ict4s - a data analysis approach for diagnosing malfunctioning in domestic space heating
TRANSCRIPT
A Data Analysis Approach for Diagnosing Malfunctioning in Domestic Space Heating
Seyed Amin Tabatabaei
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Where do we use energy?
Smart Thermostat can save energyWhat we need : A model of the house
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1-‐ loss rate, ε:
2-‐ Thermal Capacity, C:
A simple model: degree day: two concepts:
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1-‐ loss rate, ε:
2-‐ Thermal Capacity, C:
A simple model: degree day: two concepts:
1-‐ Cooling down Periods
2-‐ Heating Periods
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εC
= -ΔTin
(Tin −Tout )dt∫
Provided Energy = ε (Tin −Tout )dt∫ + CΔTin
Our Data
Tindoor
ToutdoorGas Usage
1-‐ Cooling down Periods
2-‐ Heating Periods
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Our Data
Provided Energy = ε (Tin −Tout )dt∫ + CΔTin
εC
= -ΔTin
(Tin −Tout )dt∫
Tindoor
ToutdoorGas Usage
1-‐ Cooling down Periods
2-‐ Heating Periods
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Provided Energy = ε (Tin −Tout )dt∫ + CΔTin
Our Data
Tindoor
ToutdoorGas Usage
εC
= -ΔTin
(Tin −Tout )dt∫
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Cool down
Heating
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Temporal Comparison à Diagnosing Malfunctioning:
ORIGINAL
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1st kind of Malfunctioning: Drop in the performance of heating systemOR
IGINAL
εà +33% , Cà+33%
1st M
alfunctio
ning
εà 24% , C à+8%
2ndMalfunctio
ning
εà +6% , Cà -‐7%3r
dMalfunctio
ning
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ORIGINAL
εà +33% , Cà+33%
1st M
alfunctio
ning
εà 24% , C à+8%
2ndMalfunctio
ning
εà +6% , Cà -‐7%3r
dMalfunctio
ning
2nd kind of Malfunctioning: High infiltration by leakage
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ORIGINAL
εà +33% , Cà+33%
1st M
alfunctio
ning
εà 24% , C à+8%
2ndMalfunctio
ning
εà +6% , Cà -‐7%3r
dMalfunctio
ning
3rd kind of Malfunctioning: High Infiltration by leaving windows open
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A Fast Review:Da
taAn
alysis
Compa
rison
Tin
Tout Gas Usage
ε: C:
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A Fast Review:Da
taAn
alysis
Compa
rison
Tin
Tout Gas Usage
ε: C:
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A Fast Review:Da
taAn
alysis
Compa
rison
Tin
Tout Gas Usage
ε: C:
Data
Analysis
Compa
rison
Tin
Tout Gas Usage
ε: C: