Journal
ENERGY AND BUILDINGS
Volume 112, Issue -, Pages 159-172Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2015.12.006
Keywords
PCM in building envelopes; Fanger thermal comfort; EnergyPlus simulation; Payback period
Funding
- Spanish government [ENE2011-22722]
- European Union's Seventh Framework Program (FP7) [PIRSES-GA-2013-610692]
- Education Ministry of Chile [PMI ANT 1201]
- CONICYT/FONDAP SERC-Chile [15110019]
- CONICYT/FONDAP [PMI ANT 1201]
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In buildings, HVAC systems consume a high amount of energy to provide thermal comfort for occupants. A methodology is presented in this paper to control thermostat operation of the buildings considering the effects of indoor and outdoor boundary conditions and phase change material (PCM) characteristics. EnergyPlus v8.1 building energy simulation software was used to analyze the energy performance of the PCM incorporated building models and to implement Fanger model to control HVAC thermostat operation according to BS EN 15251:2007 thermal comfort categories. Three types of building HVAC schedule, PCM with different melting points and layer thicknesses were studied for Madrid climate zone. Moreover, the impact of occupants clothing on the energy consumption was investigated. Furthermore, payback analysis was conducted to find out the economic benefits of PCM integration into the building envelopes. Application of PCM improved the cooling and heating energy performances except for the office model in winter (heating period). Additionally, higher energy savings and lower payback periods were observed when PCM with higher melting point was applied to the buildings. Eventually, energy savings in PCM incorporated models were found to improve further when occupants changed their clothing behavior in winter. (C) 2015 Elsevier B.V. All rights reserved.
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