An Overview of One-Sun Solar Thermal Technology

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Variations with Evacuated Tubes • Passive thermosiphon • Tubes directly enter storage tank, thermosiphon loop each tube • Active system • Fin-tube heat pipe transfers heat to condensor in manifold SEET Solar Thermal Seminar 7/26/07
Performance Basics • System efficiency ≡ η sys = Q sav /Q inc • Q inc ~ 3-6 kWh/m 2 /day, 100-200 kWh/ft 2 /year • Solar Fraction ≡ f sol = Q sav /Q fuel,no-solar • η sys ≈ constant ≈ 0.4 for active system 1.00 0.80 0.60 Active Solar Water Heating (216 locations in the continental U.S.) Solar Fraction Efficiency 1.00 0.80 0.60 0.40 0.40 0.20 0.20 0.00 0.00 0.0 5.0 10.0 15.0 20.0 25.0 30.0 Annual-Average Ambient Temperature ( o C) SEET Solar Thermal Seminar 7/26/07
Page 1 and 2:
An Overview of One-Sun Solar Therma
Page 3 and 4: The Sun = Radiant Energy Energy in
Page 5 and 6: Sunlight: Waves or Photons? • As
Page 7 and 8: The Solar Spectrum UV Visible Near
Page 9 and 10: Uses of Solar: Photovoltaics PV Cel
Page 11 and 12: Uses of Solar: Heat production Abso
Page 13 and 14: SWH Technology Collectors Many type
Page 15 and 16: Photovoltaics as Unglazed Collector
Page 17 and 18: Flat Plate Collector Types Fin-tube
Page 19 and 20: Evacuated Tube Collector Fin-tube a
Page 21 and 22: Collector Performance Efficiency (
Page 23 and 24: Collector Efficiency Equation Effic
Page 25 and 26: Solar Water Heater Certification So
Page 27 and 28: SWH Technology Systems Many types F
Page 29 and 30: Solar Pool Collectors/System Inexpe
Page 31 and 32: Solar Water Heaters (SWH) • Succe
Page 33 and 34: SWH Classification: Active Active *
Page 35 and 36: Further Classification Dimensions
Page 37 and 38: Further Classification Dimensions
Page 39 and 40: Active System- Indirect Glycol in t
Page 41 and 42: Another Drainback Design Solar Sens
Page 43 and 44: Thermosiphon vs. Active Thermosipho
Page 45 and 46: Solco/Australian TSiphon 2/3 cost r
Page 47 and 48: ICS Systems SEET Solar Thermal Semi
Page 49 and 50: Unpressurized ICS: DEG/SE Thermofor
Page 51 and 52: Field Installations Migrant housing
Page 53: Evacuated Tube Collector Fin-tube a
Page 57 and 58: SDHW: Flush-mount Neat!! SEET Solar
Page 59 and 60: U.S. Sales by Year $1 billion/yr @
Page 61 and 62: Market Penetration Maximum Market P
Page 63 and 64: SWH and Cost • Present systems: -
Page 65 and 66: Key Reliability Issues • Installa
Page 67 and 68: Installation problems SEET Solar Th
Page 69 and 70: Installation Training North America
Page 71 and 72: Future Solar Thermal • Cold-clima
Page 73 and 74: Pipe Freeze Probability Probability
Page 75 and 76: Freeze Protection System Two Levels
Page 77 and 78: Freeze-thaw Test Freezer PEX Result
Page 79 and 80: FPV Protecting Piping Collector Sto
Page 81 and 82: Passive Systems Market Extension? S
Page 83 and 84: 100% Solar HVAC Another natural pro
Page 85 and 86: Solar Combi System Schematic Compar
Page 87 and 88: Architectural/aesthetic issues Low
Page 89 and 90: Combi-System: High Solar Fraction N
Page 91 and 92: Annual Storage 1500 Solar Fraction
Page 93 and 94: Adsorption/Desorption Desiccant Sto
Page 95: Thank you for your Attention • Ju
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An Overview of One-Sun Solar Thermal Technology

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