diffusion

Experimental study of indoor thermal environment for cold air distribution systems using various air outlets

Submitted by on Sat, 07/06/2013 - 16:33

Tests have been performed on several ceiling air diffusers supplied with low air temperatures (6 to 16°C - 90% humidity) to study water vapour condensation on diffusers surface. Results show that a supply air temperature of 11°C avoids most of condensatio

Two dimensional air exfiltration and heat transfer through fiberglass insulation II. Comparisons between simulations and experiments.

Submitted by on Sat, 07/06/2013 - 16:26

The two-dimensional, transient numerical model of heat and water vapor convection and diffusion during air exfiltration within fiberglass insulation, presented in Part /, is validated in Part II, with experimental data for temperature, moisture and frost accumulation, and heat flux. With a few exceptions, the simulation results and experimental data agree within the experimental uncertainty. Exfiltration airflow in the two-dimensional space showed strong entrance and exit effects for temperature, moisture and frost accumulation, and heat flux on the cold side.

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