In this experiment, the thermal efficiency of a conventional kettle using an insulation hood developed and 3D-printed by me with a 20 mm Armaflex insulation is investigated. First, water is heated from room temperature (16 °C) to boiling (100 °C), then allowed to cool over defined time intervals. The temperature profiles and the theoretical energy demand required to …
Tag archives: Thermodynamics
The influence of a vacuum on the volume of a balloon
In this experiment, the influence of the ambient pressure on the volume of a balloon is investigated. A slightly inflated balloon is placed in a desiccator and the external pressure is reduced by evacuating the container with a vacuum pump. This causes the balloon to visibly expand. When the air flows back in, the balloon …
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Experiment on the Thermal Expansion of Gases Using a Glass Bottle with a sealing Coin
This experiment visually demonstrates the thermal expansion of gases. A glass bottle is first placed in a cold environment, causing the air inside to cool down. The bottle is then brought into a warmer room and heated with hands. A wet coin placed on the bottle’s opening starts to rattle due to the temperature increase. …