Welcome

1Implementation of Different Techniques Towards Improvement of Energy Efficiency and Safety of Electrical Installation in Bangladesh

2Implementation of Different Techniques Towards Improvement of Energy Efficiency and Safety of Electrical Installation in BangladeshSupervised byMd. Fayyaz Khan, PhDProfessor, dept. of EEE

Group MembersIstiak Mahmood Ayon ID:021 101 005MD. Ashraful Anowar ID:021 101 018MD. Tuhin Reza ID:021 101 025MD. Tareq Ur Rahman ID:021 101 035

3Limitations in industries

Safety concerns Improper Earthing System Absence of Lightning Protection Insufficient Fire Fighter system

Efficiency ImprovementsUnused rooftop can be used for solar energyImproper use of highly efficient electrical gadgets

4Project ObjectivesEfficiency ImprovementImplementation and cost calculation of solar energy.Design of intelligent load control device to ensure proper use of powerSafety Aspects Design of Lightning Protection Design of Fire Fighting System

5What is Energy efficiency ?

Using less energy to provide the same outputReduction in Efficiency

Due to heat dissipation.Due to improper insulation.Unhealthy working environment in factories.

How to improve the system? Proper room insulation. Proper ventilation system. Equipment needs regular preventive maintenance. Intelligent device that can reduce power loss. We developed two techniques to improve the efficiency of the system 1) Automatic load control device. 2) Minimizing the heat gain and generating additional power supply by implementing solar panel on the roof top of a factory.

Automatic Load Control DeviceDetects the power consumption under different load conditions.Determines whether the power consumption is high or low.Detects whether the user taking the power legally or illegally. Disconnects the SDB during illegal power consumption. There are two parts of the Device Disconnects the heavy and unessential loads during stand by operation of the generator. Measuring the power consumption during generator supply it gives intelligent decision.

Automatic Load Control Device

Part 1 (Disconnects the heavy loads during load shedding) Hall effect sensor Solenoid Microcontroller Relay Transformer 220/12 Rectifier etc.

Algorithm

Automatic Load Control Device

Part 2 (Measures the power consumption in the load endand determines whether it is low or high)

Hall effect current sensor Solenoid Amplifier Rectifier etc.

How does the hardware work

Solar panel implementation in a factoryReduce heat gain from the ceilingIncrease in Energy efficiency of the machinesIncrease the lifetime of the machinesGives additional energyDraw less amount of power from the PDBCost effective

Design For Knit Concern Printing Unit Ltd.

Area of the roof = 10,000 sqr.ftImplementation area of the solar panel = 5,000 sqr.ftSolar panel of 200 wattConsidering average output at average sun sunshine = 150 wattlength of the panel = 4.86ft Width of the panel = 3.255ftAngle between the panel and the surface = 23 degreesArea for each solar panel = 19.42056 sqr.ft

Production of electricity from the solar panelTotal Number of solar panel implemented = 258Total Power = 38.7 KW

# Lights = 360 (10watt) # Fans = 360 (40watt) # Swing Machine = 150 (100watt) # Exhaust Fan = 12 (370watt 500mm Blade)

Total Load = 37.4 KW

15Necessity of Safety

Protect electrical equipment Protect building from damage Saves life

One of the most important part of safety is earthing Without earthing system people get shock in fault condition

In Bangladesh most of the industries dont use proper earthing systemEarthing resistance more than 1 ohm which is not preferable

With earthing systemPeople doesnt get shock in fault time The fault current goes through the earthing

Three types of earthing systemTN system IT system TT systemIn Bangladesh commonly TT system is used

Each installation has its own local connection to earth

Independent of any earthing connection at the generator.

Protective earth conductor(PE) cost is low

Easy to install

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Our Suggestion to Industry Each industry should install earthing system properly

Earthing system should check at least two time within a year

if earthing resistance become more than 1 , following step should be taken- - place the erathing rod where earth resistance is minimum - use low resistivity earthing rod

20Designing a lightning arrester to protect the solar panel in a medium industry Importance1) Lightning arrester protects buildings and electrical equipments from damage.2) Save lifes.Application area1) Top of a building2) Transmission Line3) Communication Tower etc.most of the industries dont install the lightning arrester

Designing a lightning arrester to protect the solar panel in a medium industry

Protection Area = 526 sq. feet

Major equipment of lightning arrester design

Air terminalCopper conductorEarthing rod

Protective radius calculation of our designConsider air terminal as prevecton-2 model No. 6.60

For this model protective radius,

Rp =

Height , h = 5mProtective level, D= 20mTriggering advance

So ,Rp=

= 79 meter

Copper cable size calculation

Price list

Our Final lightning arrester design of that medium industry

SafetyFire Safety

Fire hazard is common phenomenon in Bangladesh. Most of the garments factory have no proper fire fighting system.

Two types of fire safety system:-

1)Conventional system

2)Addressable system

We suggest an effective and efficient fire fighter design for a garment factory

Advantages of small Zone system

Can give exact location of the fire.

Required small amount of water for distinguishing fire.

Cheaper because less connecting wire and energy required.Safety Three main elements of our design

Initiating device(smoke detector, Heat detector, )

Addressable control panel

Notification appliances(Bells, smoke control ,door holder)

SafetyInitiating devicesmoke detector

Two types of smoke detector1) Ionization Smoke Detectors2) Photoelectric Smoke Detectors

OKOKOK

Fault Detected

Fault DetectedControl PanelHow Control Panel Works?

24vSmoke detectorRNormal condition ,I=24/6000=.04AFault condition ,I=24/2 =12A=6k

Control PanelZONE 1ZONE 2ZONE 3ZONE 4ZONE 5ZONE 6ROOM 1ROOM 2ROOM 3ROOM 4ROOM 5ROOM 1ROOM 2ROOM 3ROOM 4ROOM 5ROOM 1ROOM 2ROOM 3ROOM 4ROOM 5ROOM 1ROOM 2ROOM 2ROOM 2ROOM 1ROOM 1ROOM 3ROOM 3ROOM 3ROOM 4ROOM 4ROOM 4ROOM 5ROOM 5

Control PanelZONE 1ZONE 2ZONE 3ZONE 4ZONE 5ZONE 6ROOM 1ROOM 2ROOM 3ROOM 4ROOM 5ROOM 1ROOM 2ROOM 3ROOM 4ROOM 5ROOM 1ROOM 2ROOM 3ROOM 4ROOM 5ROOM 1ROOM 2ROOM 2ROOM 2ROOM 1ROOM 1ROOM 3ROOM 3ROOM 3ROOM 4ROOM 4ROOM 4ROOM 5ROOM 5

Control Panel

ExitExit

Conclusion Use energy efficient electrical equipments. Use renewable energy in factories. Implementation of effective safety system. Ensure proper electrical safety like earthiing and equipotential bonding.

34Thank you Any question?