Biomass supported solar thermal hybrid power plant

Biomass supported solar thermal hybrid power plant

Guided byMrs. G. SravanthiPresented byN.ThulasiReddy(10891a0212)

CONTENTS

INTRODUCTIONSOLAR POWERBIOMASS POWERSOLAR TROUGH BIOMASS HYBRID POWER PLANT CONCLUSION

INTRODUCTION

Energy is the most important resource in the economic development of a country. The conventional methods of electricity generation are experiencing mounting pressure from the ever-increasing demand rate .This has led to the growth of other non-conventional methods of electricity generation .Among other renewable energy sources, solar and biomass have lately encountered a prompt growth in most parts of the world .Biomass and solar power bring the following advantages to the utilities supply business: The size to be incremented with the demand in load. The lead-time to build is smaller compared to the conventional plants, which allows the reduction in regulatory and monetary based threats. The detrimental effects of pollution due to fuel are eliminated and price of fuel is also very low because of the assortment of sources these provide.

SOLAR POWER Electricity may be derived from solar radiation by two methods: Firstly, by following a two step approach that includes deriving heat from radiation and then converting that heat into electricity. Secondly, by using photovoltaic conversion systems for directly obtaining electricity from the solar radiation. Schematic of a solar-thermal power plant

Methods of Solar Energy Conversion

Parabolic dishesTowersFresnel reflectorsParabolic troughsBIOMASS POWERWhat is biomass? Biomassisbiological materialderived from living, or recently living organisms. Wood remains the largest biomass energy source today ; examples include forest residues (such as dead trees, branches andtree stumps), yard clippings, wood chips and evenmunicipal solid waste. Residues from agricultural products which include straw; rice ,coconuts, or coffee husks; cotton or maize stalks; sugar cane bagasse ; and forest conservation products like verge grass and thinning can also be used for biomass fuels.

Properties Influencing the Use of Biomass as a Fuel for Electricity Generation Moisture content

Ash content

Volatile matter content

Elemental composition

Heating value

Bulk density

Energy transformations in biomass power plant

1. combustion is required to obtain useful energy from biomass material. 2.The steam is used to generate electricity from the thermal energy derived from the combustion process .SOLAR TROUGH BIOMASS HYBRID POWER PLANT This hybrid power plant can be designed with two formats. A single Power Conversion Unit (PCU) .A separate PCU, for each of the solar trough and the biomass technologies. Hybrid power plant model with two PCUsAdvantages:The two systems connected separately with a sole PCU is much simpler. The overall efficiency is better.Drawback: The system experiences a large increment in costs due to separate PCU installations for each

Hybrid power plant model with single PCU.The heat transfer fluid transfers the energy to the end of the solar trough. The energy input is the energy from the biomass fuel and the heat transfer fluid takes the output thermal energy to the PCU.The energy input of the PCU model takes into account the combined thermal energy from the solar trough and the biomass systems. The output is the power produced by the hybrid solar trough biomass power plant .

Plant Schematic HybridSolar Thermal Biomass PlantPumpSteamTurbineGeneratorCondenserHeat ExchangerBiomass Gasifier

Two-Stage Boiler

ElectricityParabolic Troughs14.As observed, the solar and biomass loops are in parallel to allow operation with one or both of the energy resources.The do not contain energy storage installations.The major components in the scheme happen to be the collectors, the fluid transfer pumps, the power generation system.Operational design allows maximum solar energy usage and the biomass generated steam from the boiler provides power during the cloudy intervals.CONCLUSIONThe various forms of solar and biomass forms of generation that have significantly affected the production of electricity with minimal or no dependence on fossil fuels.This hybrid power plant presents a biased solution for small to medium scale power generation using renewable solar and biomass energy in developing nations.THANK YOU.