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stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
stirling radioisotope generator
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stirling radioisotope generator

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STIRLING RADIOISOTOPE GENERATOR

STIRLING RADIOISOTOPE GENERATOR

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  • 1. Seminar Guide - Ms. MANU SINGH Presented By : Md. PARVEZ ALAM Seminar Coordinator - Mr. NITIN SAXENA STIRLING RADIOISOTOPE GENERATOR
  • 2. <ul><li>1. INTRODUCTION </li></ul><ul><li>2. OBJECTIVES </li></ul><ul><li>3. COMPONENTS OF SRG </li></ul><ul><li>4. WORKING OF COMPONENTS OF SRG </li></ul><ul><li>5. ENERGY CONVERSION DIAGRAM </li></ul><ul><li>6. OUTCOMES </li></ul><ul><li>7. TECHNICAL CHALLENGES OF SRG DEVELOPMENT </li></ul><ul><li>8. CURRENT DEVELOPMENT PLANS </li></ul><ul><li>9. CONCLUSIONS </li></ul>
  • 3. <ul><li>What is stirling engine? </li></ul><ul><ul><li>It is a heat engine operating by the cylic compression and expansion of gas </li></ul></ul><ul><ul><li>The process occurs at various </li></ul></ul><ul><ul><ul><li>temperature levels </li></ul></ul></ul><ul><ul><li>Net conversion of heat energy </li></ul></ul><ul><ul><ul><li>to mechanical energy </li></ul></ul></ul><ul><ul><li>Mechanical energy electrical energy </li></ul></ul>
  • 4. <ul><li>Plutonium -238 fuel </li></ul><ul><ul><li>(generates the heat) </li></ul></ul><ul><li>Cladding </li></ul><ul><ul><li>(encases the fuel) </li></ul></ul><ul><li>Graphite heat source </li></ul><ul><ul><li>(protects fuel and clad) </li></ul></ul><ul><li>Converter </li></ul><ul><ul><li>(heat electricity) </li></ul></ul><ul><li>Radiator (removes excess heat) </li></ul>
  • 5. <ul><li>Stirling generator system outputs </li></ul><ul><ul><li>120Vac </li></ul></ul><ul><ul><li>60Hz, 130-140 watt of power </li></ul></ul><ul><ul><li>Continous power supply for ~14 years </li></ul></ul><ul><li>To potentially reduce the amount and cost of fuel(plutonium-238-dioxide) </li></ul><ul><li>To enable cost effective space exploration </li></ul>
  • 6. HEAT SOURCE STIRLING ENGINE PM-DC BRUSH GENERATOR DC-AC INVERTER DC-DC CONVERTER
  • 7. <ul><li>HEAT SOURCE </li></ul><ul><ul><li>It acts energy input of the entire system </li></ul></ul><ul><ul><li>Provide temperature difference needed to operate stirling engine </li></ul></ul><ul><ul><li>Output of heat source = input of stirling engine </li></ul></ul><ul><li>STIRLING ENGINE </li></ul><ul><ul><li>Prime mover of system </li></ul></ul><ul><ul><li>Cooling, compression, heating and expansion </li></ul></ul><ul><ul><li>Thermal energy mechanical work </li></ul></ul><ul><ul><li>Output of engine shaft of PM-DC generator </li></ul></ul>
  • 8. <ul><li>PM DC GENERATOR </li></ul><ul><ul><li>Mechanical work electrical energy </li></ul></ul><ul><ul><li>The output is ‘dc’ due to presence of brushes </li></ul></ul><ul><ul><li>Output fed to dc-dc converter </li></ul></ul><ul><li>DC CONVERTER </li></ul><ul><ul><li>It acts voltage regulator of system </li></ul></ul><ul><ul><li>It’s output is a clean dc signal of 170V dc </li></ul></ul><ul><ul><li>Output served to DC AC converter </li></ul></ul>
  • 9. <ul><li>DC AC INVERTER </li></ul><ul><ul><li>It acts frequency regulator of system </li></ul></ul><ul><ul><li>Convert 170V dc 120V ac,60 Hz </li></ul></ul><ul><ul><li>Connected to load </li></ul></ul>
  • 10.  
  • 11. <ul><li>Constant output power for long durations </li></ul><ul><li>High efficiency(>27%) </li></ul><ul><li>Low maintenance </li></ul><ul><li>Can be implemented with any type of heat source </li></ul>
  • 12. <ul><li>Natural vibrations and electromagnetic interference should be below specified levels as given by DOE </li></ul><ul><li>Use of 55 watt electric converter could reduce the amount of Pu-238 fuel </li></ul><ul><li>At output a minimum of 10 W power </li></ul><ul><li>Obtain minimum output efficiency of 25% </li></ul><ul><li>Obtain a 120V (+/-5 %)signal of 60 Hz </li></ul>
  • 13. <ul><li>Need of safe, reliable , long-lived exploration on space bodies such as MARS and in vacuum </li></ul><ul><li>Design of SRG giving output 100-120V of dc electric power </li></ul><ul><li>Some earlier successful launches were- </li></ul><ul><ul><li>GALILIEO SPACECRAFT in orbit about jupiter </li></ul></ul><ul><ul><li>CASSINI SPACECRAFT in saturn’s moon </li></ul></ul><ul><ul><li>NEW HORIZON SPACECRAFT flying by pluto </li></ul></ul>
  • 14.  
  • 15. <ul><li>Extensive efforts are taken to examine the relaibility of SRG </li></ul><ul><li>Traditoinal methods eg. failure mode graphs,criticality analysis of converter etc. </li></ul><ul><li>Generators undergo a series of performance tests like vibration, shock and thermal tests etc. </li></ul>
  • 16. <ul><li>SYSTEM FAILURE CAUSES </li></ul>
  • 17. <ul><li>The Pu-238 fuel is kept in steel containment capsules </li></ul><ul><li>Radioactive wastes dumped underground </li></ul>
  • 18. <ul><li>Can be implemented with any type of heat source </li></ul><ul><li>Can be implemented in remote locations </li></ul><ul><li>RPS missions have changed our understanding of our solar system; to continue this increased understanding requires expanded used of RPS </li></ul>
  • 19. <ul><li>QUERIES????? </li></ul>
  • 20. <ul><li>THANKS </li></ul>

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