On this unusual commission we supported Tyrens, who worked with the Swedish Police to help refurbish a portfolio of police stations. All Swedish Police stations include a gun range for training and, in some locations, there had been reported issues of poor air quality form residual gun smoke and other particulates which have the potential to lead to respiratory problems; particularly for instructors who spend a lot of time in the range.
Our consultants performed a number of steady-state, three-dimensional and single-phase simulations, utilising ANSYS Fluent simulation technology to compare different arrangements of fresh air inlets and extraction outlets resulting in optimal arrangements to minimise the recirculation of particles near the shooters and overall exposure of particulates, whilst also evaluating the possibilities of multiple shooting positions. Our studies and subsequent report helped determine a standard model for effective, safe ventilation that could be replicated across the Swedish police station portfolio.