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SOLAR-BIOGAS HYBRID POWER GENERATION SYSTEM

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SOLAR-BIOGAS HYBRID POWER GENERATION SYSTEM

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SOLAR-BIOGAS HYBRID POWER GENERATION SYSTEM

  1. 1. SOLAR-BIOGAS HYBRID POWER GENERATION SYSTEM ANU . A . N S7 . E ROLL NO : 101
  2. 2. Contents 1.Introduction 2.Purpose 3.Solar power system 4.Working 5.Biogas plant 6.Types 7.Conversion of biogas into electricity 8.Hybrid system 9. Future scope 10.Conclusion 11.Refernces. 2
  3. 3. Introduction  Hybrid – term describes a combined power and energy storage system.  A hybrid energy system usually consist of two or more renewable energy sources combined together to provide better efficiency.  Solar technology combines with biogas technology to form a hybrid system.  It has a huge positive impact on the power sector of country. 3
  4. 4. Purpose  Consumers are not provided with proper supply  Inadequate power generation  High dependency on natural gas  Over population  Limited use of renewable energy sources 4
  5. 5. Solar Power System o Solar panels o Charge controller o Battery system o Inverter Fig 1. Simple PV cell 5
  6. 6. Working  Solar panels are the power source for all photovoltaic(PV) installation.  A charge controller prevents overcharging and may protect against overvoltage, which can reduce battery performance or lifespan.  A battery system is used for storing output power.  An inverter converts dc power to ac . It has inbuilt protection against short circuit, overheating .etc. 6
  7. 7. Principle  Photovoltaic means “electricity from light”.  They are solid state semiconductor device.  Produces electricity when exposed to light. 7
  8. 8. Cont.8  Metal surface is exposed to sunlight  Electrons in the valence band absorbs energy and jump to the conduction band and becomes free.  The movement of this free electrons causes the flow of current. Fig 2.Working principle of PV cell.
  9. 9. Cont.9
  10. 10. What is BIOGAS?  Gaseous mixture of methane,CO2,H2S and several other gases formed by the biological breakdown of organic matter.  Process takes place in an oxygen deficient environment.  It is counted as an eco-friendly bio-fuel.  Biogas contains 60% of methane and carbon dioxide.  It can be used as a substitute for LPG and CNG. 10
  11. 11. TYPES There are mainly two types:  Fixed dome type biogas plant  Floating gas holder type of biogas plant. 11
  12. 12. Fixed dome type biogas 12  Biomass is mixed with equal quantity of water and forms slurry.  Slurry is fed to the digester through inlet tank.  When digester is partially filled, tank is left untouched for two months.  Anaerobic fermentation takes place.  As a result biogas starts collecting in the dome.  Spent slurry is collected from outlet tank and used as manure.  Biogas is collected through gas control valve as per the requirement. Fig 3 Fixed dome type
  13. 13. Floating gas holder  Biomass is mixed with equal quantity of water.  Slurry fed to inlet chamber using inlet pipe.  Plant left unused for two months  Anaerobic fermentation takes place and produces biogas.  Biogas being lighter rises up and starts collecting in the gas holder.  Gas valve of the gas holder is opened to get the biogas. Fig 4.Floating gas holder type 13
  14. 14. Conversion of biogas into electricity Fig 5.Conversion of biogas into electricity 14
  15. 15. Cont.  Biogas produced is used as a fuel in the combustion engine.  Fuel is converted into mechanical energy which drives a generator.  Generator produces electricity. 15
  16. 16. Hybrid System16 Fig 5.Diagram of a hybrid system
  17. 17. Working  It is a combination of solar and biogas power generation.  Solar cells convert solar energy into electrical energy.  A voltage regulator regulates the output power and store in the DC control unit.  Biogas fuel is converted into electrical energy by means of a generator.  A rectifier converts ac to dc.  The output is regulated by a voltage regulator and stored in the DC control unit. 17
  18. 18. Cont.  DC output can be obtained directly.  Output may be stored in the day time in the battery bank.  AC output can be obtained by using a inverter. 18
  19. 19. Advantages  Efficient use of renewable resources.  Non polluting.  Economical.  Provides nutrient rich manure for plants.  Continuous power supply.  Controls pollution by the disposal of waste. 19
  20. 20. Disadvantages  High initial cost  Requires large area  Difficulty in proper disposal waste of biogas plant. 20
  21. 21. Future scope  Conversion of biogas into electricity using fuel cells.  Technical knowledge of digestion, electric power generation process and good management is required for profitable operation Many researches are still going on to reduce following drawbacks:  High initial cost.  Methane forming bacteria is sensitive to thermal variation. . 21
  22. 22. Conclusion  Power generation using renewable energy sources.  Provides stable power source.  Healthy environment. 22
  23. 23. References  Kanwardeep Singh, ”Study of solar/biogas hybrid power generation”, Thapar University,Patiyala,2010.  Alliance for Rural Electrification(ARE),”Hybrid power systems based on renewable energies”.  "Energy Sources: Solar". Department of Energy. Retrieved 19 April 2011.  International Energy Agency (2014). "Technology Roadmap: Solar Photovoltaic Energy" (PDF). http://www.iea.org. IEA. Archived from the original on 7 October 2014. Retrieved 7 October 2014 23
  24. 24. QUESTIONS ???? 24
  25. 25. 25 THANK YOU…
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SOLAR-BIOGAS HYBRID POWER GENERATION SYSTEM

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