Table 2

Optimum monthly collector tilt angles for enhanced thermal energy gain.

Month Φopt Thermal gain (Qc)
Jan 50 3.23
Feb 40 2.97
Mar 25 3.58
Apr 10 3.59
May 0 4.11
Jun 0 3.93
Jul 0 3.57
Aug 5 3.87
Sep 20 3.81
Oct 35 3.86
Nov 50 3.72
Dec 50 3.18
Average 23.75 3.62

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