Environmental Engineering Reference
In-Depth Information
The measurement sensors are shown in Figure 9:
•
T: temperature measuring sensor. (Accuracy: 0.1 C)
•
HR: relative humidity measuring sensor. (Accuracy: ±2 % RH (0-100% RH))
Figure 9. Measurement Sensors.
E
XPERIMENTAL
M
EASUREMENTS
The characterization of the recovery system was carried out following the experimental
design method. A complete factorial design was developed, to analyse the total heat
recovered by the system in heating mode and in cooling mode. (See Figure 10)
There were two factors analyzed:
•
Air Flow
The airflow levels correspond to three levels: 300m3/h, 400m3/h and 500m3/h.
•
Temperature
The temperature levels correspond to summer and winter conditions in Valladolid (Spain)
in order to analyze the behaviour of the device in both working modes. The summers levels
are: 45ºC (T9), 40ºC (T8), 35ºC (T7), 30ºC (T6) and 25ºC (T5) and the winter levels are:
20ºC (T4), 15ºC (T3), 10ºC (T2) and 5ºC (T1).
From the experimental results, the following characteristics: sensible heat, latent heat and
total heat are evaluated separately to better explain the combined system behaviour.
