PC100-1.2WMS

Bespoke Design

The power centre can be supplied to match the system flow and recovery percentage based on fluid temperature and salinity levels to
ensure that the minimum level of treated water is used in comparison to the potable water produced. This gives increased membrane life
coupled to a low power consumption.

  • Info
  • Specification
  • Performance
  • Download

The power centre combines the operation of an axial piston high pressure desalination pump with an axial piston motor utilising the pressure in the waste brine to assist the electric motor in driving the pump therefore, reducing the power requirement to typically less than 3 kW/m³ throughout.

The power centre has been purpose designed and built for the RO market.

The power centre is driven via a splined shaft from an electric motor.

 This turns the pump rotating group which also drives the energy recovery rotating group via a simple splined mechanical coupling.

There is no need for a second separate booster pump as in many other energy recovery devices nor an additional electric drive motor.

Due to the integrated nature of the power centre design, the footprint is reduced.

There is also no need for additional fluid couplings which makes for a very compact system; ideal for ships and offshore platforms.

Recovery Rate
Part Number
30%
617-001
35%
618-001
40%
619-001
45%
620-001
50%
612-001
Shaft Material Duplex
Piston Material Duplex
Housing Material Duplex
Max. Operating Pressure 85 Bar
Min. Operating Pressure 30 Bar
Min. Inlet Pressure at Inlet
Pressure Switch Port
3.5 Bar
Max. Operating Temp. 50°C
Mounting Direction Horizontal
Operating Medium Sea/Salt Water
Drinkable Water
Production
Up to 500m³/day
Power Rating See graphs

The unit is designed for mounting horizontally using a flexible gear coupling to an electric motor for up to 1250 rpm rotational speed.

The power centre is designed for presurised feed water supply at a minimum of 3.5 bar measured at the inlet pressure switch port.

The design separates the feed water from the pump internal leakage water which must be piped away to a low pressure sump or drain.

inputpoweragainstpressure50
kwh1250rpm500
product500A
product500B
pumpOutputFlow500A
pumpOutputFlow500B

This download is the Power Centre Catalog

This download is the Power Centre 500 PDF

  • Info
  • Specification
  • Performance
  • Download

The power centre combines the operation of an axial piston pump with an axial piston high pressure desalination motor utilising the pressure in the waste brine to assist the electric motor in driving the pump therefore, reducing the power requirement to typically less than 3 kW/m³ throughout. The power centre has been purpose designed and built for the RO market.

The power centre is driven via a splined shaft from an electric motor. This turns
the pump rotating group which also drives the energy recovery rotating group via
a simple splined mechanical coupling.

There is no need for a second separate booster pump as in many other energy recovery devices nor an additional electric drive motor.

Due to the integrated nature of the power centre design, the footprint is reduced.
There is also no need for additional fluid couplings which makes for a very compact system; ideal for ships and offshore platforms.

Recovery Rate
Part Number
30%
617-001
35%
618-001
40%
619-001
45%
620-001
50%
612-001
Shaft Material Duplex
Piston Material Duplex
Housing Material Duplex
Max. Operating Pressure 85 Bar
Min. Operating Pressure 30 Bar
Min. Inlet Pressure at Inlet
Pressure Switch Port
3.5 Bar
Max. Operating Temp. 50°C
Mounting Direction Horizontal
Operating Medium Sea/Salt Water
Drinkable Water
Production
Up to 500m³/day
Power Rating See graphs

The unit is designed for mounting horizontally using a flexible gear coupling to an electric motor for up to 1250 rpm rotational speed.

The power centre is designed for presurised feed water supply at a minimum of 3.5 bar measured at the inlet pressure switch port. The design separates the feed water from the pump internal leakage water which must be piped away to a low pressure sump or drain.

inputpoweragainstpressure50
kwh1250rpm500
product500A
product500B
pumpOutputFlow500A
pumpOutputFlow500B

This download is the Power Centre Catalog

This download is the Power Centre 500 PDF

https://www.waterhydraulics.co.uk/wp-content/uploads/2021/06/powerCentreCircuitDiagram.png

Low Maintenance Costs

The simple compact design of the power centre has ensured parts requiring maintenance are easily accessible therefore, reducing maintenance costs. Both the pump and energy recovery motor utilise the same well proven axial piston technology leading to long service
intervals without the need for expensive oil changes. No special tools are required, but for extra assurance service exchange units are available.

Item
Component
Function
1
Feed / Boost Pump
Ensures the inlet pressure supply to the pump’s Low Pressure In connection at a minimum of 3.5 bar.
2
Filter
Ensure pumps minimum filtration requirements are met.
3
Inlet Protection Pressure Switch Set 3.5 bar
Ensures a continuous minimum 3.5 bar pressure at the pumps inlet. If the minimum of 3.5 bar is not achieved system shutdown to avoid pump damage.
4
Power Centre
The Water Hydraulics Power Centre including axial piston pump with integrated axial piston motor (ERD) and electric motor 500-1250 RPM, 80 bar maximum working pressure.
5
Back Pressure Valve
Setting the minimum backpressure on the Power Centre’s Low Pressure Out

High Reliability with Low Risk

Our in-house designed axial piston pumps and motors are 100% tested at 160 bar pressure settings or twice the working pressure ensuring the reliability of the power centre. The power centre utilises salt water to lubricate bearing surfaces so there is absolutely no risk of oil contamination to the environment or the working area.

