Determination of Optimum Insulation Thickness on Different Wall Orientations in a Hot Climate

Arslan, Erhan; Karagöz, İrfan

doi:10.1007/978-3-319-64349-6_12

Cited by 1 publication

(2 citation statements)

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“…In this study, the effect of the outdoor design conditions, required for the thermal load estimation of the prototype building, on the optimum insulation thickness is also considered. Figure 3 displays five different climate zones of Iran including Hot-Dry, Hot-Humid, Hot-semi Humid, Cold-Dry, and Moderate-Humid which were classified based on the outdoor design conditions [28]. In this study, one city of each climate zone is selected: Isfahan from Hot-Dry zone, which is the largest climatic zone of Iran, Abadan from Hot-Semi Humid zone, Bandar Abbas from Hot-Humid zone, Tabriz from Cold-Dry zone and Rasht from Moderate & Humid zone.…”

Section: Climate Zonesmentioning

confidence: 99%

“…Results show that the highest and lowest optimum insulation thickness belongs to the horizontal and south-facing walls, respectively. The results of the study done by Arsalan and Karagoz [28] indicated that the optimum thickness of XPS insulation is 0.052 m, 0.045 m, 0.061 m and 0.054 m for wall orientation of south, north, east and west, respectively. In the interesting work, Rosti et al [29] claimed that the lowest or highest value of optimum thickness depends on the specific orientation for each climate zone.…”

Section: Introductionmentioning

confidence: 97%

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Effect of HVAC system size on the optimum insulation thickness of the buildings in different climate zones

KARAMI

ANBARZADEH

DELFANI

2022

Journal of Thermal Engineering

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Thermal insulation is one of the most effective methods of reducing energy consumption in buildings. Therefore, the parameters influencing the optimum insulation thickness are widely investigated. In this study, the optimum insulation thickness is obtained using the life cycle analysis method and the genetic algorithm by considering the size of the heating and cooling systems as an optimization variable, which has not been addressed in the earlier researches. Furthermore, the effect of the climate conditions on the optimum insulation thickness is comprehensively studied using five different cl imate zones, including H o t-Dry, Co ld-Dry, Moderate-Humid, Hot-semi Humid, and Hot-Humid. It is found that the optimum thickness of expanded polystyrene insulation increases between 5%-19% considering the size variation of the heating systems including the central heating system and wall-hung gas boilers. By size variation of the cooling systems including the evaporative cooler and split air conditioner, this increase is between 8-19%. This is because the cost reduction due to the reduction of the required size of the heating and cooling systems can be expended for insulating the building with larger thickness which results in lower energy consumption. Based on the obtained results, the energy cost saving increases between 3.5%-14.5% and also, the payback period decreases about 1 to 3 months, depending on the considered heating and cooling systems and climate zone. The results confirm that the optimum insulation thickness can be determined with significant inaccuracy, ignoring the size variation of the heating and cooling systems as a result of thermal insulation.

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Section: Climate Zonesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%