Page 50 - JCAU-5-2

Journal of Chinese
Architecture and Urbanism Indoor photothermal environment in Miao dwellings

Figure 12. Indoor light simulation with and without light wells.
Source: Diagram by the authors

the north side of the whole interior is relatively weak and
needs to be improved. The model with additional light wells
was simulated, and the results showed that the indoor light
environment on the side with additional light wells was
significantly improved after the addition of light wells, and Figure 13. Simulated indoor and outdoor temperature results.
the overall illuminance of the room met the illuminance Source: Graph by the authors
standard for indoor reading and writing.

3.3.2. Thermal environment Table 3. The energy consumption before renewal
The simulation experiment was conducted using local Heat balance (kW·h)
meteorological data to analyze and simulate the indoor Energy outputs Total
temperature of the selected sample dwellings throughout Envelope 2368.97
the monitoring period. Figure 13 illustrates the temperature Wall 528.39 (22.3%)
variation curves for both indoor and outdoor spaces. The Ceilings 656.17 (27.69%)
average outdoor temperature was 4.12°C, with a maximum Roofs 647.27 (27.32%)
temperature of 7.4°C and a minimum temperature of Glazing 14.23 (0.6%)
0.07°C. The outdoor temperature exhibited a fluctuation of
7.47°C. In contrast, the average indoor temperature of the External air 522.91 (22%)
sample houses was 8.25℃, with a maximum temperature
of 13.36℃ and a minimum temperature of 9.54℃. The Table 4. The energy consumption after renewal
indoor temperature of the sample dwellings demonstrated
a fluctuation of 3.82℃. Heat balance (kW·h)
Energy outputs Total
The simulation results indicate that the indoor Envelope
temperature distribution exhibits a gradual transition and Wall 232.31 (29.29%) 793.04
experiences less variability than the outdoor temperature,
signifying a certain level of thermal stability within Ceilings 206.72 (26.07%)
the residential houses. These findings suggest that the Roofs 145.81 (18.39%)
selected dwellings possess favorable thermal performance Glazing 6.42 (0.01%)
and provide a relatively stable indoor photothermal External air 201.78(25.44%)
environment.
The heat energy loss of the building envelope was (296.08 kWh), ceiling (449.45 kWh), roof (501.46 kWh),
assessed before and after the renovation, as presented and glass curtain wall (7.81 kWh).
in Table 3. Before the renovation, the total energy
consumption amounted to 2368.97 kWh. After the 4. Discussion
renovation, the total energy consumption was 793.04 kWh The architectural characteristics of traditional dwellings
(Table 4). As a result of the renovation, the heat energy are intricately linked to the specific natural climate and
loss within the interior of the Miao traditional houses in geographic environment of a region. These variances
the Xiangxi area decreased by 1575.93 kWh. Specifically, encompass elements such as temperature and humidity,
reductions in heat energy loss were observed in the wall wind patterns and intensity, latitude and altitude, solar

Volume 5 Issue 2 (2023) 8 https://doi.org/10.36922/jcau.403