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Saving Battery Life on a Laptop Computer

Saving Battery Life on a Laptop Computer. Adam Brandt Kelly Layland. The Problem. Laptops generate a lot of heat, especially when used on your lap A pillow is often used to insulate your legs Determine if resting on a pillow causes a laptop to use more energy.

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Saving Battery Life on a Laptop Computer

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  1. Saving Battery Life on a Laptop Computer Adam Brandt Kelly Layland

  2. The Problem • Laptops generate a lot of heat, especially when used on your lap • A pillow is often used to insulate your legs • Determine if resting on a pillow causes a laptop to use more energy. • Find out what is the best way to use a laptop computer. Objectives

  3. Heat Transfer Problem • What is the heat flux when the laptop is rested on different materials? • How does the heat flux affect the temperature of the laptop and the energy used by the laptop

  4. Methods • Ran laptops on different surfaces until steady state temperature reached • Measured temperature at same spot on laptop for each experimental run • Tested 2 laptops and compared data

  5. Results and Analysis • Used thermal conductivity to calculate heat flux from laptop • Lowest temperatures occurred on a table • Highest temperatures and lowest heat flux occurred on a pillow Results from laptop 1 Results from laptop 2

  6. Conclusions • Using your laptop on a pillow is the worst option • significantly lowers the heat flux and increases the temperature of the laptop which could possibly cause damage to the laptop • causes the fan to run continuously which uses more energy • Placing a conductive material on top of the pillow lowers the temperature and increases the heat flux through the material, but not a lot • Using a laptop on a table, not on your lap, is the most energy efficient

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