Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High...
Transcript of Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High...
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“Planta desaladora en Bahrein. Medidas de ahorro de energía y de la repercusión total en la planta”
Presentador: Rafael Ramos Ruiz (Danfoss)
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High Efficiency Technologies - for Increased Energy Savings in Reversed Osmosis
• Motors
• Variable Speed Drives
• High Pressure Pumps
• Axial Piston Pumps
• Centrifugal Pumps
• Energy Recovery Devices
• Installation and Energy costs
• Business Case
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High Efficiency Areas
Efficiency in Pumps
Efficiency in Motors
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Objective – Affordable water for all plant sizes
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Baseline Energy Recovery
Other EnergyImprovements
Future Improvements
kWh
/m3
-----------------------------------------------------------------
First-pass RO Process Energy Consumption
40% recovery and 60 abrg. – Qualitative values.
Thermodynamic minimum
SWRO Energy Innovations
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Room for improvement in HPP Efficiency!
SWRO Setup without Energy Recovery
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Isave 21
RO Membrane
Back
Pressure
Valve
Permeate
HP ConcentrateHP FeedHP Feed
Balanced flow
Clean Sea
Water
∑ 67 m3/h
30 m3/h 37 m
3/h 37 m
3/h
37 m3/h37 m
3/h
∑ 67 m3/h
60 bar
30 m3/h
InOut
APP 30 LP Concentrate
30 m3/h 37 m3/h 37 m3/h
30 m3/h∑ 67 m3/h
37 m3/h
∑ 67 m3/h
37 m3/h
Clean
seawater
iSave
SWRO Setup with High Efficiency Recovery device
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Reverse Osmosis – Components
In a RO plant, following components are used:
• High Pressure Pumps, Leak valves, a pressure transmitter to control the HPP, a pressure switch to protect the HPP, a booster pump and small dosage pumps for bisulfite, sulfuric acid, etc.
All pumps are composed by an electrical motor and a mechanical component, and each part of the pump has a particular efficiency.
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High Efficiency Technologies - for Increased Energy Savings in Reversed Osmosis
• Motors
• Variable Speed Drives
• High Pressure Pumps
• Axial Piston Pumps
• Centrifugal Pumps
• Energy Recovery Devices
• Installation and Energy costs
• Business Case
![Page 10: Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High Efficiency Technologies - for Increased Energy Savings in ... Using multiple APP pumps](https://reader035.fdocuments.in/reader035/viewer/2022070919/5fb87e8a0d391e304b69a1d6/html5/thumbnails/10.jpg)
Permanent Magnetic Motors
• Synchronous motors.
• They have magnets mounted or embedded, to help to create magnetic field for rotation, it means they use less energy.
• Efficiency IE3 and IE4
Motors• Machines driven by electrical motors consume around 2/3 of all the electrical energy used in
industry, which has also a great impact on the environment.• Motors work for a large number of hours and have long lifetimes• Reducing motors’ energy consumption, by increasing their efficiency, reduces its
environmental impacts as well as its operational costs.
Induction Motors• Stator built of cover or aluminum • Electricity is needed to create a magnetic
field to output rotary motion. Old motors have efficiency class IE1,and IE2. Current induction motors are efficiency class IE3
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IEC 60034-30-1 Standard on Efficiency Classes for Low Voltage AC Motors
• Defines efficiency classes IE1-IE4 for motors rated for start and operation on a sinusoidal voltage supply
• No distinction is made between motor technologies (e.g. Induction or PM motors)
• IE classes are defined at the nominal motor load
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Permanent Magnetic Motors
Induction Motors
Motors Efficiency Comparison
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High Efficiency Technologies - for Increased Energy Savings in Reversed Osmosis
• Motors
• Variable Speed Drives
• High Pressure Pumps
• Axial Piston Pumps
• Centrifugal Pumps
• Energy Recovery Devices
• Installation and Energy costs
• Business Case
![Page 14: Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High Efficiency Technologies - for Increased Energy Savings in ... Using multiple APP pumps](https://reader035.fdocuments.in/reader035/viewer/2022070919/5fb87e8a0d391e304b69a1d6/html5/thumbnails/14.jpg)
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Increased System efficiency with VSD
• With VSD • Without VSD
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Motor Start Up
• Direct on Line, consume 7 times Nominal Current of the motor
• Soft Started, consume 2 Times
• Start and Triangle started 2 and 4 Times
• Speed Frequency Drive adaptsconsume to the load
Increased System efficiency with VSD
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Per each 2 kw wasted in losses we need 1 Kw for Air conditioning
Increased System efficiency with VSD
Two technologies to refrigerate Drives• Air Cooled• Liquid Cooled
20-25kw Losses to air 1,5-3kw Losses to air
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High Efficiency Technologies - for Increased Energy Savings in Reversed Osmosis
• Motors
• Variable Speed Drives
• High Pressure Pumps
• Axial Piston Pumps
• Centrifugal Pumps
• Energy Recovery Devices
• Installation and Energy costs
![Page 18: Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High Efficiency Technologies - for Increased Energy Savings in ... Using multiple APP pumps](https://reader035.fdocuments.in/reader035/viewer/2022070919/5fb87e8a0d391e304b69a1d6/html5/thumbnails/18.jpg)
•
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Aplicaciones en que la carga no varía con la velocidad
La potencia necesaria es proporcional al par requerido y a la velocidad del motor
Se puede producir un ahorro si se reduce la velocidad con carga constante
El ahorro de energía no justifica la inversión en un variador.
