6 8.79
1.5 8.86
1.4 8.90
1.2 8.96
f 8 2.5 0.10 11.56 0.10 T.B.D Head end: 15.0

Tail end: 9.0
2.0 11.85
1.8 12.00
1.6 12.11
1.5 12.18
1.4 12.21
1.2 12.30
 
     6081 Dales Street, Unit C
   Buena Park, CA 90621  USA

Tel: (714) 739 - 5797
Fax:(714) 739 - 5898

Sales@ACKTechnology.com

  
 

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