Tesca Water Reservoir and Surge Tower Apparatus consists of two identical reservoirs connected in series. The lower reservoir supplies a pipe which terminates in a surge tower with a flow control valve and a shut-off valve. Water flows into the upper reservoir through a 50 l/min flowmeter and, when the level has reached the necessary height, flows over a weir into the lower reservoir. Water levels in the reservoirs are measured by pressure transducers connected to a pen recorder allowing the weir and flowmeter to be calibrated.
Tesca Water Reservoir and Surge Tower Apparatus is useful to demonstrate the use of reservoirs for water storage and flood control and to demonstrate the use of a surge tower as a means of minimizing pressure transients in a penstock.
Tesca    Water    Reservoir    and    Surge    Tower Apparatus enables an understanding of:
Unsteady flow theory.
The continuity principle used in hydrology for flood routing. &
The equation of motion applied to mass oscillations occurring in pump and hydro- power turbine installations.

Experiments:
1. Mass continuity in unsteady systems.
2. Flood  routing  and  reservoir  inflow  and outflow hydrographs.
3. Surge in a pipe and mass oscillation in a surge tower.

Instrumentation:
Pressure transducers for water level in reservoirs
Pressure transducer for water level in surge tower
Variable gap flow meter Technical Specification: Reservoirs: 0.9 m x 0.9 m x 0.3 m
Surge  Tower:  63  mm  diameter,  1.8  Meters Height.

Services:
Power: 220 – 240V / 50Hz, Single Phase AC
Water: Pressure: 0.5 bar minimum; Flow rate: 50L/min; Inlet: 20mm Ø.