Abstract
Phase change materials (PCM) can be used in passive building applications to achieve near zero energy building goals. For this purpose PCM can be added in building structures and materials in different forms. Direct incorporation, form stabilization and microencapsulation are different forms used for PCM integration in building materials. In addition to thermal properties of PCM itself, there are several other criteria that need to be fulfilled for the PCM enhanced building materials. Mechanical properties, corrosive effects, morphology and thermal buffering have to be determined for reliable and long-term applications in buildings. This paper aims to give an overview of characterization methods used to determine these properties in PCM added fresh concrete mixes. Thermal, compressive strength, corrosion, and microscopic test results for concrete mixes with PCM are discussed.
Highlights
Net-zero energy buildings (NZEBs) are expected to require very low amount of energy and be able to cover significant amount of their energy requirements by renewable energy sources, produced on-site or nearby [1]
Passive phase change materials (PCM) applications in buildings can increase energy efficiency and savings to help in meeting challenging NZEB goals
The results confirm that the fatty acid mixture used as PCM in this study can enhance thermal mass of concrete without degradation and compressive strength was kept within standards
Summary
Net-zero energy buildings (NZEBs) are expected to require very low amount of energy and be able to cover significant amount of their energy requirements by renewable energy sources, produced on-site or nearby [1]. Recent International Energy Agency Technology Roadmap on Energy Efficient Building Envelopes shows that improvements in the building envelope can reduce total energy consumption in buildings sector by 20% [2]. Among the on-site methods that can be used to achieve NZEBs, passive energy technologies used in building envelopes have been attracting interest. Using phase change materials (PCM) in building materials and structures is one of these passive strategies that can increase energy efficiency and passive use of solar energy [3,4,5,6]. Concrete is the most common building material used. PCM can be added to concrete in the following different forms
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More From: IOP Conference Series: Materials Science and Engineering
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