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    Author(s): CR BoardmanSamuel V. Glass
    Date: 2015
    Source: Journal of Building Physics 2015, Volume 38, number 5, 2015; pp. 389-418.
    Publication Series: Scientific Journal (JRNL)
    Station: Forest Products Laboratory
    PDF: Download Publication  (4.06 MB)


    The moisture transfer effectiveness (or latent effectiveness) of a cross-flow, membrane based energy recovery ventilator is measured and modeled. Analysis of in situ measurements for a full year shows that energy recovery ventilator latent effectiveness increases with increasing average relative humidity and surprisingly increases with decreasing average temperature. A simple finite difference heat and moisture transfer model is developed, which can explain these results and predict energy recovery ventilator latent effectiveness based on simplified physics and material properties. The model parameters are discussed and, in the case of the membrane’s moisture sorption curve and moisture permeability, compared to direct laboratory measurements.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Boardman, CR; Glass, Samuel V. 2015. Moisture transfer through the membrane of a cross-flow energy recovery ventilator: Measurement and simple data-driven modeling. Journal of Building Physics 2015, Volume 38, number 5, 2015; pp. 389-418.


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    Energy recovery ventilator, moisture transfer effectiveness, indoor air quality, sorption, isotherm, moisture transfer model, membrane, permeability, moisture diffusion

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