This document discusses solar energy technology and solar thermal collectors. It explains the key principles of heat transfer through radiation, conduction and convection. It then describes different types of solar thermal collectors, including flat plate collectors, evacuated tube collectors, and concentrating collectors. These collectors absorb solar radiation and transfer the heat to fluids like water, glycol or oil for uses such as heating pools, buildings or generating power. The document provides details on characteristics of different collector materials and coatings to optimize absorption and transfer of solar energy.

1. TeknologiSel Surya SatwikoSidopekso Sesion #01-02 JurusanFisika FakultasMatematikadanIlmuPengetahuanAlam

2. Solar Energy © 2010 Universitas Negeri Jakarta | www.unj.ac.id | 2 06/01/2011

4. Conduction

5. ConvectionOr, as I like to say; Heat in/Heat out 06/01/2011 3 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

7. Don’t allow sunlight out (emittance)

8. Absorb the sunlight (absorptance)

9. Transfer the sunlight energy to a fluid running through the collector (conductance and convection)

10. Lose as little heat as possible (convection)06/01/2011 4 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

11. Solar Ovens 5 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

12. 6 Solar Pool Heating Collectors 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

13. 7 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

14. Solar Hot Water and Heating 8 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

15. 9 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

16. Flat Plate Collectors 10 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

17. Evacuated Tube Collectors 11 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

18. Evacuated Tube Collectors ViessmanVitosol 300, Cut-awayView 12 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

19. High Temperature (Concentrating Systems), Industrial Power Generation, Hot Water, Process Heat, System Owned By Solucar. 13 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

20. 14 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

21. Schott Solar Power Plant 15 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

22. Solucar Parabolic Trough Concentrating Collector The physical characteristics of the concentrator modules are: Overall Module Size 7 ft. 6 in. x 20 ft.(2.3m x 6.1 m) Concentrator Weight 178 lb ( 81 kg) Concentrator Rim Angle72° Materials of Construction: Aluminum Reflective SurfaceOptions: Aluminum acrylic Enhanced polished aluminumLightweight, low maintenance concentratorReceiver The receiver specifications are: Absorber Tube Outside Diameter 2.0 inch (5.08 cm) Absorber Material SteelSelective Surface Blackened nickel Absorptance 0.96 - 0.98 Emittance (80°C) 0.15 - 0.25 Absorber Envelope Material Borosilicate glass Envelope Anti-Reflective Coating Sol gel Transmittance 0.95 - 0.965 Maximum Operating Temperature 550°F (288°C) 16 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

25. The National Solar Radiation Database gives us TMY (typical meteorological year) radiation data for cities across the US

26. A computer simulation (TRNSYS) uses that data to give us the amount of radiation on a tilted surface.

27. Denver, 45 degree, 20.89 MJ/m2 day, which is Mega Joules (106) per square meter for a day (1839 BTU/ft2 day)

28. SRCC (Solar Rating and Certification Center)

29. Joule is the SI standard unit of energy (equivalent to a BTU)

30. A Watt is Power in the SI units system.

31. Also know as a Joule/Sec (BTU/hr)18 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

33. Water, Propylene Glycol, Oil, Air

34. High Temperature (Concentrating Systems), Industrial Power Generation

35. Medium Temperature (Evacuated Tubes)

36. Residential and Commercial

37. Low Temperature (Flat plates)

38. Unglazed (Pool Panels)19 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |

39. 20

40. 06/01/2011 © 2010 Universitas Negeri Jakarta | www.unj.ac.id | 21 TerimaKasih