Door Gaps and Natural Ventilation with Adjoining Rooms
Over the last few decades, evolving building codes for energy conservation have increased the airtightness of building construction. However, this tight construction operates from the interior of the building to the exterior. Interior room spaces are not as tightly constructed. Interior walls typically don’t feature insulation, and doors have gaps under them. Some doors have enough clearance to accommodate unlevel floors and allow for airflow circulation in spaces that do not have dedicated return-air registers for each room.
This paper investigates how door clearance can help mitigate refrigerant concentration in the space when refrigerant is released.
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