Quantitative analysis and enhancement on passive survivability of vernacular houses in the hot and humid region of China

Zou, Yukai; Guo, Jialiang; Xia, Dawei; Lou, Siwei; Huang, Yu; Yang, Xiaolin; Zhong, Zhengnan

doi:10.1016/j.jobe.2023.106431

Cited by 5 publications

(3 citation statements)

References 68 publications

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“…Al-Yasiri et al [49] found that using PCM to improve building thermal performance in hot climates results in a higher operating temperature in PCM rooms than in non-PCM rooms due to the PCM absorbing heat during the day and releasing heat uncontrollably to the indoor environment in the evening. Zou et al [50] effectively improved indoor thermal comfort by improving the passive survivability of four indigenous buildings in humid and hot areas under future climate scenarios.…”

Section: Literature Reviewmentioning

confidence: 99%

Building Thermal and Energy Performance of Subtropical Terraced Houses under Future Climate Uncertainty

et al. 2023

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Due to global temperature increases, terraced house (TH) residents face a threat to their health due to poor indoor thermal environments. As buildings are constructed by low-income residents without professional guidance, this study aims to investigate the indoor thermal comfort and energy resilience of THs under the future climate and determine the optimal passive design strategies for construction and retrofitting. By exploring the effects of building envelope structures, adjusting the window-to-wall ratio (WWR) and designing shading devices, EnergyPlus version 22.0 was used to optimize the thermal environment and cooling load of THs throughout their life cycle under future climate uncertainties. Unimproved THs will experience overheating for nearly 90% of the hours in a year and the cooling load will exceed 60,000 kWh by 2100 under the Representative Concentration Pathways (RCP) 8.5 scenario. In contrast, optimization and improvements resulted in a 17.3% reduction in indoor cooling load by increasing shading devices and the WWR, and using building envelope structures with moderate thermal insulation. This study can guide TH design and renovation, significantly reducing indoor cooling load and enabling residents to better use active cooling to combat future overheating environments.

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Section: Literature Reviewmentioning

confidence: 99%

Building Thermal and Energy Performance of Subtropical Terraced Houses under Future Climate Uncertainty

et al. 2023

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“…However, TMY ignores the uncertainties of climate and filters out extreme conditions. Thus, using TMY alone is insufficient for making representative building performance predictions [46,47]. Moreover, there is no evidence to suggest that the building operating cost calculated based on TMY is sufficiently accurate, given the complexity of energy bill calculations.…”

Section: Introductionmentioning

confidence: 99%

Improving the Energy Performance and Economic Benefits of Aged Residential Buildings by Retrofitting in Hot–Humid Regions of China

Yang

Zou

et al. 2023

Energies

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The existing building stock faces the challenge of low energy efficiency and requires renovation and upgrading to meet society′s goals of carbon reduction and sustainable development. This study presents an optimization framework utilizing genetic algorithms to develop robust retrofit plans that balance the need for improved energy efficiency, cost-effectiveness considerations for householders, and uncertainties regarding climate conditions. A case study of an aged residential building in a hot and humid region of China is used to demonstrate the proposed method. The optimization results show a potential energy demand reduction of 81.5%. However, due to the relatively long time required to realize economic benefits from high investments, short-term optimization tends to favor solutions with high energy demand and low primary costs. To effectively reduce carbon emissions, it is recommended to consider the long-term economic benefits of retrofits and prioritize solutions with high energy efficiency. However, it is important to acknowledge that the expensive nature of retrofit investments may pose barriers to residents. Society should provide adequate support and guidance to facilitate residential renovation efforts.

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“…Vernacular buildings are constructed using local materials and designed with passive strategies, allowing them to adapt to the local climate. Due to the economic limitations of their owners and the thermal adaptability of their spaces, residents rely on the building's passive capacity for thermal comfort [7]. There are various typologies of vernacular buildings according to the climate and region of implementation, which serve as useful examples for the achievement of sustainability through architectural design and reducing the reliance on artificial climate control and its subsequent energy [5,[8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Passive Strategies in Traditional Vernacular Architecture

Moscoso-García,

Cárdenas-Sánchez,

Quesada-Molina

2023

Preprint

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Vernacular architecture constitutes a rich source of information and ancestral knowledge that can become a key resource for sustainable development through its passive design strategies, which effectively respond to local climatic and weather conditions using locally sourced materials for the construction of its supporting structure and enveloping elements, as well as spatial organization and the incorporation of a buffer area (patio) that optimize the use of renewable resources. This qualitative study analyzes a traditional housing typology with a central patio located in the Historic Center of Azogues city, Ecuador, to evaluate its interior thermal comfort through in-situ monitoring in the different building spaces. Using the open-source software Open Studio and EnergyPlus, a simulation model was built to assess the annual thermal performance of the house. Field records were used to verify the effectiveness of the strategies that respond to the climatic conditions of the area. The analysis carried out on the passive strategies used in the selected house with regard to natural ventilation, solar protection, and thermal insulation, which depend on various aspects of the building, such as its location, internal space arrangement, design of openings (doors and windows), among others. The thermal simulations reveal that the traditional house located in the Historic Center of Azogues city is well adapted to the local climate, although interior thermal comfort is not entirely satisfactory.

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Quantitative analysis and enhancement on passive survivability of vernacular houses in the hot and humid region of China

Cited by 5 publications

References 68 publications

Building Thermal and Energy Performance of Subtropical Terraced Houses under Future Climate Uncertainty

Building Thermal and Energy Performance of Subtropical Terraced Houses under Future Climate Uncertainty

Improving the Energy Performance and Economic Benefits of Aged Residential Buildings by Retrofitting in Hot–Humid Regions of China

Analysis of Passive Strategies in Traditional Vernacular Architecture

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