Transient drainage processes are taken into consideration when deciding on the dimensions of storage reservoirs. The processes occur for example, in rainwater retention basins and storage lakes. The main purpose of the rainwater retention basin is to delay the drainage process by temporary intermediate storage. Storage lakes are used in applications such as water supply, energy conversion, or in flood protection. The water rises before it is fed over an overflow.
The drainage processes from reservoirs is realised by pipelines, tunnels or other means. A surge chamber prevents water hammer in pipes and fittings in the event of rapid changes in flow rate.
It is used to demonstrate transient drainage processes from storage reservoirs and how a surge chamber works. The trainer includes a basin with adjustable weir and a second, deeper-lying basin with overflow and drainage line. A surge chamber is installed in the drainage line.
Learning Objectives And Experiments
- Demonstrating transient drainage processes in two rainwater retention basins located one behind the other
- Demonstrating transient drainage processes in two storage lakes located one behind the other
- Recording oscillations of the water level in a surge chamber after water hammer
- Recording and displaying water level fluctuations
Features
- Investigation of transient drainage processes in storage reservoirs
- Simulation of rainwater retention basin and storage lakes
- Transparent surge chamber for observing oscillations after a water hammer
Specification
- Transient drainage processes in storage reservoirs
- Functioning of a surge chamber
- “Rainwater retention basin” experiment: basin A and basin B as short-term storage reservoirs, rectangular weir as gate
- “Storage lakes” experiment: basin A and basin B are used as long-term storage reservoirs, rectangular weir as overfall weir
- “Surge chamber” experiment: transparent pipe as surge chamber in drainage line of basin B
- Gate in the drainage line for generating water hammer
- Pressure sensors at both basins and the surge chamber capture the water level fluctuations
Representation of the variation in the water levels with software
Technical Specification
- Tank
- Diameter: 250mm
- Height: 190mm
- 4 inserts for the water drain
- Diameter: 8, 12, 16 and 24mm
- Impeller with 3 blades
- Vertical point gauge
- 6 movable rods
- Horizontal point gauge
- 2 movable rods
- Measuring tube, movable
- Horizontal 0…90mm, vertical 70…190mm
- Diameter: 4mm
