Evaluation of Basement's Thermal Performance Against Thermal Comfort Model at Hot-Arid Climates, Case Study, Egypt

Daisuke Sumiyoshi (1), Heba Hassan Kamel (2)
(1) Associate Professor, Sustainable Building Energy SystemKyushu University - Department of Architecture and Urban Design Faculty of Human-Environment Studies, Japan, Japan,
(2) Assistant Teacher, Faculty of industrial Education, Beni-Sueif University, Egypt, Egypt


Reaching thermal comfort levels in hot-arid climates is becoming more difficult nowadays without the use of high energy consuming mechanical systems. Therefore, the need to use effective passive energy design techniques such as earth-sheltered buildings is becoming greater.
This paper combines researches that uses monitoring and simulations in order to evaluate basements’ thermal performance that reached thermal comfort levels without active air-conditioning systems, despite the harsh climate conditions. The case study was conducted in Al-Minya city, Egypt, which is known for its high diurnal range. The study calibrated a non-conditioned basement simulation model versus the monitored data to simulate its thermal performance. The greatest challenge was to calculate the ground temperature. To do this successfully, we used an iterative approach between packages of the basement preprocessor and Energy Plus / Design Builder until reaching a convergence.
The iterative method results showed significant agreement between the measured and modeled data; with a correlation of 98 percent and errors with mean bias error and normalized root mean square error of -1.0 and 7.6 percent; respectively. On the other hand, the Energy Plus method, integrating the Xing approach, showed significantly divergent results between the simulated models versus the measured data. The calibrated model analysis evaluation, using the Fanger’s thermal comfort model, showed satisfactory results within the thermal comfort sensation range.
The research results significance indicates that the precise customized detailed iterative method is essential to create the needed inputs which subsequently lead to near-to-actual outputs compared with other ground-contact simulation methods. In fact, the precise customized detailed iterative method approach may be used as a benchmark for simulators for easy and precise ground temperatures’ calculations and earth-sheltered buildings’ simulations.

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Daisuke Sumiyoshi
Heba Hassan Kamel
[email protected] (Primary Contact)
Author Biography

Heba Hassan Kamel, Assistant Teacher, Faculty of industrial Education, Beni-Sueif University, Egypt

Heba Hassan got her MSc. degree from Minia University, Egypt on the sustainable architecture.

She had earned a master scholarship from Minia University as a researcher and teaching assistant at the faculty of engineering.

She has 13 years of sustainable architecture teaching experience at Beni Suef University, as well.

Heba had got a scholarship as a visiting researcher from Japan Society for the Promotion of Science (JSPS), RONPAKU to pursue advanced studies for seeking a PhD. degree from Kyushu University, Japan.

She is interested in the passive design building techniques, mainly Earth-sheltered buildings research.

She had participated in different international conferences at Shanghai-China, Nagoya-Japan and Cairo-Egypt. As well as publishing at Sustainable Cities and Society journal by Elsevier. 

Sumiyoshi, D., & Kamel, H. H. (2017). Evaluation of Basement’s Thermal Performance Against Thermal Comfort Model at Hot-Arid Climates, Case Study, Egypt. Environmental Science & Sustainable Development, 2(1), 24–38. https://doi.org/10.21625/essd.v2i1.26

Article Details

Received 2016-11-02
Accepted 2017-06-29
Published 2017-07-01