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Using this trainer the function of a normal expansion vessel is examined and a pressure-volume characteristic recorded. The expansion vessel is filled with water from a supply tank.
The pressure is generated using a small compressor and adjusted using a pressure regulating valve. The amount of water taken up by the expansion vessel is read on a scale on the supply tank.
Learning Objectives / Experiments
- Function and operation of a diaphragm expansion vessel
- Displacement volume of an expansion vessel as a function of the pressure