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Investigation of the efficiency of passive cooling by phase-change materials in light-weight buildings.
Author(s) : OSTRÝ M., CHARVÁT P.
Type of article: Periodical article, Review
Summary
Passive cooling with thermal storage in phase-change materials (PCMs) is a very effective way to improve the thermal stability of rooms with a light-weight envelope. The PCMs used as latent heat storage can absorb the building cooling load during the day and thus improve thermal comfort in a room or a building. But the efficiency of this kind of passive cooling significantly depends on the heat transfer rates between the ambient environment and the thermal storage material. The discharge of stored energy is commonly realised at night. However, the temperature of the outdoor air is often too high in summer for activation of the heat-storage medium. Therefore, it is necessary to use a suitable kind of ventilation at night. Two test rooms were built for comparative investigation of the efficiency of passive cooling with the use of PCMs. One of the rooms has a common light-weight composition of the envelope; the second one has phase-change materials incorporated in the building structures. This article deals with the results of experiments carried out in the rooms and possibilities of activation PCMs for effective passive cooling.
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Details
- Original title: Investigation of the efficiency of passive cooling by phase-change materials in light-weight buildings.
- Record ID : 2011-0197
- Languages: English
- Subject: Environment
- Source: IIF, Note Inf./IIR, Inf. Note/Bull. IIF-IIR/www.iifiir.org - vol. 90 - n. 2010-6
- Publication date: 2010/12
Links
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Indexing
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Themes:
Heat transfer;
Comfort air conditioning;
Thermal energy storage;
Green buildings;
Two-phase secondary refrigerants (PCMs, ice slurries…) - Keywords: Office; Building; Ventilation; Heat transfer; Passive cooling; Review; PCM; Material; Expérimentation; Construction; Change of phase; Thermal energy storage
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