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Fault Detection and Diagnostics for Rooftop Air Conditioners

Fault Detection and Diagnostics for Rooftop Air Conditioners

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6<br />

T evap<br />

T cond<br />

5<br />

T hg<br />

T sc<br />

T sh<br />

4<br />

dT ca<br />

dT ea<br />

RMS error (F)<br />

3<br />

2<br />

1<br />

0<br />

1 2 3 4 5 6<br />

Training data set NO.<br />

Figure 5.2 RMS error with different training data set<br />

Training data set<br />

number<br />

Table 5.1 Data organization <strong>for</strong> adaptive modeling<br />

Driving conditions range<br />

T ra (F) T ai (F) T wb (F)<br />

1 73-77.5 70-85 58-62.5 16<br />

2 73-79 70-90 58-64 35<br />

3 71.5-79 65-90 56.5-64 48<br />

4 71.5-80.5 65-95 56.5-65.5 67<br />

5 70-80.5 60-95 55-65.5 96<br />

6 70-82 60-100 55-67 135<br />

Training data<br />

amount<br />

57

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