Page 49 - JCAU-5-2

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

Figure 9. Dwelling materials. Source: Photos by the authors

window-to-floor area ratio in the rooms on both sides
is calculated as 1/18.92, significantly deviating from the
recommended minimum lighting coefficient of 1/7 per
the Building Light Design Standard GB50034-2013 in
China. Conversely, the window-to-floor area ratio in the
hall room is determined to be 1/7.10, which approximates
the recommended minimum value. Given the overall
north-to-south orientation of Zhushan Village, with
doors and windows primarily facing south, the hall Figure 10. Location of light measurement points and corresponding
room benefits from ample direct sunlight during the day, illuminance. Source: Drawing by the authors
resulting in favorable illumination conditions. However,
the side rooms suffer from inadequate lighting due to
their limited window openings and substantial depth.
Through the conducted sampling in three areas, the
measured light intensity levels from outside to inside
were determined as follows: 20,400 lux, 1632 lux, and 476
lux for the hall; 2312 lux, 204 lux, and 136 lux for the fire
pit; and 4080 lux, 272 lux, and 136 lux for the side room
(Figure 10). Thus, the interior light in the sample room is
deemed insufficient.

3.2.2. Temperature
The data provided in Figure 11 presents the findings from
the monitoring of four indoor and outdoor locations within
a representative Miao residential dwelling. Throughout the
monitoring period, the average outdoor temperature was
recorded at 5.56℃, exhibiting a temperature fluctuation
of 11.5℃. Conversely, the average indoor temperature Figure 11. Temperatures of the monitoring points. Source: Graph by the
was measured at 6.32℃, with respective temperature authors
fluctuations of 6.45℃ and 5.5℃ in the hall room, 6.49℃
and 4.1℃ in the fire pit room, and 6.01℃ and 4.0℃ in the 3.3. Simulation results
side room. These observations indicate that during the
winter season, the indoor temperature of traditional Miao 3.3.1. Luminous environment
houses in western Hunan remains marginally higher than Figure 12 shows the indoor light environment before and
the outdoor temperature by <1℃ while demonstrating after the Ecotect simulation of the renovation, and its data
significantly reduced fluctuations compared to the outdoor before the simulation of the renovation is the same as the
temperature. monitoring data. In the simulation diagram, the light on

Volume 5 Issue 2 (2023) 7 https://doi.org/10.36922/jcau.403