Extended Surface Liquid Cold Plates

Construction Methods

• Vacuum Braze
  • Flux Free - No Post Cleaning Processes or Risk of Residual Contaminants
  • Strong Mechanical Joints
  • No Interface Resistance – Best Thermal Performance
  • Uniform Heating & Tight Process Control for High Repeatability & Consistent Manufacturing Quality
• Controlled Atmosphere Brazing (CAB)
  • Faster Braze Times
  • Non-Corrosive Flux
  • No Interface Resistance – High Thermal Performance
• Soldered
• Epoxy
• Press Fit

Machined Microchannels & Meso Channels

For unparalleled control of flow path geometry, multi-axis, high accuracy CNCs can machine complex microchannel and meso channels directly into the Liquid Cold Plate. These narrow channels increase the surface area for heat transfer from the Liquid Cold Plate to the working fluid. Milled channels are then capped and sealed with a second plate, typically using Vacuum Brazing or CAB processes.

Folded Fin Inserts



Folded fin inserts are a common addition to machined and brazed liquid cold plates. Brazing or soldering the folded fin inserts into the plate mechanically and thermally joins the additional surface area to both the top and bottom of the flow path. Folded fins come in a variety of forms like louvered, wavy or ruffled, round or flat crested, however lanced offset folded fins are the most popular. Lanced offset folded fins have the additional benefit of increased turbulence and heat transfer compared to other folded fin types. Each type can be manufactured with a wide range of materials for optimized performance and liquid & fluid compatibility.

Skived Fin Inserts

Skived fin inserts are skived fin heat sinks specifically designed for use in your chosen fluid, which usually means thinner fins and a higher fin density. Skived fin heat sinks can either be dropped into a machined flow path or the cold plate can have a machined opening where the insert can directly contact the heat source and fluid without introducing an interface resistance of solder or epoxy.

Tube Turbulators

Tube style cold plates can benefit from the installation of turbulator inserts, which are intricate wire assemblies designed to increase liquid turbulence within the flow path. Liquid cold plates utilizing higher viscosity fluids benefit the most from wire turbulators as performance increases between 5-15% over an empty flow path.

Depending on the wire density and gauge, turbulator impact can be matched with your specific requirements for liquid cold plate performance.