Series and Parallel Pumps V.2 Teaching Equipment

Teaching Experimental Applications :

Experiment 1: Single Pump Head–Flow Relationship (Characteristic Curve)

Description :

• To demonstrate the relationship between total head and the flow rate supplied by the pump

Experiment 2: Finding the Single Pump Specific Speed

Description :

• To determine the specific speed of a pump and use it to characterize the type of impeller used in the pump

Experiment 3: Finding Single Pump Efficiency

Description :

• To determine the efficiency of a pump and evaluate the factors on which the efficiency depends

Experiment 4: Finding the Single Pump NPSH (A) Value

Description :

• To understand the basic concepts of NPSH and NPSHr

Experiment 5: Plotting the Series Combination Pump Characteristic Curve

Description :

• To visually observe the effect of connecting pumps in series on pressure and flow rate

Experiment 6: Drawing the Parallel Combination Pump Characteristic Curve

Description :

• To determine the characteristic curve experimentally by operating two identical pumps in parallel

Technical Details :

Internal Diameters :

• Suction pipe: Ø interior = 24.4 mm, Ø exterior = 25.4 mm
• Delivery pipe: Ø interior = 24.4 mm, Ø exterior = 25.4 mm

Tank :

• Internal tank capacity: 27 L
• External water source: Not required
• Material: Fiber glass

Manometers :

• Bourdon type with glycerin: 0–4 bar
• Bourdon type with glycerin: -0.5–0.5 bar (3 units)

Pump Characteristics :

• Maximum flow rate: 100 L/min (vertical) + 200 L/min (horizontal)
• Maximum head: 12 m water
• Speed control: Fixed

Other Elements :

• Electronic flow meter: 120 LPM high flow rate / 60 LPM low flow rate with display
• Ammeter: 2 units, 3.6 A
• Control console

Pressure Gauges :

• Inlet pressure: 0–100 PSI
• Pump outlet pressure: 0–200 PSI

Tank :

• Capacity: 27 L
• Material: Fiber glass

Pressure Gauges :

• Total quantity installed: 5
• Suction gauges: 2 units for pump inlets, P1 and P2
• Discharge gauges: 3 units for pump outlets, P3, P4 and P5

Valves :

• Type: Ball valves
• Total quantity installed: 5
• V1 and V2: Pump inlets
• V3: Discharge from Pump 1 to V5
• V4: Inlet from Pump 1 to Pump 2, isolation valve
• V5: Discharge to drain, throttle valve

Pipes and Hoses :

• Pipe type: PPRC (Polypropylene Random Copolymer)
• Pipe diameter: 25.4 mm (1.00 in)
• Joints: 14 × 90° elbows, 2 × 45° elbows, 5 × tees
• Hose diameter and connector: 1.25 in quick connector, 32 mm

Pumps :

• Quantity: 2
• Power: 0.65 kW / 0.85 HP
• Electrical supply: 220 V / 3.6 A / 50 Hz
• Maximum head: 13 m
• Flow rate: 300 L/min
• Weight: 8 kg
• Maximum speed: 2850 RPM

Control Console :

• Ammeters: 2
• Indicator light: Yes
• Switches: 3 (2 for pumps and 1 main power)