Evercool PCAC - Results
(Page 6 of 9 )
The chart below shows readings at each plateau for each configuration. Total reading were taken in ten minute intervals and reached plateau by the fourth reading in each case.
| Sensor Readings @ Plateau |
|---|
Interval | Test | PCAC Spd | S1 | S2 | S3 | SA |
4 | Idle | Off | 33.1 | 31.0 | 27.2 | 24.4 |
8 | Idle | Low | 33.2 | 30.4 | 27.0 | 24.6 |
12 | Idle | Med | 32.7 | 30.3 | 26.3 | 24.4 |
16 | Idle | High | 32.0 | 33.8 | 25.7 | 24.2 |
32 | Load | Off | 31.3 | 29.1 | 25.0 | 21.9 |
28 | Load | Low | 33.1 | 35.0 | 25.3 | 22.9 |
24 | Load | Med | 33.4 | 35.5 | 25.4 | 23.3 |
20 | Load | High | 33.8 | 36.4 | 25.8 | 23.8 |
S1:Rear middle| S2:Upper middle | S3: Bottom | SA: Ambient |
At a glance we can see that temperatures did not fluctuate heavily. This isn't necessarily a bad thing, but we can guess that we cannot expect huge results from the PCAC before we even break this data down. I don't want to get ahead of myself here, though; have a look at the chart shortly to see idle and load performance at four different speed settings (off, low, medium, and high).
For our final comparisons we are focusing on the difference in temperature from ambient readings (Delta T). Delta T signifies the difference in temperature from ambient (the outside room temperature) to the reading we get from the thermistors. Delta T is derived from the following basic equation:
Delta T = S - SA
Where S is a reading from a thermistor inside the case, and SA is the ambient temperature reading taken at the same time. The temperature in this room fluctuates between 3-5 degrees as the heating system tries to stabilize room temperatures. It's around -7 degrees Celsius right now outside, so even the smallest draft can make a difference. Looking at temperatures relative to ambient will provide a much more realistic view of performance. Just looking at the fluctuations makes you realize how easily the other readings can be invalidated without a reference such as this.
| Delta T @ Idle |
|---|
PCAC Spd | S1 | S2 | S3 |
Off | 8.7 | 6.6 | 2.8 |
Low | 8.6 | 5.8 | 2.4 |
Med | 8.3 | 5.9 | 1.9 |
High | 7.8 | 9.6 | 1.5 |
S1: Rear middle | S2: Upper middle | S3: Bottom |
Next: Graphing the Delta Changes >>
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