Judicious method of integrating phase change materials into a building envelope under Saharan climate

Maamar Hamdani*, Sidi Mohammed El Amine Bekkouche, Saleh Al-Saadi, Mohamed Kamal Cherier, Rachid Djeffal, Mohamed Zaiani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Phase change materials (PCMs) have been extensively used for thermal storage systems in buildings. To enhance the building's thermal and energy performance, PCMs can be embedded into envelope systems to reduce the cooling and heating demand. A PCM's melting temperature close to the thermal comfort range (20°C-26°C) can potentially be an attractive solution. In this work, the thermal and energy performance of a building in Saharan climate, specifically Ghardaïa in Algeria, was modeled using the TRNSYS-18 simulation package. A newly developed module (Type-285) was compiled for this version to evaluate different PCMs integration approaches in building envelope. Integration techniques have been evaluated based on three performance indicators, namely, monthly and annual energy savings, mean air temperature, and the daily average temperature fluctuation. When considering the conventional PCMs integration within the building envelope, a reduction of 36.4% in annual energy consumption was achieved. The study indicated that when PCMs are carefully integrated based on orientations and seasons, a reduction of 50.71% in annual energy consumption is possible, an additional 14.34% to the conventional PCMs integration. In addition, PCMs provided an enhanced thermal performance and a significant reduction in indoor temperatures that ranged between 2.36°C to 4°C. The study proposes an improved PCMs integration approach which can be possibly implemented if movable PCMs panels are used instead of the conventional static PCMs panels.

Original languageEnglish
Pages (from-to)18048-18065
Number of pages18
JournalInternational Journal of Energy Research
Issue number12
Publication statusPublished - Oct 10 2021


  • TRNSYS-18
  • air temperature
  • energy savings
  • heating and cooling energy needs
  • melting PCM temperature
  • phase change materials

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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