Numerical study of vertical solar chimneys with moist air in a hot and humid climate

Summary

CFD models of a vertical solar chimney with fixed wall temperature compare airflow and heat transfer for dry versus humid air. Moisture lowered the ventilation rate by roughly 15–26% and raised air temperatures inside the channel. For humid conditions, the authors recommend a 14:1 height-to-gap ratio and a restricted inlet height to maximise airflow while limiting reverse flow.

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