Moisture buffering capacity of highly absorbing materials
Cerolini, S., D'orazio, M., Di_Perna, C. and Stazi, A.
2009 Energy and Buildings, 41(2): 164-168
Moisture buffering capacity; Cellulose; Effective thickness; Vapour resistance; Mass surface exchange coefficient
Cerolini, S., D'orazio, M., Di_Perna, C. and Stazi, A., (2009), "Moisture buffering capacity of highly absorbing materials", Energy and Buildings, 41(2): 164-168.
Abstract:
This research investigates the possibility to use highly absorbing materials to dampen indoor RH% variations. The practical MBV of sodium polyacrylate, cellulose-based material, perlite and gypsum is evaluated for a daily cyclic exposure that alternates high (75%) and low (33%) RH% levels for 8 h and 16 h, respectively. The adjustment velocity to RH% variations and the presence of hysteretic phenomena are also presented. The cellulose-based material proves to be the most suitable for moisture buffering applications. Starting from this material's properties, the effect of thickness, vapour resistance factor ([mu]) and mass surface exchange coefficient (Zv) on sorption capacity is evaluated by the use of a numerical model.
This publication in whole or part may be found online at: here.
