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Journal of Chinese
Architecture and Urbanism Green renovation technology for rural buildings

Figure 2. Diagram of the appropriate technology system for green renovation of rural buildings incorporating regional culture. Source: Drawing by the author.

setting of rain gardens and rainwater ponds to supplement, thermal insulation performance of the exterior windows.
and protect groundwater resources. The exterior window shading system can be combined with
the exterior façade regional characteristics transformation
3.3. Exterior envelope performance optimization by adding shading components or internal shading
technology facilities. In the transformation of roof heat insulation
Energy saving and consumption reduction is the key point and waterproofing, it is appropriate to choose appropriate
of suitable green renovation of rural buildings. Through transformation measures according to the original roof
the renovation of exterior walls, exterior windows, roofs, structural form and the actual situation of the protection
and other components of the envelope structure, the layer, waterproof layer, and heat insulation layer to
thermal insulation performance of the exterior envelope improve the heat insulation performance of the roof. The
structure is improved, which can effectively improve application of traditional roof forms or green roofs can be
the indoor thermal environment and reduce energy considered, while practicality should be taken into account
consumption, as shown in Table 1. In the renovation of to facilitate rural life and production.
exterior wall thermal insulation, according to the regional
climatic conditions and the actual situation of the project, 3.4. Indoor environment quality improvement
two methods can be used: Internal insulation of exterior The green suitability transformation for indoor wind
wall and external insulation of exterior wall, and the environment, light environment, and moisture control
materials can be selected from foam glass insulation board, is beneficial to improve the problems of poor indoor
polystyrene insulation board, inorganic insulation mortar, thermal environmental comfort, insufficient light and
and so on, so that the thermal performance of exterior wall poor ventilation, which are common in rural buildings,
can meet the requirements of relevant standards. When the and can improve the quality of indoor environment. In
thermal performance of the original exterior wall meets terms of indoor wind environment improvement, the
the standard, it can be coated with thermal insulation ventilation wisdom of traditional regional architecture
reflective coating to further improve the thermal insulation is combined with modern technology to actively realize
performance. In the heat insulation transformation of natural indoor ventilation. First, optimize the design of
exterior windows, the heat transfer coefficient of exterior building plan, elevation, and section, adopt wind pressure
windows can be reduced and the air tightness increased and thermal pressure ventilation, reasonably design
by replacing insulating glass plastic windows, coated glass elevation openings and indoor ventilation paths, and
windows, double-layer insulating LOW-E glass windows, actively organize ventilation through the hall; second,
and other energy-saving windows that can effectively block increase or widen the internal courtyard to enhance
heat radiation. If the original window frame has good air ventilation; third, penetrate the staircase part in the section
tightness, the original ordinary glass can be replaced with to achieve the effect of “pulling wind”; fourth, consider
coated glass, insulating glass, and so forth, to improve the using mechanical ventilation to assist in improving when

Volume 5 Issue 1 (2023) 4 https://doi.org/10.36922/jcau.404