The "Heat Pump Experiments" set consists of a hot air motor and a modified ball pump.

The very simple hot air motor is characterized by its slow operation and ease of use. During operation, the temperature difference required for its function is directly perceptible to the students.

The outlet of the ball pump is connected to a copper pipe with an inserted copper mesh. A nozzle is located at the end of the copper pipe. During pumping, the copper pipe heats up noticeably, while the outgoing air remains consistently cool.

The instruction booklet demonstrates how the heat pump experiments can be integrated into the physics curriculum for 9th grade at Waldorf schools.

9th/10th Grade Physics

Contents: Ball pump, hot air motor, copper pipe, instruction booklet "Geyser and Heat Pump".