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ICT4S - A data analysis approach for diagnosing malfunctioning in domestic space heating

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Seyed Amin Tabatabaei

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ICT4S - A data analysis approach for diagnosing malfunctioning in domestic space heating

  1. 1. A  Data  Analysis  Approach  for   Diagnosing  Malfunctioning  in  Domestic  Space  Heating Seyed  Amin  Tabatabaei 1
  2. 2. 2 Where  do  we  use  energy? Smart  Thermostat  can  save  energy What  we  need  :     A  model  of  the  house
  3. 3. 3 1-­‐ loss  rate,  ε: 2-­‐ Thermal  Capacity,  C: A  simple  model:  degree  day:  two  concepts:
  4. 4. 4 1-­‐ loss  rate,  ε: 2-­‐ Thermal  Capacity,  C: A  simple  model:  degree  day:  two  concepts:
  5. 5. 1-­‐ Cooling  down  Periods 2-­‐ Heating  Periods 5 ε C = -ΔTin (Tin − Tout )dt∫ Pr ovided Energy = ε (Tin − Tout )dt∫ + CΔTin Our  Data Tindoor Toutdoor Gas  Usage
  6. 6. 1-­‐ Cooling  down  Periods 2-­‐ Heating  Periods 6 Our  Data Pr ovided Energy = ε (Tin − Tout )dt∫ + CΔTin ε C = -ΔTin (Tin − Tout )dt∫ Tindoor Toutdoor Gas  Usage
  7. 7. 1-­‐ Cooling  down  Periods 2-­‐ Heating  Periods 7 Pr ovided Energy = ε (Tin − Tout )dt∫ + CΔTin Our  Data Tindoor Toutdoor Gas  Usage ε C = -ΔTin (Tin − Tout )dt∫
  8. 8. 8 Cool  down Heating
  9. 9. 9 Temporal  Comparison    à Diagnosing   Malfunctioning: ORIGINAL
  10. 10. 10 1st kind  of  Malfunctioning:        Drop  in  the  performance  of  heating  system ORIGINAL εà +33%  ,  Cà+33% 1stMalfunctioningεà 24%  ,  C  à+8% 2ndMalfunctioning ε à +6%  ,  Cà -­‐7% 3rdMalfunctioning
  11. 11. 11 ORIGINAL εà +33%  ,  Cà+33% 1stMalfunctioningεà 24%  ,  C  à+8% 2ndMalfunctioning ε à +6%  ,  Cà -­‐7% 3rdMalfunctioning 2nd kind  of  Malfunctioning:   High  infiltration  by  leakage
  12. 12. 12 ORIGINAL εà +33%  ,  Cà+33% 1stMalfunctioningεà 24%  ,  C  à+8% 2ndMalfunctioning ε à +6%  ,  Cà -­‐7% 3rdMalfunctioning 3rd kind  of  Malfunctioning:      High  Infiltration  by  leaving  windows  open
  13. 13. 13 A  Fast  Review: DataAnalysisComparison Tin Tout Gas Usage ε: C:
  14. 14. 14 A  Fast  Review: DataAnalysisComparison Tin Tout Gas Usage ε: C:
  15. 15. 15 A  Fast  Review: DataAnalysisComparison Tin Tout Gas Usage ε: C:
  16. 16. DataAnalysisComparison Tin Tout Gas Usage ε: C:

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