Simulation-based analysis of the use of PCM-wallboards to reduce cooling energy demand and peak-loads in low-rise residential heavyweight buildings in Kuwait
Between 2000 and 2015, annual electric peak demand in Kuwait has doubled to 15000 MW and the Ministry of Energy and Water expects this number to double once more by 2030 attributing 70% of this growth to new housing projects. Within this context, this manuscript evaluates the effect of incorporating PCM-wallboards in low-rise air-conditioned residential heavyweight buildings in Kuwait. Using an EnergyPlus single-zone model, a parametric study is performed considering several window-to-wall ratios (WWRs), different solar orientations and some PCM-wallboards configurations. The main study goals are to: (i) explore the validity of a single PCM-wallboard solution that can be universally applied throughout residential buildings in Kuwait; (ii) evaluate the impact of PCMwallboard on the reduction of both cooling demand and peak-loads; (iii) provide some guidelines for incorporating PCM-wallboards in Kuwait. Following an extensive parametric study, a 4 cm thick PCM-wallboard with a melting-peak temperature of 24 °C yielded the lowest annual cooling demand across a variety of room orientations and WWRs assuming cooling setpoint of 24 °C. Its implementation led to annual cooling energy savings of 4%–5% across all the case-studies. Regarding the impact throughout the year, cooling demand and peak-loads can be reduced by 5%–7% during summer months. The average daily cooling loads can be reduced by 5%–8%.
KeywordsPCM-wallboards residential buildings hot arid climate cooling energy demand dynamic simulation
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- Al Tayyar I (2015). Success program save energy in mew, internal presentation Kuwait Ministry of Energy and Water.Google Scholar
- ANSI/ASHRAE (2004). Standard 140-2004, Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs. Atlanta, GA, USA: American Society of Heating, Refrigerating, and Air-Conditioning Engineers.Google Scholar
- Cao S, Gustavsen A, Uvsløkk S, Jelle BP, Gilbert J, Maunuksela J (2010). The effect of wall-integrated phase change material panels on the indoor air and wall temperature—Hot box experiments. Paper presented at the Renewable Energy Research Conference, Trondheim, Norway.Google Scholar
- EnergyPlus (2014). EnergyPlus 8.0.0. Energy Simulation Software. Available at http://apps1.eere.energy.gov/buildings/energyplus.Google Scholar
- Fraser M (2009). Increasing thermal mass in lightweight dwellings using phase change materials—A literature review. Built Environment Research Papers, 2(2): 69–83.Google Scholar
- Gyptec Ibérica (2016). Tabela de preços placas de gesso e massas perfis e acessórios. Available at http://www.gyptec.eu/documentos/T_Precos_Gyptec.pdf. (in Portuguese)Google Scholar
- Ministry of Electricity and Water (2010). Energy Conservation Program—Code of Practice, MEW, R-6, 2nd edn. Kuwait.Google Scholar
- Pullen T (2012). Homebuilding & Renovation—Phase Change Materials. Available at https://www.homebuilding.co.uk/2012/05/20/phasechange-materials.Google Scholar
- Rae P (2014). Using Existing Governance to Make Retrofitting Enhanced Energy Efficiency into Existing Buildings, Easy. Available at http: //climatecolab.org/contests/2014/buildings/c/proposal/1309326.Google Scholar
- Reinhart CF, Cerezo C, Jones N, Hajiah A, Al-Mumin A (2015). Kuwait 2030: A Blueprint for Managing Kuwait’s Building-related Energy Needs. Presentation to the Kuwait Foundation for the Advancement of Sciences (KFAS), Kuwait.Google Scholar
- Tabares-Velasco P (2012). Energy impacts of nonlinear behavior of PCM when applied into building envelope. Paper presented at the ASME 6th International Conference on Energy Sustainability & 10th Fuel Cell Science, Engineering and Technology Conference, San Diego, CA, USA.Google Scholar