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peck06

Been ask by the building firm I sub for to find some regulations about office ventilation and air exchange in habited offices, I told him that would be building regs rather than leccy regs but he asked me to look anyway. Just wondering if anyone know any requirements for fresh air and ventilation in offices?

Being asked to do this more and more now. Anyone ever done any kind of air exchanger installs or know of any systems in use? Last time I done one in an x-ray room at a dentist I just put and extract fan blowing in and an extract fan blowing out. Are there any units that I could put above the suspended ceiling that will suck fresh air in and stale air out?

Cheers for any suggestions.
 
looked at that . then thought... open the bloody windows!
 
Opening the windows was my point, but apparently its not good enough as many people that work in offices are incapable of opening windows, or maybe its a health and safety risk these days to have an open window in offices?? To be fair alot of the work is done in offices which hold sensitive information so the don't like having open doors and windows, they don't even like letting workmen in (this is a local office for local people, springs to mind)

That link is very handy, I have put it in my favourites ;)
 
Think you're after a heat exchanger unit that will pull out the stale air and pump in clean air but at the same time it warms up the clean air using the heat in the stale stuff. Something like this would be my immediate thought but on a larger scale. I'm sure I saw Rexel Senate offering a design service for this sort of thing last time I was buying some gear so maybe worth enquiring if you've got a local branch.
 
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Air movement systems for an office block would almost always be specified by a consultant along with the HVAC specs. It's a complex issue usually involving rates of air in and out as well as pressurization of certain areas in relation to others for fire safety purposes As a sub-contractor I wouldn't get involved if I were you, there's too much scope for humping the pooch.
 
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Air movement systems for an office block would almost always be specified by a consultant along with the HVAC specs. It's a complex issue usually involving rates of air in and out as well as pressurization of certain areas in relation to others for fire safety purposes As a sub-contractor I wouldn't get involved if I were you, there's too much scope for humping the pooch.

Have to agree this is not a job for a electrician but a HVAC specialist as if there are different sized offices then there will be different air flow to acheive the required number of air changes per hour etc.
 
and if the staff have been on the vindaloos the night before, you would need a booster system to remove all the methane.
 
Evening All.

Just having a look around your forum after having my interest in electrics renewed whilst starting my BS7671, 2832 thingy today.
I'm an air conditioning/refrigeration engineer by trade.

The figure you are looking for is 10 litres per second per person.

Give me some numbers and i'll try to help more.

Steve
 
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There is a calculation for this , solar gains ( heat produced by the sun through windows etc ) x enviromental gains ( computers, copiers p.c, s etc ) x occpency ( number of persons in the space )
divide this by 3 multiply by 6 devide this by 1.733 , obtain a sledge hammer closest to the area to which your calculation equated and smash hole in the wall job done!!!!
 
There is a calculation for this , solar gains ( heat produced by the sun through windows etc ) x enviromental gains ( computers, copiers p.c, s etc ) x occpency ( number of persons in the space )
divide this by 3 multiply by 6 devide this by 1.733 , obtain a sledge hammer closest to the area to which your calculation equated and smash hole in the wall job done!!!!

:):):) you been on the sherry?
 
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