RCB-UG-Alim

7/31/2019 RCB-UG-Alim

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ENERGY CONSERVATION FOR TEXTILE WET

PROCESSING INDUSTRIES BY OPTIMIZINGELECTRICAL POWER SYSTEM

Reed Consulting Bangladesh Ltd.

BY:MD. ABDUL ALIMCEOWELLMAKE ENGINEERING & TECHNOLOGY


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ELECTRICAL SYSTEM EVALUATION

A small improvement in electrical systemhas multiple positive impacts on total

electrical energy system in

Generation

Distribution

Consumption

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SAVINGS OF ELECTRICAL ENERGY

The electrical system needs to be studied properlyprior to take any step for achieving energy efficiency.Be remember that

SAVINGS MUST BE ACHIEVED WITHOUTSACRIFICING PURPOSES

Beside savings following issues must be considered:

System safety and equipment safety

Complexity of distribution networkSystem flexibility & ease of operation

Troubleshooting & maintenance issues

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CONSIDERATIONS FOR ELECTRICAL ENERGY SAVINGS

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Efficient utilization of resources through

Monitoring

Prioritizing

Load management


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Efficient distribution network through

Maintaining & practicing electrical norms

Proper sizing of cables & wires

Proper sizing of PFC (power factor correction)

Proper placement of PFC in distribution network


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Optimization of electrical load & consumption

Implementing energy efficient technologies

Implementing energy efficient practices

Using energy efficient devices & appliances

Using high energy efficient motor

Using energy efficient servo motor & electronic ballast


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Coal

100 units 35 units 33 units

100 units saved at

point of use plug

300 units savedat the power plant

Energy

transformation

Energy

distribution

Efficient generation matters but efficient use

has more impact, more quickly



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Energy conservation

Reduced consumption withreduced results

Energy efficiency withsame results

EFFICIENCY IS NOT INEFFECTIVENESS


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Efficient devices and efficient installation (10 to 15 %)

Low consumption devices, insulated building

Optimized usage of installation and devices (5 to 15%)

Turn off devices when not needed, regulate motors or

heating at the optimized level

Permanent monitoring and improvement program (2 to 8%)

Rigorous maintenance program, measure

and react in case of deviation

30% savings are available today

PassiveEE

Active

EE



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Sustain the savings!

Savings might be lost quickly due to:

Unplanned, unmanaged shutdowns of equipment and processes

Lack of automation and regulation (motors, heating)

No continuity of behaviours

Energy

Consumption

100%

70%

Efficientdevices

andinstallation

Optimizedusa

ge

viaautomatio

n

Monitoring & Maintenance

Up to 8% per year is lost withoutmonitoring and maintenance program Up to 12% per year is lost withoutregulation and control systems

Time

Control andmonitoring

technologieswill sustainthe savings



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Lifecycle solutions for energy efficiencyEnergy Audit& Measure

Active Energy Efficiency

Optimise throughautomation &

regulation

Monitor,maintain,improve

Fix the basics

Low consumption devices,insulation material, power

factor correction

HVAC control, lighting control,variable speed drives

Meters installation, monitoringservices, EE analysis software



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POWER FACTOR CORRECTION

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BASIC CONSIDERATIONS:

Accurate sizing

Matching with load demand

Operation with load side in all source mode

Generator characteristics

Harmonic issues
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Source/Generator

Load/Motor

Real power

Reactive power

Reactive powerPFC

Capacitor bank

Customernetwork

Source/Generator

Load/Motor

Real power

Customernetwork


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TECHNICAL CONSIDERATIONS:

Optimum level of compensation

Compensation at transformer terminals

Example of PFC application
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MONITORING & LOAD MANAGEMENT

FACTORS UNDER CONSIDERATIONS:

Load Curve Generation

Rescheduling of Loads Storage of Products/in process material/ process utilities like refrigeration

Shedding of Non-Essential Loads

Operation of Captive Generation and Diesel Generation Sets

Reactive Power Compensation


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MONITORING & LOAD MANAGEMENT

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Load management

Consumption

Day Night

Blue area = billed consumption

Peak sets demand charge

Bill = demand charge + consumption + other elements of the tariff

Shifting loads can help avoid peaks


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AN ELECTRICAL OVERVIEW OF FACTORIES

Electrical information details

Single line diagram of electrical distribution of TARASHIMA

Single line diagram of electrical distribution of OEKOTEX

Single line diagram of electrical distribution of CASSIOPIA

Single line diagram of electrical distribution of GMS

Single line diagram of electrical distribution of NORTHERN

Single line diagram of electrical distribution of ECHOTEX

Single line diagram of electrical distribution of SF WASHING Single line diagram of electrical distribution of NAZ
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THANK YOU

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