To ensurefire pumpThe selection is accurate and effective, the following arefire pumpDetailed data and steps for selection:

1.Determine demand parameters

1.1 Flow (Q)

• definition:fire pumpThe amount of water delivered per unit time.
• unit: Cubic meters per hour (m3/h) or liters per second (L/s).
• Determining method: Determined based on the building’s fire protection design specifications and actual needs. Normally, the flow rate should meet the fire water demand at the most unfavorable point.
  • residential building: Usually 10-30 m3/h.
  • commercial building: Usually 30-100 m3/h.
  • industrial facilities: Usually 50-200 m3/h.

1.2 Lift (H)

• definition:fire pumpAble to raise the height of water.
• unit: Meter (m).
• Determining method: Calculated based on the height of the building, the length of the pipe and the resistance loss. The head should include static head (building height) and dynamic head (pipeline resistance loss).
  • Quiet lift: The height of the building.
  • moving lift: The length and resistance loss of the pipeline, usually 10%-20% of the static head.

1.3 Pressure (P)

• definition:fire pumpoutlet water pressure.
• unit: Pascal (Pa) or bar (bar).
• Determining method: Determined based on the design pressure requirements of the fire protection system. Normally, the pressure should meet the fire water pressure demand at the most unfavorable point.
  • residential building: Usually 0.6-1.0 MPa.
  • commercial building: Usually 0.8-1.2 MPa.
  • industrial facilities: Usually 1.0-1.5 MPa.

1.4 Power (P)

• definition:fire pumpMotor power.
• unit: kilowatt (kW).
• Determining method: Calculate the power requirement of the pump based on the flow rate and head, and select the appropriate motor power.
  • Calculation formula：P = (Q × H) / (102 × η)
    • Q: Flow rate (m3/h)
    • H: Lift (m)
    • η: Pump efficiency (usually 0.6-0.8)

2.Select pump type

2.1centrifugal pump

• Features: Simple structure, smooth operation and high efficiency.
• Applicable occasions: Suitable for most fire protection systems, especially high-rise buildings and industrial facilities.

2.2submersible pump

• Features: The pump and motor are integrated in design and can be fully immersed in water.
• Applicable occasions: Suitable for underground pools, deep wells and other occasions requiring diving work.

2.3Self-priming pump

• Features: With self-priming function, it can automatically suck in liquid after starting.
• Applicable occasions: Suitable for ground-mounted fire protection systems, especially where quick start-up is required.

3.Select pump material

3.1 Pump body material

• cast iron: Common material, suitable for most occasions.
• Stainless steel: Strong corrosion resistance, suitable for corrosive media and occasions with high hygiene requirements.
• bronze: Good corrosion resistance, suitable for seawater and other corrosive media.

3.2 Impeller material

• cast iron: Common material, suitable for most occasions.
• Stainless steel: Strong corrosion resistance, suitable for corrosive media and occasions with high hygiene requirements.
• bronze: Good corrosion resistance, suitable for seawater and other corrosive media.

4.Select pump make and model

• Brand selection: Choose well-known brands to ensure product quality and after-sales service.
• Model selection:Select the appropriate model based on demand parameters and pump type. Refer to the product manuals and technical information provided by the brand.

5.Other considerations

5.1 Operational efficiency

• definition: The energy conversion efficiency of the pump.
• Select method: Choose a pump with high efficiency to reduce operating costs.

5.2 Noise and vibration

• definition: Noise and vibration generated when the pump is running.
• Select method: Choose a pump with low noise and vibration to ensure a comfortable operating environment.

5.3 Maintenance and care

• definition: Pump maintenance and service needs.
• Select method: Choose a pump that is easy to maintain and maintain to reduce maintenance costs.

6.Instance selection

Suppose you need to select a high-rise buildingfire pump, the specific requirement parameters are as follows:

• flow：50 m3/h
• Lift: 60 meters
• pressure：0.6 MPa
• power: Calculated based on flow rate and head

6.1 Select pump type

• centrifugal pump: Suitable for high-rise buildings, with simple structure, stable operation and high efficiency.

6.2 Select pump material

• Pump body material: Cast iron, suitable for most occasions.
• Impeller material: Stainless steel, strong corrosion resistance.

6.3 Select brand and model

• Brand selection: Choose a well-known brand.
• Model selection: Select the appropriate model based on the demand parameters and the product manual provided by the brand.

6.4 Other considerations

• Operational efficiency: Choose a pump with high efficiency to reduce operating costs.
• Noise and vibration: Choose a pump with low noise and vibration to ensure a comfortable operating environment.
• Maintenance and care: Choose a pump that is easy to maintain and maintain to reduce maintenance costs.

Ensure you choose the right one with these detailed selection guides and datafire pump, thereby effectively meeting the needs of the fire protection system and ensuring its normal operation in emergency situations.