Page 119 - JCAU-6-3

Journal of Chinese
Architecture and Urbanism Sustainability of courtyard building

Table 4. Heating and cooling loads of the flag stall courtyard
building in Chongreng historical town. Source: Table by
Chuan He

Zone/Floor Identifier Space cooling Space heating
load (W) load (W)
Internal loads by zone L001_P01 3,923 3,622
L001_P02 1,749 1,745
L001_P03 1,728 1,729
L001_P04 1,119 1,039
L001_P05 2,909 2,637
L002_P01 3,472 1,521
L002_P02 3,450 1,515
L002_P03 1,321 1,212
L002_P04 0 0
Figure 9. Wood-carved external shading of windows. Source: Photo by
Chuan He L002_P05 241 247
L002_P06 3,239 1,449
L002_P07 3,451 1,958
L002_P08 1,330 1,236
L002_P09 1,427 639
L002_P10 3,421 1,947
L002_P11 3,238 1,449
L002_P12 252 247
L002_P13 0 0
L002_P14 1,428 1,212
Internal loads by floor Level 1 11,427 10,771
Level 2 26,269 14,633

two stars (Green Star Council Australia, n.d.). The building
must have at least a 10% lower energy consumption than
Figure 10. Sunshine analysis using autodesk revit. Source: Drawing by the Reference project, described below. This requires
Chuan He developing two building energy models. One is based on
the client’s wish list for the insulation, glazing, and building
heating load is 25,404 W. Total energy consumption is services. The other, the Reference project, is similar to the
41,499 kWh/year (Figure 11). The main heat and cooling NCC Reference building for JV3 modeling but includes
losses occur through walls, roofs, and glazing (Figure 12). some changes required by the GBCA Calculation Guide.
Most of the energy is consumed for heating and lighting The total energy consumption of the reference model is
in winter (Figure 13), and the annual energy consumption 66,700 kWh/year, while the energy consumption of the
cost is $4,103 (Figure 14). Heating in winter accounts for actual model is 41,500 kWh/year (Figure 15). This means
42% of total energy consumption, mainly due to the lack that the actual energy consumption is 37.7% less than that
of thermal insulation in the building and the excessive of the reference model, qualifying the building to earn two
height of the first floor because of the pitched roof. As stars.
noted above, 18% of interior spaces are underlit, requiring
14,100 kWh/year for supplementation, which accounts for 5.4. Transport
34% of the total energy consumption. The building uses stone and wood as the main materials.
Green Star system also has evaluation criteria for The acquisition location of the stone can be determined
energy. For the energy performance model, compared according to information from the local government
with the reference model, a reduction of 20% in electricity website. The stone materials for the historical buildings in
demand can earn one star, and a reduction of 30% can earn Chongren town were sourced from a quarry 5 miles north

Volume 6 Issue 3 (2024) 11 https://doi.org/10.36922/jcau.3187