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Wind Direction in Layouts
- gkumar
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What are the different wind terms & their values, we use in our drawings….??
Why we show a “Wind Rose†in our layouts…? Is it mandatory to show or it differ client to client requirement…?
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- Anton
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Having wind information will help you to position, for example, cooling towers.
Take a look at the training section that deals with Equipment location:
Section - II A: General Guidelines for Equipment and Piping Location, Spacing, Distances and Clearances pipingdesigners.com/Training%20- ... n%202a.htm
Locate cooling towers downwind of buildings and equipment to keep spray from falling on them. Orient the short side of the tower into the prevailing summer wind for maximum efficiency. This means that the air flow (wind) will travel up the long sides and be drawn in to both sides of the cooling tower equally. When the wind is allowed to blow directly into one long side it tends to blow straight through and results in lower efficiency.
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- 11echo
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This is one of those pieces of information that “needs†to be indicated WHEN it is a consideration of your design.
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- AbhijitN
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Facilities such as offices, store rooms, admin buildings, change room, canteen, workshops etc. are preferably to locate upwind or (at least) cross-wind of the prevailing wind direction.
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- Jop
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Items such as:
- Cooling Towers
- Flares
- Open flame sources (Fired Heaters, Fired Boilers, etc)
- Unplanned Vapor leak sources
- Occupied buildings
- Tank Farms
In most places wind does not always blow in the same direction all the time. I worked on a project once where 50% of the year the wind blew East to West and the other 50% of the year it blew West to East. I had to locate a large 10 cell Cooling Tower some place. I lined up the long axis of the tower on the East/West line of the prevailing wind. Now during the summer and winter season the wind traveled down both of the long sides of the cooling tower and was sucked in the cells equally all year. The other equipment was located a few hundred feet to the North of the cooling tower and out of the over spray zone.
Once the Overall Plot Plan is approved and the individual Unit Plot Plans have been created using the (wind) information from the Overall Plot Plan you would not normally need to repeat the Wind Rose on any other documents.
Do it once and Do it Right
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- AbhijitN
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Also, another important point to know is the way the cooling towers need to be located ideally to have better efficientcy from the cooling towers.
I am working on a project where there are 3 prevailing wind directions (unfortuntely)
March – April NW
May – June SW
Remainder SE
But depending on the above information South-East is the direction seems to be predominant for me where most of the times in the year wind flow direction is (SE). I will consider this as the governing thing while deciding the location of wind flow affected pieces of equipments.
Correct me if somebody thinks otherwise!!
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