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Enter the data about the area you wish to study. You can find these figures in GIS Portal, or by measuring them yourself.<br>
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<b>Ventilation data</b> <br>
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Enter the data on the available means for venting of indoor spaces. For mechanical ventilation, you should check with a specialist for the air flow or air change rate.<br>
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For HEPA filtration, you should enter the air flow of the device. As a first estimate, you way use the following values based on the differnet fan velocities of a specific commercial device proposed by the HSE Unit - Level 6 (max) = 430 m^3/h (noisy); Level 5 = 250 m^3/h (ok w.r.t. noise); Level 4 = 130 m^3/h (silent); Level 3 = 95 m^3/h (silent).<br>
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For HEPA filtration, you should enter the air flow of the device. As a first estimate, you may use the following values based on the differnet fan velocities of a specific commercial device proposed by the HSE Unit - Level 6 (max) = 430 m^3/h (noisy); Level 5 = 250 m^3/h (ok w.r.t. noise); Level 4 = 130 m^3/h (silent); Level 3 = 95 m^3/h (silent).<br>
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<b>Event data</b><br>
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Enter the total number of occupants in the room and how many of them you assume are infected. We have provided common activity types:<br>
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Office/Meeting = typical scenario all persons seated, talking.<br>
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