PRESSURE LOSSES CALCULATION IN SMOKE PROTECTION VENTILATION SYSTEMS
We researched factors affecting the magnitude of pressure loss value in smoke protection ventilation systems, and suggested Wesbach formula using to estimate the value of the frictional component of the pressure loss in the channel. The influence of fire-retardant valves on the possible pressure loss in ducts was evaluated. We analyzed structures of the for pressure losses in smoke protection ventilation systems calculating algorithms in dependence on their configuration. We presented cyclic algorithm for smoke protection ventilation system calculating based on pressure losses in the branches and in the main line balance.