Thermal Characterization of Smart and Large-Scale Building Envelope System in a Subtropical Climate

Authors: Andrey A. Chernousov, Ben Y. B. Chan

Abstract:

The thermal behavior of a large-scale, phase change material (PCM) enhanced building envelope system was studied in regard to the need for pre-fabricated construction in subtropical regions. The proposed large-scale envelope consists of a reinforced aluminum skin, insulation core, phase change material and reinforced gypsum board. The PCM impact on an energy efficiency of an enveloped room was resolved by validation of the EnergyPlus numerical scheme and optimization of a smart material location in the core. The PCM location was optimized by a minimization method of a cooling energy demand. It has been shown that there is good agreement between the test and simulation results. The optimal location of the PCM layer in Hong Kong summer conditions has been then recomputed for core thicknesses of 40, 60 and 80 mm. A non-dimensional value of the optimal PCM location was obtained to be same for all the studied cases and the considered external and internal conditions.

Keywords: Thermal performance, phase change material, energy efficiency, PCM optimization.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1100130

References:

[1] J. M. Davies, Lightweight sandwich construction. Oxford: Blackwell Science, 2001, 384 p.
[2] R. Koschade, Sandwich Panel Construction: Construction with factory engineered sandwich panels, consisting of metallic facings and a foamed polyurethane core, Weinheim, Wiley, 2002, 390 p.
[3] S. Raoux, M. Wuttig, Phase Change Materials, Boston, Springer US, 2009, 430 p.
[4] C.A. Balaras, “The role of thermal mass on the cooling load of buildings: An overview of computational methods”, Energy and Buildings, vol. 24 (1), pp. 1–10, 1996.
[5] C.K. Halford, R.F. Boeh, “Modeling of phase change material peak load shifting, Energy and Buildings”, vol. 39, pp. 298–330, March 2007.
[6] A. Tardieu, S. Behzadi, J. J. J Chen and M. M. Farid,“Computer simulation and experimental measurements for an experimental PCM-integrated office building”, in: 12th Conf. Int. Building Performance Simulation Association, Sydney, 2011, pp. 56–63.
[7] M.M.S. Cheung, A.A. Chernousov, B.Y.B. Chan and P. Wang, “Thermal performance of large-scale pre-insulated building envelope in Hong Kong”, in: 6th ECCOMAS Thematic Conf. on Smart Structures and Materials, Turin, 2013.
[8] P. Losada-Pérezet al., “Measurements of Heat Capacity and Enthalpy of Phase Change Materials by Adiabatic Scanning Calorimetry”, Int. J. of Thermophysics, vol. 32,pp. 913–924, May 2011.
[9] U.S. Department of Energy Home page, http://apps1.eere.energy.gov/ buildings/energyplus/pdfs/engineeringreference.pdf, 2013 (accessed September 20, 2013).
[10] A.L.S. Chan, T.T. Chow, S.K.F. Fong and J.Z. Lin, “Generation of a typical meteorological year for Hong Kong”, Energy Conversion and Management, vol. 83,pp. 87–96, Jan. 2006.