500

Reduced Operating Costs

The integrated energy recovery device enables high energy efficiency, meaning lower running costs and potential energy savings of up to 70% (compared with systems without energy recovery). This also leads to the use of smaller electric motors and control systems thereby reducing the capital cost.

Position Connection Port Dimension
A
Low Pressure Out (ERD)
3″ 3000 PSI CLASS SAE 4-BOLT  FLANGE
B
Low Pressure In (Pump)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
C
High Pressure In (ERD):
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
D
High Pressure Out (Pump)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
E
Case Drain (Pump)
1 1/2″ 3000 PSI CLASS SAE 4-BOLT FLANG
F
Case Drain (ERD)
1 1/2″ 3000 PSI CLASS SAE 4-BOLT FLANGE
G
Inlet Pressure Switch Port
G1/4” BSPP FEMALE
500
Position Connection Port Dimension
A
Low Pressure Out (ERD)
3″ 3000 PSI CLASS SAE 4-BOLT  FLANGE
B
Low Pressure In (Pump)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
C
High Pressure In (ERD):
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
D
High Pressure Out (Pump)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
E
Case Drain (Pump)
1 1/2″ 3000 PSI CLASS SAE 4-BOLT FLANG
F
Case Drain (ERD)
1 1/2″ 3000 PSI CLASS SAE 4-BOLT FLANGE
G
Inlet Pressure Switch Port
G1/4” BSPP FEMALE

High Reliability with Low Risk

Our in-house designed axial piston pumps and motors are 100% tested at 160 bar pressure settings or twice the working pressure ensuring the reliability of the power centre.

The power centre utilises salt water to lubricate bearing surfaces so there is absolutely no risk of oil contamination to the environment or the working area.

The power centre utilises salt water to lubricate bearing surfaces so there is absolutely no risk of oil contamination to the environment or the working area.

500
Position Connection Port Dimension
A
Low Pressure Out (ERD)
3″ 3000 PSI CLASS SAE 4-BOLT  FLANGE
B
Low Pressure In (Pump)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
C
High Pressure In (ERD):
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
D
High Pressure Out (Pump)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
E
Case Drain (Pump)
1 1/2″ 3000 PSI CLASS SAE 4-BOLT FLANG
F
Case Drain (ERD)
1 1/2″ 3000 PSI CLASS SAE 4-BOLT FLANGE
G
Inlet Pressure Switch Port
G1/4” BSPP FEMALE

Reduced Operating Costs

The integrated energy recovery device enables high energy efficiency, meaning lower running costs and potential energy savings of up to 70% (compared with systems without energy recovery).

This also leads to the use of smaller electric motors and control systems thereby reducing the capital cost.

500
Position Connection Port Dimension
A
Low Pressure Out (ERD)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
B
Low Pressure In (Pump)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
C
High Pressure In (ERD):
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
D
High Pressure Out (Pump)
3″ 3000 PSI CLASS SAE 4-BOLT FLANGE
E
Case Drain (Pump)
1 1/2″ 3000 PSI CLASS SAE 4-BOLT FLANG
F
Case Drain (ERD)
1 1/2″ 3000 PSI CLASS SAE 4-BOLT FLANGE
G
Inlet Pressure Switch Port
G1/4” BSPP FEMALE

Reduction of Capital Costs

There is no need for a separate electric motor to drive the energy recovery device nor a separate pressure boost pump. The power centre may be driven at most synchronous electric motor speeds, both 50hz and 60hz without further speed reduction or the cost of pulleys belts and safety guarding. There is also a reduced requirement for expensive
fluid connectors and pulsation attenuation.

https://www.waterhydraulics.co.uk/wp-content/uploads/2021/06/2pc500.jpg
https://www.waterhydraulics.co.uk/wp-content/uploads/2021/06/3pc500.jpg
Item Number Description
1
Electric Motor
2
Power Centre
3
Mounting Frame
4
Bellhousing & Flexible Gear Coupling
5
Inlet Protection Pressure Switch Set 3.5 bar

Optimum Engineering Design

The power centre is constructed from duplex which is a highly corrosion resistant material to sea water in comparison to other stainless steels. It employs SAE flanged connections, allowing the installer to rotate the hose connections to the unit which reduces noise, vibration and any axial strain on the connecting hoses that might otherwise be present.

Reduction of Capital Costs

There is no need for a separate electric motor to drive the energy recovery device nor a separate pressure boost pump.

The power centre may be driven at most synchronous electric motor speeds, both 50hz and 60hz without further speed reduction or the cost of pulleys belts and safety guarding.

There is also a reduced requirement for expensive fluid connectors and pulsation attenuation.

https://www.waterhydraulics.co.uk/wp-content/uploads/2021/06/2pc500.jpg
https://www.waterhydraulics.co.uk/wp-content/uploads/2021/06/3pc500.jpg
Item Number Description
1
Electric Motor
2
Power Centre
3
Mounting Frame
4
Bellhousing & Flexible Gear Coupling
5
Inlet Protection Pressure Switch Set 3.5 bar

Optimum Engineering Design

The power centre is constructed from duplex which is a highly corrosion resistant material to sea water in comparison to other stainless steels.

It employs SAE flanged connections, allowing the installer to rotate the hose connections to the unit which reduces noise, vibration and any axial strain on the connecting hoses that might otherwise be present.