A MINOR PROJECT REPORT ON SUBMITED TO CHHATTISGARH SWAMI VIVEKANAND TECHINICAL UNIVERSITY , BHILAI BACHELOR OF ENGINEERING IN MECHANICAL ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING RAIPUR INSTITUTE OF TECHNOLOGY,MANDIR HASUD, CHHATUNA, RAIPUR CG SESSION 2009-10SUBMITTED BY

HYDRO POWER

INTRODUCTION1) One of the most widely used renewable source of energy for generating electricity on large scale basis is hydropower 2) The power obtained from river or ocean water is called as hydropower 3) Hydropower is the renewable source of energy since water is available in large quantities from rain, rivers, and oceans and this is will be available for unlimited time to come

HISTORY- Nearly 2000 years ago the Greeks used water wheels to grind wheat into flour- In the 1700's, hydropower was broadly used for milling of lumber and grain and for pumping irrigation water - Appleton, Wisconsin became the first operational hydroelectric generating station in the United States, in 1882, producing 12.5 kilowatts (kW) of power - The total electrical capacity generated was equivalent to 250 lights- The largest and last masonry dam built by the U.S. Bureau of Reclamation was the Roosevelt Dam in Arizona between 1905-1911; its power output has increased from 4,500 kW to 36,000 kW - Still in use today, Niagra Falls was the first hydropower site developed for a vast quantity of electricity

TYPES OF HYDRO POWER PLANT1) Water wheels

2) Hydro power plants

3) Wave energy from oceans

4) Tidal energy

5) Damless hydro power

Based on Quantity of Water Available

1) Run-off river hydro plants with pond

2) Run-off river hydro plants with pond

3) Reservoir hydroelectric power plants

Based on the Head of Water Available

1) Low head hydroelectric power plants

2)Medium head hydroelectric power plants 3) High head hydroelectric power plants Based on the Nature of Load

1) Base load hydroelectric power plants 2) Peak load hydroelectric power plants

PRINCIPLE OF HYDRO POWER PLANT WATER CYCLEWater cycle in nature: Water surface evaporationPrecipitation of clouds Collected back to the oceans VAPORATION PRECIPITION RAINThe continuous cycle in which water changes from water vapor in the atmosphere to liquid water through condensation and precipitation and then back to water vapor through evaporation, transpiration, and respiration

Water cycle in the hydraulic power plant Water energies: Kinetic energy , Potential energyPROCESS / STAGES1) Water in reservoir2) Fall in turbine blade3) Shaft rotation4) Electric generation5) Flow back of water

COMPONENT AND WORKING OF HYDRO POWER PLANT 1) Dam

Location What is damClassification of damsStorage dams Diversion dams Detention dams Overflow dams Rockfill dams Gravity dams Gravity damDam structure and design

Storage damsTo impound water Purpose - Irrigation - Flood control - Power generationDiversion dams For diversion To provide sufficient pressureDetention dams To Minimize the effect of sudden floods To trap sediment Overflow dams They carry water discharge over their crests Rockfill dams Rock instead of earth Embankment dams hold back water by the force of gravity acting upon their mass Gravity dams Most gravity dams are made from concrete, a mixture of port land cement, water, and aggregates They are much thicker at the base than the top

2) Water reservoir Place behind the dam Height of water Potential energy 3) Intake or control gates Gates inside of the dam. Inlet gates 4) The penstock

To carries the water Controlled by the control gates 5) Water turbines Convert HYDROLIC energy to MECHANICAL energy6) Generators

Convert MECHANICAL energy in ELECTRICAL energy

7) Transformer

Converts the alternating current to high voltage current. Two coils: the supply coil and the outlet coil. Voltage required for various applications is 110V or 230V. Numbers of turns in outlet coil are double of supply coil, the voltage produced is also double. 8) Tailrace

Pipeline to drain the waterThe potential energy of water in the tailrace has been used to generate electricity

CASE STUDY OF HIRAKUND DAM

It was the first major multipurpose river valley project started after India's independence.INTRODUCTION Built across the Mahanadi river

Locatedabout 15 km from Sambalpur in the state of Orissa in India.HISTORYBuilt in 1956Length is about (26 km)

Construction history Project was proposed by Sir M. Visveswararya Foundation stone was laid by sir HOWTHRONE LEWIS on 15 march 1946 Pandit Jawaharlal Nehru laid the first batch of concrete on 12 April 1948. The dam was completed in 1953 and was formally inaugurated by Prime Minister Jawaharlal Nehru on 13 January 1957 The total cost of the project was Rs. 100.02 crores (in 1957). Power generation along with agricultural irrigation started in 1956, achieving full potential in 1966Hirakund is located at 2131N 8352E21.52N 83.87EGeographyIt has an average elevation of 160meters (524feet)As of 2001 India census Hirakund had a population of 26,397 DemographicsHirakund has an average literacy rate of 70% Power generation Nearly about 307 MW

People affected from the Dam Construction

StructureThe Hirakud Dam is a composite structure of earth, concrete and masonry Nearly 1.5 lakh people got affected by the Hirakud project.Nearly 22,000 family were displaced under the Hirakud dam project, an amount of Rs 12 crores was provided for payment of compensation to the affected people Ten km north of Sambalpur, it is the longest major earthen dam in the world The main dam has an overall length of 4.8 km spanning between two hills; the Lamdungri on the left and the Chandili Dunguri on the right. It also forms the biggest artificial lake in Asia, with a reservoir holding 743 km at full capacity, with a shoreline of over 640 km..

Total length of Dam: 15,748 Feet or 4800 Meter

Concrete Dam : 3,937 Feet or 1200 Meter

Earth Dam: 11,811 Feet or 3600 Meter

Left Dyke: 32,274 Feet or 9837 Meter

Right Dyke: 35,299 Feet or 10759 Meter

Maximum Height of Masonary Dam:200 Feet or 61 Meter

Maximum Height of Earth Dam:195 Feet or 59.5 Meter

Catchment Area: 83,400 kmTotal Power Capacity:275.5 MW

Details

(A) HYDROLOGICAL :-

(a)Catchment -83400 Sq. Kms (32200 sq miles)(b)Rain fall(mm)-OriginalRevised

SALIENT FEATURES(B)DAM AND RESERVOIR

Top dam levelR.L 195.680M.(R.L.642 ft.)Dead storage levelR.L 197.830 M(R.L 590 Ft)(c)SPILLWAYSpillway capacity 42450 cumecs (15 lakhs cusecs)Crest level- R.L. 185.928 M ( R.L. 610 ft.)(D)POWER GENERATION:Installed CapicityAt Burla- 5 x 37.5 - 2x24.0 = 235.50 MW At Chiplima- 3x24 = 72.00 MWTotal= 307.50 MW

ADVANTAGES & DISADVANTAGES OF HYDRO POWER PLANTAdvantages 1) No fuel required 2) Cost of electricity is constant 3) No air-pollution is created 4) Long life 5) Cost of generation of electricity 6) Can easily work during high peak daily loads 7) Irrigation of farms 8) Water sports and gardens 9) Prevents floods

DISADVANTAGES1) Disrupts the aquatic ecosystems 2) Disruption in the surrounding areas 3) Requires large areas 4) Large scale human displacement 5) Very high capital cost or investment 6) High quality construction 7) Site specific 8) Effects on environment 9) Safety of the dams