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Frontiers of Structural and Civil Engineering

Front Arch Civil Eng Chin    2010, Vol. 4 Issue (4) : 431-437
A concept of capillary active, dynamic insulation integrated with heating, cooling and ventilation, air conditioning system
Department of Mechanical & Aerospace Engineering, Syracuse University, Syracuse, NY13244, USA
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When a historic fa?ade needs to be preserved or when the seismic considerations favor use of a concrete wall system and fire considerations limit exterior thermal insulation, one needs to use interior thermal insulation systems. Interior thermal insulation systems are less effective than the exterior systems and will not reduce the effect of thermal bridges. Yet they may be successfully used and, in many instances, are recommended as a complement to the exterior insulation. This paper presents one of these cases. It is focused on the most successful applications of capillary active, dynamic interior thermal insulation. This happens when such insulation is integrated with heating, cooling and ventilation, air conditioning (HVAC) system. Starting with a pioneering work of the Technical University in Dresden in development of capillary active interior insulations, we propose a next generation, namely, a bio-fiber thermal insulation. When completing the review, this paper proposes a concept of a joint research project to be undertaken by partners from the US (where improvement of indoor climate in exposed coastal areas is needed), China (indoor climate in non-air conditioned concrete buildings is an issue), and Germany (where the bio-fiber technology has been developed).

Keywords capillary active insulation      integrated heating      cooling and ventilation      air conditioning (HVAC) and building enclosure      dynamic insulation      switchable thermal resistance      variable U-value walls     
Corresponding Authors: BOMBERG Mark,   
Issue Date: 05 December 2010
 Cite this article:   
Mark BOMBERG. A concept of capillary active, dynamic insulation integrated with heating, cooling and ventilation, air conditioning system[J]. Front Arch Civil Eng Chin, 2010, 4(4): 431-437.
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Fig.1  Principles of the capillary active insulation []
Fig.2  Effect of thermal gradient reversal in a sealed specimen on the latent heat contribution to the heat flux incoming and outgoing from the specimen []
Fig.3  Moisture content redistribution in a sealed specimen. (a) Glass fiber; (b) sprayed cellulose fiber []
Fig.4  Wall cavity is ventilated with preconditioned air in summer conditions
Fig.5  Air change per hour tested at 50 Pa for housing built in Canada at different time
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