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- Passive cooling (2)
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- Resetar (2)
- Thermal cycling (2)
- Containment geometry (1)
- Digital design (1)
- Encapsulation geometry (1)
- Glass macroencapsulation (1)
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New methods for designing with phase change materials (PCM) could widen the range of applications of passive systems for indoor cooling in architecture. This paper investigates material and formal strategies for generative architectural design that support the thermal performance of PCM. Dendritic geometry of PCM encapsulation with a large surface area per unit volume is proposed for enhancement of the heat transfer between PCM and surroundings. The prototype of the PCM ceiling component is digitally designed, manufactured in glass and tested in an experimental set-up for thermal cycling. Correlations are made between geometric configurations and cooling performance of dendritic and spherical PCM containments. The presented methodology integrates tools and techniques from digital design and energy technology, with an aim to contribute to novel PCM-based concepts for local thermal regulation in architecture.
In view of growing concerns on climate change and temperature extremes, there is a need to explore novel methods that provide thermal comfort in architecture. Latent heat thermal energy storage with phase change materials (PCM) has been widely researched in last decades in the field of energy technology and proved beneficial for reduction and shifting of the thermal loads and improving the overall thermal storage capacity of building components. Although a variety of PCM containments have been investigated for indoor cooling applications, the examples of exposed, design-oriented macro-encapsulations are rare. This paper presents a study of visible, suspended ceiling encapsulations for passive cooling, made of glass and novel bio-based PCM. The aim is to provide an overview of correlations between basic containment geometries and their thermal behavior that serves as a base for the further design of custom-made PCM macro-encapsulations. An experimental set-up of test boxes is developed for thermal cycling and a comparative analysis of the thermal performance of varied PCM encapsulation geometries. The study concludes that the containments with the large exchange surface and the small thickness offer an optimal material distribution for the temperature reduction in the box. Based on experimental results, suggestions are made on further formal strategies for the design of cooling elements for local thermal regulation.