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Wind Power Prospects

in BangladeshA. Hasib Chowdhury, PhD

Dept. of EEE, Bangladesh University ofEngineering and Technology

September 2012

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This Presentation

About Bangladesh

Wind speed study

Wind data

Wind power generation in Bangladesh

Windpumping in Bangladesh Potential users

Problems and limitations

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Bangladesh

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Bangladesh contd.

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Bangladesh contd.

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Bangladesh contd.

Elevation map ofBangladesh

[Renewable Energy, 29(5), April 2004]

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Wind Speed Study

Little systematic wind speed study

Data collected by meteorology department meant for

weather forecasting Insufficient for determining wind energy potential

1982 Early study report from 30 yearsmeteorological data

Wind speeds in Chittagong and Cox's Bazar districtspromising

Only coastal area and bay islands assumed promising forelectricity generation

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Wind Speed Study contd.

1995 Measurement in Patenga (Chittagong) at aheight of 20 m

Wind speed higher than values obtained by meteorological

department

1996-97 Study at seven coastal sites at a heightof 25 m by Bangladesh Centre for Advanced Studies

1996-97 Study with technical assistance from GTZ

2001-2002 Bangladesh Council of Scientific andIndustrial Research (BCSIR)

2004 SWERA study

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Wind Data contd.

Wind speed (m/s)data set for 30 melevation and

typical countrysideterrain ofBangladesh

[Renewable Energy, 29(5), April 2004]

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Wind Data

Wind speed at 25 m height measured by BCAS

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Wind Data contd.

Wind speeds higher in coastal areas

Exhibit strong seasonal cycle

lower in September to February and higher inMarch to August

Exhibit a diurnal cycle

peaking in afternoon and weakest at night

Wind speed is much higher in summer (dueto monsoon wind) than in winter

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Wind Data contd.

Monthly variation of wind speed for five selected sites

A. K. Azad, M. M. Alam, Dept. of Mechanical Engg. BUET, 2012

Max. velocity5.97 m/s inAugust inKuakata

Min. 1.20 m/s

in Decemberin Rauzan

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Wind Data contd.

A. K. Azad, M. M. Alam, Dept. of Mechanical Engg. BUET, 2012

Frequency distribution of wind speed at Kuakata from Jan to Dec.

Frequency ofwind speed519 m/sfrom April toSept.

Suitable forelectricitygeneration

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Wind Data contd.

Velocity Duration Curve for Kuakata

Wind velocitythroughout theyear

68.7% time 4m/s or above

45% time 5m/s or above

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Wind Power Generation

in Bangladesh Only two wind power generation

projects in Bangladesh

Muhuri Dam wind power project (2005)

Kutubdia Island wind power project(2007-08)

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Wind Power Generation

in Bangladesh contd. Muhuri Dam

Project (2005)

4 X 225 kWVestas turbine(diameter 27 m)

First grid-connectedwind plant in

Bangladesh Estimated annual

production: 2 GWh (foran equivalent of 2,500hours of full load/year)

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Wind Power Generation

in Bangladesh contd.KutubdiaIsland

Wind battery hybridplant

50X20 kW turbineson 50ft tower

WTG : China

WTGs charge1,000, 12V 200AHbatteries

11KV transmission

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Wind Power Generation

in Bangladesh contd.Cyclone Sidrcrossed the

coastal areas ofBangladesh(2007)

15ft tidal surgedamaged

equipment andsupplies

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Wind Power Generation

in Bangladesh contd. 11 small wind turbines in various

coastal sites installed by BRAC

Grameen Shakti 2 wind generators of 300 W and 1 kW at

a Chakoria Shrimp Farm

4 small wind generators (3x1.5 kW + 10kW) in Barguna

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Windpumping in

BangladeshBCAS installed awindpump in Patenga

(Chittagong)40 ft high tower with 12blades rotor

Average water outputbetween November andJanuary ~8000 liters/day

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Wind pumping in

Bangladesh contd. Local Government Engineering

Department set up number of 27 ft

high wind pumps at Tangail, Kustia,Cox's Bazar

Indigenously made, 0.5 h.p. (385W) ata wind speed of 4m/see

Output - 25 liter/minute at wind speedof 3.2 m/see

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Potential Users

Wind turbines driven pumps for drinkingwater and irrigation

Industries along the Bay of Bengal coastline Shrimp/fish/poultry farming, fish processing, ice

making, salt production, fish-mill industries,hatcheries

Many industries in areas without electricalgrid, presently use diesel generator

Number of islands far from grid

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Problems and Limitations

Lack of sufficient and reliable data

Absence of comprehensive policy

framework

Lack of commitment on the part of thegovernment

Lack of human resource for windenergy management