2.1.2 Solar Heat Gains

Table 6 Internal heat gains

2.1.2 Solar Heat Gains

The building has only two facades on the east and west sides, thus there are no direct

solar gains considered for north and south walls. Moreover, it has been found from

Ecotect that the east façade is fully shaded while the west is not. Therefore, the manual

calculations have been carried out appropriately and most of work has been done for the

east side of building.

The Table 7 shows the dimension of the windows. The L (length) is the total length of the

windows on either building floor.

West side East side

H (m) L (m) A ( ) H (m) L (m) A ( )

Exhibition centre 2.1 35.5 72.9 2.23 19.3 43.7

Library 2.1 35.5 72.9 2.3 22.3 50.5

Office 2.1 35.5 72.9 2.3 9.0 20.4

Total area, m 2 218.7 114.7

Table 7 Window dimensions

H – height of the window(s), m; A – are of the window(s), m2

Ecotect has shown that the peak heat gains for base case scenario happens on April 22nd

at 15:00, thus, at first, the solar heat gains were investigated manually at this time. The altitude is . Initial shading device has the length of 1m for library and office floors. The Figure 15 shows that when the altitude is , only the second floor glazing is fully

shaded. The small upper part of the window at the second floor is not shaded and permits

some of the direct sunlight. The first floor is not shaded at all.