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Common walls
between houses are a major reason for improper ventilation in
apartment buildings. They make a compulsion for improper
positioning of doors/windows. The shape of the house also
affects the airflow distribution patterns inside the house. In
this work, the effect of various shapes of the house on the
ventilation inside the rooms is investigated with a cross-flow
ventilation configuration, where the total floor area of the
house is maintained as 1000 square feet. Moreover, work also has
been performed to investigate the airflow inside a square-shaped
house with different door/window configurations for various
inlet airflow directions. Besides that, the impact of inlet
airflow velocity on the ventilation process has also been
investigated. From the investigation, it has been observed that
with an increase in air volume flow rate, the area covered with
low-velocity air (< 1 m/s) decreases and the area covered with
high-velocity air ( > 2 m/s) increases irrespective of the shape
of the house but does not follow any pattern for the comfort
condition airflow velocity. The airflow pattern is not changed
significantly with increase in inlet airflow velocity, but the
airflow velocity regions are changed significantly. For a square
shape house, 78% area is covered with a low air velocity region
(< 1 m/s) is the highest with N & E door/window configuration.
62% area covered with high air velocity region (> 2 m/s) is the
highest with N & S door/window configuration. 26% area covered
with comfort flow condition (between 1-2 m/s) is the highest
with N & S door/window configuration. |