What are the best brakes for generating heat in a small space?

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SUMMARY

The discussion focuses on the design of a braking system that generates heat in a compact space, utilizing a flywheel and brake pads. The user references kinetic energy calculations, specifically KE = 0.5mv², to determine the energy difference when brakes are applied. They seek advice on suitable brake types that can produce significant heat while fitting within a small design. The conversation also explores the implications of heating a coil connected to the brake pads versus heating the surrounding space.

PREREQUISITES
  • Understanding of kinetic energy calculations (KE = 0.5mv²)
  • Familiarity with brake pad materials and their thermal properties
  • Knowledge of flywheel dynamics and energy transfer
  • Basic principles of thermodynamics related to heat generation
NEXT STEPS
  • Research different types of brake pads and their heat generation capabilities
  • Explore flywheel design and its impact on energy efficiency
  • Investigate the thermal conductivity of materials for heating coils
  • Learn about the relationship between braking force and heat generation in compact systems
USEFUL FOR

Engineers, product designers, and hobbyists interested in thermal management solutions in compact mechanical systems, particularly those working with braking mechanisms and energy conversion.

everybest
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Hi, I'm trying to use https://www.physicsforums.com/showthread.php?t=50668 for a design I'm working on, but the situation doesn't exactly match.

My idea was to use something like this (http://ecx.images-amazon.com/images/I/51KH24CPE0L._AA280_.jpg) with a flywheel and brake pads to generate heat.

I haven't taken physics in a few years, so I'm a little rusty. I thought I could use KE=.5mv^2 with like, the difference of "velocity without brakes" and "velocity with brakes", but those aren't initial/final, so I would need a time constant in there too.

If anybody can help, that'd be great. Are there any kind of brakes out there that would generate a lot of heat and still be small enough to fit into something like this?
 
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Maybe I'm just confusing myself but would it be KE=.5m((d1/t1)^2-(d2/t2)^2) assuming d1=d2 OR t1=t2? (1 being without breaks and 2 being with breaks)

This is assuming the energy difference is all caused by the brake pads of course.

Also. would this all apply if I'm heating a coil connected to the brake pads opposed to heating the space?
 
Last edited:

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