I wonder if any of you guys would have any idea of the electrical demand for the pumps for a water mist sprinkler system? Five floors, with the ceiling of the top floor being about 25m above the tank in the basement. Each storey is around 400m2. I know that it is a bit of a daft question but we are on our limit with maximum demand and will probably have to put the pumps on a priority arrangement. I just want to get a heads up An inkling would do.
Pump power isn't that high as you are only delivering a small water quantity albeit as a high "volume" mist - but it is a high pressure system so expect pumps in the region of 10 - 30kW
If power is genuinely a problem (and possibly back up may not be available), then you might consider gas pump variations - basically cylinders of distilled water, driven by a cylinder or two of argon or nitrogen - completely mains free essentially. Typically a single "unit" will do about 250m3 based on a oil fire load (big genset for example) - you can have variants of tank town water supply and a gas driver pump fed from the 80kg, 300 bar inert gas system
Alternatively, if you can't run electric pumps, how about compressed air driven pumps from a small compressor and big receiver - basically trading instantaneous demand for long term low level energy input
Speak with a supplier, based on the hazard class being protected, they will usually be able to give you a pump power rating based on selected system pressure and flow rate - or just apply mass flow rate x pressure to give kW and add a bit for motor and pump efficiency
Pump power isn't that high as you are only delivering a small water quantity albeit as a high "volume" mist - but it is a high pressure system so expect pumps in the region of 10 - 30kW
If power is genuinely a problem (and possibly back up may not be available), then you might consider gas pump variations - basically cylinders of distilled water, driven by a cylinder or two of argon or nitrogen - completely mains free essentially. Typically a single "unit" will do about 250m3 based on a oil fire load (big genset for example) - you can have variants of tank town water supply and a gas driver pump fed from the 80kg, 300 bar inert gas system
Alternatively, if you can't run electric pumps, how about compressed air driven pumps from a small compressor and big receiver - basically trading instantaneous demand for long term low level energy input
Speak with a supplier, based on the hazard class being protected, they will usually be able to give you a pump power rating based on selected system pressure and flow rate - or just apply mass flow rate x pressure to give kW and add a bit for motor and pump efficiency
