How does a rubber band heat engine work？
Rubber band heat engine is a simple device that converts thermal energy into mechanical work using a rubber band as the working substance. The basic principle of operation is similar to that of a conventional heat engine, such as a steam engine or a car engine.
The rubber band heat engine consists of a few basic components, including a heat source, a cold reservoir, a rubber band, and a mechanical system for converting the stretching of the rubber band into useful work. The rubber band is stretched between two points, with one end attached to a fixed anchor and the other end attached to a movable piston or other mechanical device.
The heat source is applied to one end of the rubber band, causing it to expand and contract as it absorbs and releases heat. As the rubber band expands, it moves the piston or other mechanical device, doing mechanical work. When the rubber band contracts, it cools down and returns to its original state, ready to repeat the cycle.
The rubber band heat engine can be used to power small devices, such as toys or sensors, and can be made with low-cost materials. However, the efficiency of the rubber band heat engine is limited due to the low thermal conductivity of rubber, which makes it difficult to transfer heat quickly and efficiently. Therefore, it is not typically used for large-scale power generation or other industrial applications.
