دایره المعارف تاسیسات برق (اطلاعات عمومی برق)
It wasn't possible to effectively trace the airflow patterns by this method, because the smoke became quickly diluted by the 12:1 ratio of supply air volume vs. smoke volume. So, we settled on a plan to place the generator beside the pool itself. In picture 2 (see below) one can see the smoke being discharged on the side of the pool closest to the wall diffusers.
The smoke was
observed being effectively stirred up & dispersed. After 15 minutes of
testing, there were no pockets of smoke (or chlorine vapor) that weren't
being stirred up & moved across the pool surface & across the
The generator was then moved to the far side of the pool, across from the supply diffusers.
Pictures 3 & 4 (see below) show the smoke being discharged back toward the supply diffusers.
The line of smoke
traveled for varying distances before being turned back on itself &
pushed & pulled into the exhaust grills. Again there were no
observable pockets of smoke that were not being scattered by the supply
The mechanical engineer, the pool owners and I agreed that the results were conclusive that the HVAC system is doing it's job. The Colt 4 generated an adequate amount of high quality, non-staining, benign smoke for this test.
The visibility with the smoke generator on for 20 minutes & the pool exhaust fan off varied from 60' - 100'. I definitely could not see to the far end of the pool enclosure and it was difficult to see across the width of the room. This was in the Natatorium which measures 75' W x 150' L x (29-42') H. The calculated volume is 353,594 cu ft.
As you can see from the pictures, the visibility with both supply & exhaust fans running (42,000 CFM supply & exhaust air) was barely the full length of the Natatorium - 150'. With both fans running the air exchange rate is 7 Air Changes/Hr (8.6 minutes to replace 353,594 cu ft of air). And, the HVAC system works so well that 12 minutes after turning the exhaust fan off, there was no trace of smoke so; kids could be allowed in to swim.
A final note: During an
earlier aborted test we had the Colt 4 and the supply fan running for 20
minutes without the exhaust fan operating. The pool room filled up with
smoke to a visibility of about 1/3 of that in picture 1. It
was great to see how much smoke this little smoke machine can produce.
Thank you for your assistance..."
Air Balance Associates
قصه های قبیله
جذابیت های برق
در ستایش معماری
تکنیک های نورپردازی، مهندسی روشنایی
فکر اقتصادی، کارآفرینی
تکنولوژی های روز دنیا
504 لغت آیلتس IELTS(ضروری برای همه دانشجویان)
شرط پیشرفت+مدیریت زمان و انرژی
اطلاعات علمی ساده و خلاصه
خلاقیت های ناب ناب
کافه کتاب،فرهنگ و ادبیات
رسانه (ایران، بین الملل)
خنده های رنگی رنگی
دیدنی های تو دل برو
دیالوگ های ماندگار
وقایع و تصاویر تاریخی جذاب، گردشگری
ویرایش نشده ها
معرفی نویسنده و مدیر وبلاگ