Efficient Envelope Designs to Maximize Residential Cooling Energy Savings in Bangkok Neighborhoods

Abstract

Architectural design can significantly improve home energy-efficiency. New energy-saving techniques are regularly proposed; however, integrating all design parameters into the energy simulation specific knowledge and is time-consuming, making it difficult for non-experts in building energy analysis. This present study investigates the impact of envelope designs on household cooling energy consumption in housing complexes located in Bangkok neighborhood areas. The study selects a representative house and identifies a range of envelope designs, including thermal properties of exterior walls and roof, painted color, length of roof eaves, and window-to-wall ratio (WWR). The Latin hypercube method randomly generates two hundred sets of design scenarios based on those design parameters. The eQuest model is used to perform analysis of household cooling energy consumption for four orientations, and the simulation results are validated. The standardized regression coefficient (SRC) is used to determine a strong correlation between design parameters and cooling energy consumption in detached houses. The results reveal that improving a window’s solar heat gain coefficient (SHGC), wall painted color, wall u-value, and length of roof eaves could reduce energy consumption by up to 19.7 percent. The WWR and building orientation were found to have only a small impact on household cooling energy consumption, especially for a square-shaped house. The results provide designers and non-professional a simple design guideline to improve the energy efficiency of their home designs.

CFD Assessment of COVID-19 Infection Risk in Naturally Ventilated Detached Houses

“…We selected a base case from a previous study that surveyed countless detached houses around the Bangkok Metropolitan Area (Inprom & Jareemit, 2021). The representative two-storied house (Figure 1) has dimensions of 9.20 x 8.00 m and consists of three bedrooms and three bathrooms.…”

“…The opening size influences the ventilation rate and therefore represents another significant factor that affects the infection. A sliding window was specified in this study as it is almost the only window type found in typical houses (Inprom & Jareemit, 2021). We selected four window sizes that are most common in typical houses for this study (Table 1).…”

Research on Carbon Reduction of Residential Buildings in Severe Cold Regions Based on Renovation of Envelopes

“…MehdiTavakolan et al [16] used EnergyPlus for dynamic simulation to perform comprehensive simulation analysis of possible scenarios to improve the energy efficiency of the building. Daranee Jareemit [17] used the eQuest model to examine residential cooling energy consumption. Increases in the solar heat gain coefficient of the In 2018, China's building operation carbon emissions totaled around 2.1 billion tons, accounting for almost 20% of the country's total emissions.…”

“…MehdiTavakolan et al [16] used EnergyPlus for dynamic simulation to perform comprehensive simulation analysis of possible scenarios to improve the energy efficiency of the building. Daranee Jareemit [17] used the eQuest model to examine residential cooling energy consumption. Increases in the solar heat gain coefficient of the windows, the U-value of the walls, and the length of the eaves can reduce energy consumption and increase the building's energy efficiency, according to the findings.…”