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Wind Direction in Layouts
- gkumar
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14 years 3 months ago - 14 years 3 months ago #7729 by gkumar
Wind Direction in Layouts was created by gkumar
Could anyone explain me about the wind directions philosophy which we show in our piping drawings (like GAD, Plot plan).
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…?
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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14 years 3 months ago - 14 years 3 months ago #5580 by Anton
- If you're the smartest person in the room ... you're in the wrong room.
Replied by Anton on topic Re: Wind Direction in Layouts
One of the reasons you would like to know the prevailing wind direction, when laying out a site is to help you position items such as cooling towers.
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
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.
- If you're the smartest person in the room ... you're in the wrong room.
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- 11echo
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14 years 3 months ago - 14 years 3 months ago #5573 by 11echo
Replied by 11echo on topic Re: Wind Direction in Layouts
As a general rule you won’t indicate wind direction on Piping Plans. However in certain instances it would be “nice†too know! I’ve seen where the prevailing winds took exhausted steam to the near by turbine air intake (in arctic conditions) and iced it up. I myself have indicated prevailing winds at H2S scrubber sites to indirectly explain why that equipment is located at down wind edge of the facility.
This is one of those pieces of information that “needs†to be indicated WHEN it is a consideration of your design.
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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11 years 7 months ago - 11 years 7 months ago #6624 by AbhijitN
Replied by AbhijitN on topic Re: Wind Direction in Layouts
I feel it is always good to have prevailing wind direction shown on the layout drawings.
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.
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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11 years 7 months ago - 11 years 7 months ago #6625 by Jop
Do it once and Do it Right
Replied by Jop on topic Re: Wind Direction in Layouts
The Wind Rose (wind direction indicator) should be mandatory on all Overall facility Plot Plans. During the development of the overall plot plan is when you consider and fix the location of all major items that would be affected by wind.
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.
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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11 years 7 months ago - 11 years 7 months ago #6626 by AbhijitN
Replied by AbhijitN on topic Re: Wind Direction in Layouts
Thanks for the valuable post Jop!
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!!
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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