XVII      Short Course

                                            Location:             DoubleTree Hotel, San Jose, CA

                                            Dates:                  March 18-19, 2001 (Sunday & Monday)


Thermal Design for Electronics Cooling Applications

Instructor: Robert E. Simons, IBM

Introduction

This intensive short course is designed to provide an appreciation and understanding of the important role of thermal design in the development and operation of electronic equipment, as well as the basic techniques for estimating thermal performance of electronic packages and systems. Fundmental principles of thermal conduction for heat transport within an electronic package, and convection (natural and forced) for heat removal from the package are presented. Methods to estimate heat transfer coefficients and thermal spreading resistance are covered, as well as radiation and liquid immersion heat transfer.

The use of heat sinks to augment air cooling performance is discussed along with simple methods to predict heat sink performance. Flow and pressure drop characteristics in air-cooled systems are also covered. The use of fan performance and system flow impedance curves to determine total air flow rate and flow distribution in a system is presented. Easy-to-use methods of package cooling analysis utilizing the junction temperature equation, thermalll resistance concepts, and simple network models are included.

Many annotated numberical examples are provided throughout the course to illustrate  the application of basic concepts and equations to model heat flow in electronic packages from the chip level to system level.

This course will be of interest to electrical and mechanical engineers with a need to understand thermal design. The course is presented at a level which will be understandable even to those with no prior heat transfer backaground. The course also provides infromation of interest and of use to experienced thermal engineers.

Topic Outline
  • Introduction

  •    Objectives
       Power Dissipation Trend(s)
       Temperature and Reliability
       Thermal Design Objectives
       Thermal Design Variables
       Thermal Management Options
  • Conduction

  •    Fourier's Law
       Electro-Thermal Analog
       Series and Parallel Conduction
       Thermal Spreading Resistance
       Thermal Contact Resistance
  • Convection

  •    Newton's Rate Equation
       Heat Transfer Coefficient
       Relative Cooling Capability
       Dimensionless Groups
       Fluid Properties
       Natural Convection Heat Transfer
       Forced Convection Heat Transfer
     
  • Radiation

  •    Planck's Law
       Stefan-Boltzman Law
       Emissivity
       Radiation Equation
       Radiation Heat Transfer coefficient
  • Immersion Cooling

  •    Single Phase
       Pool Boiling
       Flow Boiling
  • Extended Surfaces and Heat Sinks

  •    Typical Extended Surfaces
       Fin Efficiency Concept
       Radial Fin Heat Sink Analysis
       Effect of Air Bypass
  • Air Flow and Pressure Drop

  •    Fan Curves and System Flow Resistance
       Pressure Drop Equation
       Electro-Flow Analog
       Flow Network Modeling
  • Package Cooling Analysis

  •    Junction Temperature Equation
       Internal and External Resistance
       Thermal Network Modeling
     

     
    Instructor
    Robert Simons has been engaged in the development and application of cooling technologies for electronic equipment for more than 30 years at IBM. While at IBM he participated in the thermal design and fevelopment of cooling technologies for the IBM 3033, 3081 and 3090 Processors as well as direct liquid immersion cooling techniques. He holds 3- cooling patents and hs published many papers and articles related to cooling electronics. He has conducted many lectures and seminars on cooling electronic equipment around the world.

    Cost: $525.00
    (Space is limited - please register as soon as possible.)


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