High Pressure Pumps
100% Speed, 100% Torque 50% Speed, 100% Torque
Speed SpeedTo
rqu
e
Torq
ue
Operation Point Operation Point
Energy Energy
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• Positive Displacement (PD) pump = nearby constant flow regardless of the pressure. • Flow regulated by VSD• Near constant High Efficiency
High Pressure Pumps
Positive Displacement Pump Flow Curve
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High Pressure Pumps Reduced energy consumption for increased savings
• APP pumps deliver up to 90% total efficiency• Consistent across all
flow rates
• Compared to 60-80% for centrifugal
• Save up to 50% electricity compared to centrifugal pumps
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High Efficiency Technologies - for Increased Energy Savings in Reversed Osmosis
• Motors
• Variable Speed Drives
• High Pressure Pumps
• Axial Piston Pumps
• Centrifugal Pumps
• Energy Recovery Devices
• Installation and Energy costs
• Business Case
![Page 22: Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High Efficiency Technologies - for Increased Energy Savings in ... Using multiple APP pumps](https://reader035.fdocuments.in/reader035/viewer/2022070919/5fb87e8a0d391e304b69a1d6/html5/thumbnails/22.jpg)
High Pressure Pumps
•
Pump Characteristics
Pump Characteristics-
OperationPoint
OperationPoint
System Characteristics
System Characteristics
EnergyEnergy
Flow QFlow Q
Pre
ssu
re B
ar
Pre
ssu
re B
ar
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High Pressure Pumps
• Variable Torque – Centrifugal Pumps
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High Pressure Pumps Up to 50% Energy Savings
SWRO Plant
Saves 100KW per pump, decreasing 6 Hz
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High Efficiency Technologies - for Increased Energy Savings in Reversed Osmosis
• Motors
• Variable Speed Drives
• High Pressure Pumps
• Axial Piston Pumps
• Centrifugal Pumps
• Energy Recovery Devices
• Installation and Energy costs
• Business Case
![Page 26: Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High Efficiency Technologies - for Increased Energy Savings in ... Using multiple APP pumps](https://reader035.fdocuments.in/reader035/viewer/2022070919/5fb87e8a0d391e304b69a1d6/html5/thumbnails/26.jpg)
Energy Recovery Pumps
Isave 21
RO Membrane
Back
Pressure
Valve
Permeate
HP ConcentrateHP FeedHP Feed
Balanced flow
Clean Sea
Water
∑ 67 m3/h
30 m3/h 37 m
3/h 37 m
3/h
37 m3/h37 m
3/h
∑ 67 m3/h
60 bar
30 m3/h
InOut
APP 30 LP Concentrate
30 m3/h 37 m3/h 37 m3/h
30 m3/h∑ 67 m3/h
37 m3/h
∑ 67 m3/h
37 m3/h
Clean
seawater
iSave
SWRO Setup with isobaric iSave ERD
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High Pressure Pumps Pelton Turbine Recovery
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High Pressure Pumps Turbocharger Recovery
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High Pressure Pumps Isobaric Recovery
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Energy Recovery Pumps
Isave 21
RO Membrane
Back
Pressure
Valve
Permeate
HP ConcentrateHP FeedHP Feed
Balanced flow
Clean Sea
Water
∑ 67 m3/h
30 m3/h 37 m
3/h 37 m
3/h
37 m3/h37 m
3/h
∑ 67 m3/h
60 bar
30 m3/h
InOut
APP 30 LP Concentrate
30 m3/h 37 m3/h 37 m3/h
30 m3/h∑ 67 m3/h
37 m3/h
∑ 67 m3/h
37 m3/h
Clean
seawater
iSave
SWRO Setup with isobaric iSave ERD
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High Efficiency ERD
Features:
• Isobaric Principle (High efficiency)
• Positive displacement booster pump incorporated.
