jismart2023025: Improvement of Indoor DayLight Environment of Rammed-earth Dwellings in Buwa Village of China

Abstract

Due to the poor indoor physical environment, the traditional rammed-earth dwellings of the Qiang people in China had not be cherished by the local villagers, and thus had been gradually abandoned. In order to help the conservation and inheritance of those precious dwellings, the indoor daylight environment of the well-preserved Yan’s House in Buwa village had been selected as an example to study. Through field measurement and investigation on the daylight environment of the house’s main functional rooms, it had been found that the indoor daylight environment was far below the national daylight standard of China, and meanwhile uncomfort indoor daylight environment was the most serious problem reflected by the Qiang people. Therefore, in order to improve the livability of the dwellings so as to achieve the purpose of living heritage, two measures have been proposed: one was to add light-colored wood panels on the indoor walls to increase the internal reflectivity; the other was to install light pipes to bring natural light into the rooms. Simulation results indicated the measures could make use of natural light to significantly promote the indoor daylight environment and thus reduce artificial illumination, with little impact on the dwellings’ exterior characteristics.