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Renewable Energy & Overview in Bangladesh


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In this presentation contain renewable energy definition, classification, overview in Bangladesh & why should prefer it?

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Renewable Energy & Overview in Bangladesh

  1. 1. RENEWABLE ENERGY In BANGLADESH MD. Shadrul Alam Mechanical Engineering, KUET Roll: 1305056 Presentated By
  3. 3. Background Energy can be classify into two types. Renewable energy is one of them, it offers a carbon-free alternative to traditional fossil fuels. Renewable energy is from an energy resource that is replaced by a natural process that are replenished constantly such as sunshine, wind, wave power, flowing water (hydropower), biological processes such as anaerobic digestion, and geothermal heat flow. Renewable energy sources, that derive their energy from the sun, either directly or indirectly, such as hydro and wind, are expected to be capable of supplying humanity energy for almost another 1 billion years, at which point the predicted increase in heat from the sun is expected to make the surface of the earth too hot for liquid water to exist. Prior to the development of coal in the mid 19th century, nearly all energy used was renewable. Almost without a doubt the oldest known use of renewable energy, in the form of traditional biomass to fuel fires, dates from 790,000 years ago. In 200 BC - Europeans first use Harness Water Energy to Power Mills. Bangladesh Agricultural University and Bangladesh Council of Scientific and Industrial Research (BCSIR) launched biogas technology in Bangladesh in early 1970s. Bangladesh has planned to produce 5% of total power generation by 2015 & 10% by 2020 from renewable energy sources like wind, waste & solar energy.
  4. 4. Types of Energy Solar The sun has produced energy for billions of years. Solar energy is the solar radiation that reaches the earth. Tidal Tides are caused by the pull of the moon and sun, and also the rotation of the earth. Near the shore, water levels can vary. It is the motion of the waves which turns the turbine. Wind Wind is air in motion. It is produced by the uneven heating of the earth’s surface by the sun. Hydroelectric Hydroelectric energy is energy derived from the movement of water. It falls downward due to gravity. When it moves, it has kinetic energy which is used by turbine. Geothermal Geothermal energy can be used as an efficient heat source in small applications .It is heat from the earth. Biomass Biomass is organic material which has stored sunlight in the form of chemical energy. Biomass fuels include wood and many other martials.
  5. 5. Overview in Bangladesh Solar Energy The government is gradually meeting part of the lighting and cooling load of public offices by installing solar panels. Bangladesh receives an average daily solar radiation in the range of 4-5 kWh/m².Power Division has initiated a programme to generate 500 MW of solar-based electricity. Most of the capacity addition is from Solar Home Systems (SHS) implemented by Infrastructure Development Company Limited (IDCOL), a government-owned financial institution.The international community recognises Bangladesh's SHSs as the fastest growing solar power dissemination programme in the world. Under the Hill Tracts Electrification Project BPDB has already implemented three solar projects in Juraichori upazila, Barkal upazila &Thanchi upazila of Rangamati District total of 173.81 kWp Solar PV Systems have been installed. Under this programme, projects for electrification of rural health centres, educational institutions, E-centres at union levels, religious establishments and remote railway stations are required to be implemented by authorities concerned. Private sector is expected to implement commercial projects like Solar Irrigation, Solar Mini Grid, Solar Park and Solar Rooftop applications.
  6. 6. Overview in Bangladesh Hydroelectric Energy Today, hydropower makes up the largest share of electricity generated from renewable sources as the global capacity reaches 1,000 GW. The only hydroelectric power plant was established at Kaptai with present installed capacity of 230 MW. Bangladesh Power Development Board (BPDB) identified two other sites at Sangu (140 MW) and Matamuhuri (75 MW) for large hydropower plants. Further exploitation of hydropower appears to be limited due to flat terrain of Bangladesh. Several studies have identified a few sites having potential ranging from 10 kW to 5 MW, but no appreciable capacity has yet been established. Micro/ mini-hydro have limited potential in Bangladesh with exception of Chittagong Hill Tracts region. A 50 kW micro-hydro plant was installed at Barkal Upazila of Rangamati district in 2005. BPDB run two ongoing projects these are 50-70 kW Mohamaya Irrigation-cum-Hydro Power Project at Mirersorai, Chittagong and Rehabilation of 50 kW Micro-Hydro Power Plant at Barkal Upazila of Rangamati district.
