°C
MONTHLY DIURNAL AVERAGES - SINGAPORE, SGP
W/ m²
40
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However, it has been found that the results for the peak solar heat gains were 30
0.8k
been suggested the weather change during that day which could cause a cloud
20
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cover blocking of some of the solar energy. It could be seen in the Figure 16
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two dips are visible at around 11:00 and 14:00 o clock obtained from the
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different from those got after Ecotect simulations. The reason for that has
10
0
Ecotect weather tool. At those times the clouding has increased substantially. -10
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Apr
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°C
LEGEND Comfort: Thermal Neutrality Temperature Rel.Humidity Wind Speed
Direct Solar Diffuse Solar Cloud Cover
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Nov
Dec
DAILY CONDITIONS - 22nd April (112)
W/ m²
40
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30
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20
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10
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0
0.2k
-10
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Figure 16 Solar irradiation on April 22nd
Thus, in order to check that Ecotect is reliable and if the assumptions are wrong in calculating solar heat gains, an additional calculation was performed manually, but for other date. The further calculations for solar gains at 13:00 on December 31st were chosen for comparison where there no great variations of the solar irradiance. Solar heat gains (2) At December 31st 13:00, the upper window part of a west sided second floor is partly shaded as shown in Figure 17 West side shading of the building on December 31st 1pm . Moreover, the east façade of the building is also fully shaded. Calculations:
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22
24
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