Papers by Mikael Salonvaara
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Performance, Properties, and Resiliency of Thermal Insulations
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E3S Web of Conferences
Oak Ridge National Laboratory is developing a web tool, built on a rule-based expert system, that... more Oak Ridge National Laboratory is developing a web tool, built on a rule-based expert system, that aids stakeholders in designing energy-efficient moisture-durable walls. Currently, the tool’s expert system database is mostly populated with expert opinion, but work is being done to incorporate durability assessment based on stochastic hygrothermal modeling. Chamber experiments have been conducted to validate the hygrothermal models. The measured temperature and humidity have been compared with those predicted by the hygrothermal model. Experiments and comparison to one-dimensional hygrothermal modeling results were completed with two walls, a Structural Insulated Panel (SIP) based wall and a Concrete Masonry Unit (CMU) based wall. The two walls were succumbed to typical Chicago weather in ORNL’s Heat, Air and Moisture chamber. The walls were sequentially exposed to different scenarios, including diffusion, wetting, air leakage and solar radiation. For the most part, the hygrothermal ...
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Healthy, Intelligent and Resilient Buildings and Urban Environments
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ABSTRACT
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Journal of Building Physics, 2009
The diffusion of water vapor through construction materials is driven by the gradient of partial ... more The diffusion of water vapor through construction materials is driven by the gradient of partial water vapor pressure. Traditionally, water vapor transmission tests (WVT), the `dry cup', and the `wet cup' tests have been conducted with 0 to 50% RH, and from 50% to 100% RH, respectively. Often, desiccants, saturated salt solutions or distilled water are used to generate the required RH. The stability of vapor pressure in WVT tests is of paramount significance because these values are used in calculating permeance. Dry cup tests performed with high permeance materials (>25 Perms) indicated a transient behavior for the two types of adsorbing desiccants; calcium sulfate and silica gel. Monitoring RH inside the dry cup was performed to examine the effect of low and high WVT on the performance of moisture sinks. The results indicate that for highly permeable construction materials, the use of vapor pressures corresponding to 0% RH in calculation of permeance is not appropriate.
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Journal of Testing and Evaluation, 2011
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... congrès annuel de la société canadienne de CFD. Location: Toronto, Ont., Canada. Pages: 317-3... more ... congrès annuel de la société canadienne de CFD. Location: Toronto, Ont., Canada. Pages: 317-326. # of pages: 10. NPArC #: 5763040. Keywords: Building Envelope. ... Get Link: HTML Link: Export | Get Link. Get Link: HTML Link: ...
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Building and Environment, 2001
In this paper the full house hygrothermal performance of an aerated concrete wall system is exami... more In this paper the full house hygrothermal performance of an aerated concrete wall system is examined for the hot and humid climate of Miami. The results clearly demonstrated the limited drying potential for the wall system in that climate. The selected exterior thermal insulation strategies and interior vapor control strategies in this study show the critical behavior of the full
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ABSTRACT The hygrothermal performance,of wood siding and exterior sheathing and the need of cavit... more ABSTRACT The hygrothermal performance,of wood siding and exterior sheathing and the need of cavity ventilation for wood frame wall systems has been investigated. The aim of this preliminary study was to investigate various design strategies to improve the drying performance,and capabilities of wood frame wall systems. A moisture engineering approach was undertaken by conducting a combination of laboratory experiments and
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Journal of Building Physics, 1997
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Journal of Building Physics, 1998
Hygrothermal performance of a new light gauge steel-framed building envelope system has been anal... more Hygrothermal performance of a new light gauge steel-framed building envelope system has been analyzed using three-dimensional thermal simu lations, two-dimensional combined heat, air, and moisture transfer simulations, labo ratory testing in a calibrated and guarded hot box (ISO 8990), weather resistance tests for full-sized structures, and corrosion tests and field measurements at experimental buildings in Ylojarvi, central Finland. The results
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Papers by Mikael Salonvaara