Energy Demand Reduction in Nearly Zero-Energy Buildings by Highly Efficient Aluminium Foam Heat Exchangers

Jaroslav Jerz; František Simančík; Ján Španielka; Jozef Šebek; Jaroslav Kováčik; Peter Tobolka; Tomáš Dvorák; Ľubomír Orovčík

doi:10.4028/www.scientific.net/MSF.919.236

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HomeMaterials Science ForumMaterials Science Forum Vol. 919Energy Demand Reduction in Nearly Zero-Energy...

Energy Demand Reduction in Nearly Zero-Energy Buildings by Highly Efficient Aluminium Foam Heat Exchangers

Abstract:

The capability periodically to store and release the latent heat of phase transition during melting and solidification of Phase Change Materials (PCMs) has been currently the main subject of interest with regard to cost reduction efforts for cooling, heating of interiors and Domestic Hot Water (DHW) necessary for the operation and maintenance of adequate thermal comfort in new modern as well as old renovated residential buildings. The main principle of PCMs facilities to reduce significantly the energy consumption in the building industry of the future is based on the ability of thermo-active heat exchangers to absorb and later to dissipate into the surroundings excessive heat which can be easily obtained from renewable sources (e.g. solar energy, geothermal heat, etc.) directly in a building or in its immediate vicinity. Smart interior tiling and furnishing systems can provide high energy efficiency by stabilizing the room temperature at a level ensuring sufficient thermal comfort basically governed by the thermal conductivity and heat exchange area between ceiling (respectively also wall and floor if necessary) heat exchangers (radiators) and the heat storage medium in the form of PCMs. Unfortunately, most conventional building materials, e.g. aerated concrete, bricks, gypsum, ceramic tiles, etc. are particularly characterized by very low thermal conductivity, which disadvantages them to be used for these purposes. However, highly porous metallic material such as aluminium foam prepared by powder metallurgy [10, 11] is on the contrary excellently heat conductive, which predisposes it to be used for light-weight design of supporting structure of very energy efficient indoor as well as outdoor thermo-active heat exchangers for building industry of the future. This contribution points to the possibility to apply aluminium foam for both the novel innovative roofing system to cover pitched roofs and the interior ceiling panels, with the minimum energy demands for maintaining the sufficient thermal comfort in future nearly Zero-Energy Buildings (nZEBs).

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Periodical:

Materials Science Forum (Volume 919)

Pages:

236-245

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.919.236

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Online since:

April 2018

Authors:

Jaroslav Jerz*, František Simančík, Ján Španielka, Jozef Šebek, Jaroslav Kováčik, Peter Tobolka, Tomáš Dvorák, Ľubomír Orovčík

Keywords:

Aluminium Foam, Energy Efficiency, Heat Exchanger, Zero-Energy Buildings

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* - Corresponding Author

References

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