  7. 7. Overview in Bangladesh The potential of wind energy is limited to coastal areas, off-shore islands, rivers sides and other inland open areas with strong wind regime. In order to generate electricity from Wind Energy, BPDB installed 4x225 KW = 900 KW capacity grid connected Wind Plant at Muhuri Dam (0.9 MW) area of Sonagazi in Feni & Kutubdia Island (1.0 MW) in Cox's Bazaar. Currently, Power Division is implementing a project with support from USAID to develop wind map for Bangladesh. Wind Power Bio-EnergyBio-energy is energy derived from any form of biomass, including bio-heat, bio-power, and bio-fuel. Estimated potential of 4 million biogas plants about 70,000 plants have been established throughout the country. Two rice husk-based power plants of 250 kW at Gazipur and 400 kW at Thakurgaon, and seven poultry waste-based power plants at different sites with aggregated capacities exceeding 1 MW, have been established at the initiative of private sector with support from Infrastructure Development Company Limited (IDCOL)
  8. 8. Overview in Bangladesh Hybrid System The working principle of solar wind hybrid system, is the combination of solar energy system and wind energy system. The block diagram of solar wind hybrid system is shown in the figure in which the solar panels and wind turbine are used for power generation. Connect store solar, wind and grid energy at home and office whit custom designed batteries. 7.5 MW off Grid Wind-Solar Hybrid System with HFO/Diesel Based Engine Driven Generator in Hatiya Island, Noakhali. Another project of 1000 KW Wind Battery Hybrid Power Plant at Kutubdia Island was completed in 2008 which consists of 50 Wind Turbines of 20 kW capacity each.
  9. 9. Energy Efficiency In the chart, there have 2.86% renewable energy. Rather than there have many off-grid energy generation maximum of these uses in village and for private purpose. For the efficient use of energy, steps have been taken to encourage/promote the use of heat reflective glasses for Passive Cooling of commercial buildings, Solar Powered Security Lighting in urban buildings and replacement of Diesel/Electric Pumps by Solar Irrigation Pumps, replacement of Electric/Gas Dryer by Solar Dryer, replacement of Electric/Gas Heater by Solar Water Heater among the consumers of distribution zones of BPDB. Electricity Week Program has already been launched since 2010 with a view to promote energy savings campaigns at consumer and school level. This program is nationally observed on 7th December each year. Gas 53.01% HFO 17.95% HSD 6.62% Imported 3.85% Renewable 2.86% Captive 14.11% Coal 1.60%
  10. 10. Why Renewable Energy? Therefore, renewable energy is one of the preferable green sources of energy for next decades.  Renewables are great for our energy portfolio because they are inexhaustible and won’t pollute by emitting toxic chemicals and gases. One major advantage with the use of renewable energy is that as it is renewable it is therefore sustainable and so will never run out.  The use of renewable energy has risen considerably in recent times, both in developed & developing countries. REN21's Renewables 2014 Global Status Report indicates that renewable energy provided an estimated 19% of global energy consumption in 2012 compared to 16.7 % in 2010. International Energy Agency projects that electricity generation from renewables may overtake natural gas by 2015 and perhaps coal by 2035.  Even more importantly, renewable energy produces little or no waste products such as carbon dioxide or other chemical pollutants, so has minimal impact on the environment. One disadvantage with renewable energy is that it is difficult to generate the quantities of electricity that are as large as those produced by traditional fossil fuel generators. Otherside non renewable energy like as Nuclear power is politically very sensitive and its technology is very difficult to obtain. By far it is the most risky in terms of damage it can cause in time of man-made or natural disasters.  Recently a number of researchers, organizations and Bangladesh Power Development Board (BPDB) performed series of studies to generate wind profile data in Bangladesh. It has been reported that the wind speed in Chittagong, Cox’s Bazar, Kuakata, Moheshkhali, Feni and Noakhali coastal regions are greater than 6.5 m/s. These wind speeds in the coastal regions are suitable for both water pumping and electricity generation.