Solar thermal technologies FOR POWER GENERATION

SOLAR THERMAL TECHNOLOGIES FOR POWER GENERATION BY S.K.Singh Scientist F Solar Energy Centre • • • • • Parabolic Trough Solar Electric Generating System (SEGS) Central Receiver Power Plant Dish Sterling System Solar Chimney Power Plant Solar Pond Power Plant Temperature and concentration ratio of the various solar thermal collector technologies Technology T (°C) Concentration ratio Tracking Flat plate collector 30–100 - Solar pond 70–90 - Solar chimney 20–80 - Evacuated tube collector 90–200 - Non imaging trough 90–200 One-axis CLFR 260–400 8–80 One-axis Parabolic trough 260–400 8–80 One-axis Heliostat field 500–800 600–1000 Two-axis Central receiver Dish concentrators 500–1200 800–8000 Two-axis Technology option Cost break-up of 50 MW Solar thermal power plant Parabolic trough Trough without Evacuated Receiver Wednesday, October 13, 2010 10 Development of Simulation Package   Simulate performance for an entire solar thermal power plant   GUI for data input and output Model library for thermodynamic properties (using empirical equations) of working fluids and equipment Instantaneous and Interval based simulation GRAPHICAL USER INTERFACE OF THE SIMULATOR Development of a Modular Central Receiver Concentrated Solar Power Plant for Decentralized Power Generation Schematic Diagram Critical components for solar thermal power     Receiver Heliostat design Thermal storage Solar power tower controls • • • • • Sunborne proprietary storage material Thermal conductivity: 10 times of rock Heat capacity: times of rock Can be molded into bricks Simplifies the design of the system TS Preliminary System Layouts Preliminary Simulation Parameters Research, development and demonstration of indigenously-developed Solar Dish technologies Consortium Partner Megawatt Solutions Pvt Ltd  Solar Energy Center (SEC Project Specification  Design and demonstrate a field of interconnected dish concentrators each of 90m2 aperture area providing heated thermic fluids at up to 400degC Objectives Assessment of: Energy Collection Performance Concentrator Tracking Control Thermal Receiver Performance Pipe field Performance Concentrator Structure Performance Reflector Performance Sub-component Performance and other Solar Dish Concentrator -an indigenous development project MWS and SEC Principle Of Operation of a Solar Dish S u n Sun’s rays fall on dish and get concentrated on a receiver at all times throughout the year This concentrated solar energy heats up a cold fluid upto very high temperatures (400degC) The solar heat at high temperatures can be used as process heat in Industries, for power generation and for refrigeration /cooling Objective: A dish concentrator of 90 sqm aperture area providing heated thermic fluid at around 400C Assessment of: Energy Collection Performance Concentrator Tracking Control Thermal Receiver Performance Pipe field Performance Concentrator Structure Performance Reflector Performance Sub-component Performance and other Application: Industrial process heat Dish Technology Offers Highest Output To Any Other Concentrator Technology [...]... Concentrating collectors Performance 21 Concentrated solar power plant using parabolic trough design Concentrated solar power plant using parabolic trough design Central Receiver Power Plant Central Receiver Power Plant Central Receiver Power Plant Solar Chimney Power Plants Solar pond Solar pond Dish stirling Stiriling Engine Highlights the key features of the three solar technologies Parabolic trough...Arun Solar Dish Source: Solar Thermal Systems for Industrial process applications Dr Sirish Kedare Wednesday, October 13, 2010 11 Factor influencing Solar Concentrated Technology Direct normal Irradiance (DNI) Ambient Temperature EFFICIENCY Wind Velocity Latitude Effect Required Temperature Ta- Td / DNI Latitude Effect Concentrator trough Concentrator trough Solar trough Flat Plate... Prototype Demonstration AvailableDemonstration Technology Development Risk Low High Medium Storage Available Limited Battery Yes Hybrid Designs Yes Yes Yes (p) = predicted; (d) = demonstrated; 50 KW POWER PLANT AT SOLAR ENREGY CENTER TEMPERATURE-ENTROPY DIAGRAM ... Receiver Power Plant Solar Chimney Power Plants Solar pond Solar pond Dish stirling Stiriling Engine Highlights the key features of the three solar technologies Parabolic trough 50kW-100MW Dish/Engine Power Tower 5-25 kW 10-200 MW Operating Temperature (ºC/ºF) 390/734 750/1382 565/1049 Annual Capacity Factor 23-50 % 25 % 20-77 % Peak Efficiency 20%(d) 29.4%(d) 23%(p) Net Annual Efficiency 11(d)-16% ... Concentrated solar power plant using parabolic trough design Central Receiver Power Plant Central Receiver Power Plant Central Receiver Power Plant Solar Chimney Power Plants Solar pond Solar pond... Solar Electric Generating System (SEGS) Central Receiver Power Plant Dish Sterling System Solar Chimney Power Plant Solar Pond Power Plant Temperature and concentration ratio of the various solar. .. option Cost break-up of 50 MW Solar thermal power plant Parabolic trough Trough without Evacuated Receiver Wednesday, October 13, 2010 10 Arun Solar Dish Source: Solar Thermal Systems for Industrial