In high buildings where indoor air is warmer outside, there is a pressure difference between the upper. However, high ventilation rates may result in high energy costs. The room has average air mixing, so assign k = 5.
RDH Building Science Improving indoor air quality in MURBs
The typical corridor pressurization systems are installed to control the transfer of odours between suites and provide makeup air to replace air exhausted by kitchen and bathroom exhaust fans.
The authors designed and installed a whole building ventilation system for a 100 unit five story high rise condominium building that had elevated radon levels on every floor.
Frequent problems include the imbalance of supply and exhaust air, the lack of an unobstructed path for supply Previous diagnostics revealed the low ventilation rate. 47% smaller than the waste carrying pipe. A room measuring 12 feet x 10 feet with a ceiling height of 10 feet is served with a 100% outdoor air ventilation system that delivers 65 cubic feet per minute (cfm) of supply air (q s = 65 cfm) and exhausts 80 cfm of air from the room (q e = 80 cfm).
The building had two levels of ventilated garages under part of the building.
If your fire safety supplier claims to have expertise in this area, ask them for information about other work they’ve done and speak to their clients. Each floor was constructed with post stressed concrete floors and ceilings.