• Constant flow and constant efficiency regardless DP across the system
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High Efficiency Technologies - for Increased Energy Savings in Reversed Osmosis
• Motors
• Variable Speed Drives
• High Pressure Pumps
• Axial Piston Pumps
• Centrifugal Pumps
• Energy Recovery Devices
• Installation and Energy costs
• Business Case
![Page 33: Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High Efficiency Technologies - for Increased Energy Savings in ... Using multiple APP pumps](https://reader035.fdocuments.in/reader035/viewer/2022070919/5fb87e8a0d391e304b69a1d6/html5/thumbnails/33.jpg)
High Pressure Pumps SWRO Performance Comparison
ERD TYPE1,000 m3/d
(kWh/m3)
5,000 m3/d
(kWh/m3)
>15,000 m3/d
SYSTEM (kWh/m3)
Pelton Turbine 4.01 3,42 2.79
Turbocharger 3,58 3,03 2,62
Isobaric ERD
(iSave®) 2,76 2.42 2,29
SWRO Plant 5000m3/dayPressure to Membrane 66 bar @ 45%Different Recovery systemsHP CF Pump with VSD
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ERD TYPE1000 m3/d
(kWh/m3)
5,000 m3/d
(kWh/m3)
>15,000 m3/d
SYSTEM (kWh/m3)
Pelton Turbine 4.01 3,42 2.69
Turbocharger 3,58 3,03 2,61
Isobaric ERD
(Isave®)2,76 2.42 2,292,29 2,29
3,01 2,69
3,13 2,86
High Pressure Pumps SWRO Performance Comparison
SWRO Plant 5000m3/dayPressure to Membrane 66 bar @ 45%Different Recovery systemAxis Piston Pump by VSD
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SWRO Plant 5000m3/dayPressure to Membrane 66 bar @ 45%Different recovery system, changing CF for Piston Axis Pump
High Pressure Pumps SWRO Performance Comparison
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Energy consumption with variation in membrane pressure
Energy consumption: 4.764 MWh/year (2,61 kwh/m3)
Throttle loss: 373.000 kWh/year(0,2 kwh/m3)
Energy consumption: 4.480 MWh/year (2,45 kwh/m3)
VSD loss: 90.000 kWh/year(0,05 kwh/m3)
Energy consumption: 4.372 MWh/year (2,39 kwh/m3)
VSD loss: 6.800 kWh/year(0,0004 kwh/m3)
SWRO Plant 5000m3/dayPressure to Membrane 60-66 bar @ 45%With isobaric recovery systemHP CF Pump with throttle Valve vs Axis Piston Pump by VSD
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Positive displacement Axial Piston Pump @ Same operating conditions
Pump skid - total: 3.875 MWh/year ( 2,12 average)VSD Loss: 39,500 kWh/year (1% of total) (0,02 kwh/m3)
High Pressure Pumps
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Using multiple APP pumps in parallel and only one APP pump controlled with a VSD provide the lowest annual power consumption. Savings up to 22 % can be achieved.
High Pressure Pumps Conclusions
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High Efficiency Technologies - for Increased Energy Savings in Reversed Osmosis
• Motors
• Variable Speed Drives
• High Pressure Pumps
• Axial Piston Pumps
• Centrifugal Pumps
• Energy Recovery Devices
• Installation and Energy costs
• Business Case
![Page 40: Presentación de PowerPoint...Apr 02, 2020 · Presentador: Rafael Ramos Ruiz (Danfoss) High Efficiency Technologies - for Increased Energy Savings in ... Using multiple APP pumps](https://reader035.fdocuments.in/reader035/viewer/2022070919/5fb87e8a0d391e304b69a1d6/html5/thumbnails/40.jpg)
SWRO Plant 3500m3/dayLocated: Bahrein - AsryCostumer: Gulf House Markets.Water costs increased from 0,35dinares/m3 to 0,75dinares/m3Technology installed: 6 High Pressure Pumps with Frequency ConverterIsobaric recovery system.
Business Case INEXA-Bahrein Plant
30% Save
Energy
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SWRO Plant 3500m3/dayLocated: Bahrein - AsryCostumer: Gulf House Markets.Water costs increased from 0,35dinares/m3 to 0,75dinares/m3Technology installed: 6 High Pressure Pumps with Frequency ConverterIsobaric recovery system.
30% Save
Energy
Business Case INEXA-Bahrein Plant
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SWRO Plant 3500m3/dayLocated: Bahrein - AsryCostumer: Gulf House Markets.Water costs increased from 0,35dinares/m3 to 0,75dinares/m3Technology installed: 6 High Pressure Pumps with Frequency ConverterIsobaric recovery system.
30% Save
Energy
Business Case INEXA-Bahrein Plant
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Conclusions
• Energy efficiency in SWRO Plants has improved significantly thanks to different technology improvements
• Big SWRO pump have developed • Economy of scale
• Optimized efficiency of centrifugal technology
• With High efficient technologies the same or increased efficiency can be obtained
• Positive displacement pumps allow highest efficiency.
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Conclusions
Room for improvement is possible!• More efficient motors • Implementation of Drives
• New Plants• Exisitng Plants
• Positive displacement pumps• Isobari energy recovery devices accepted as state of the art ERD
• This analysis is based on Efficiency• Life cycle cost analysis with CAPEX needs to be implemented.• In general the analysis is favorable for APP / Isobaric / Drives• Energy Price is a key factor (however, analysis is based on
Efficiency)
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Gracias
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