We note an upward trend in the ∆T curve(difference between water production temperatures
(ST-2) and water input temperature (ST-1)). The correlation suggests that as the light intensity
increases, ∆T also increases. where:
 The ∆T curve reaches its lowest point at -3.7 °C under a 30% light intensity, indicating a
negative value. This is due to the cooling effect due to the low temperature of the
environment on the performance of the thermosiphon.
 Conversely, the peak value of 10.6 °C occurs at a light intensity of 90%, signifying a
thermal flow from the hot zone to the cold zone. This observation aligns with the expected
and stable performance of the thermosiphon.