QUOTE(hypEr_mad @ Apr 19 2007, 12:37 AM)
bro remember to tell me on ur exprience on the hygrostat oh hehehe, yea regarding my place there just came back with the readings, 33.5 C n 90% higest reading, min reading is 28.5 C n 68% so in that case the min i think should be nite time dy ler haha coz my timer never set for it to work at nite, any idea to bring down the heat ? like extra layer at the celling top or fan mayb ??? wat is the most ideal opening for the birds to fly in ?? hight from the ground lvl to the place where the hole is located at, and the turning point / partition of S curve? really need to save that place up coz its still empty
Your first and foremost problem to overcome is the high temperature. What's the size of your farm? What type of building? Concrete or wood? What type of roof top? Zinc / asbestos or flat concrete? There are various types of farm cooling method. Combination of few types should produce the best results.
1) Roof top water sprinkler (Can be timer controlled if use electric water pump)
2) Turbine ventilator. Draw out hot air from internal to external. Need to install grill on the ceiling and duct direct to roof top. (Quite costly but no power needed. Number of unit depend on size of farm)
3) Exhaust fan. (Cheap, can be timer controlled. Choose the type with grills both side. Pic attached is Khind 10" VF100)
4)Sufficient 4" PVC pipe type ventilation holes.
I've seen farms using extra layer of fiber glass or polystyrine on the ceiling as ceiling heat insulation but they're not so effective if the roof is zinc. The insulation slower the heat from outside to enter but also slower the heat from inside to go away. Because sometimes heat also come from not only the roof but the walls as well. Insulated ceiling may cause a situation they called "Microwave effect" where internal a lot hotter than outside. If your roof is "A" shape type then put insulation layer at the area ceiling nearest to roof. I've tested mine with infrared thermometer. Ceiling nearest to roof are hottest.
According to successful farmers currently the best type of entrance hole is :
1)
Open roof top entrance. - This is one of the favourite. Entrance size as big as 6'x6'. Since rain will direct go in you'll need a water pool and draining system down the entrance. Problem with this type is theft and air current not stable.
2)
Dog kennel/Tower - Another favourite. Swiftlet feel safer nesting inside. But take few days time for new swiftlets to familiarize with the entrace and fly path.
You may see side window entrance at old farms but it's not recommended for new farms.
It's recommended to use mid range/long range tweeters at the entrace.
"turning point / partition of S curve" I think that area is what they call roving area. An area between nesting area and entrance hole. This area should be painted black/cave like colour. Roving area is for young birds to learn to fly and others to socialize. The S curve act as light barrier into nesting area as they need very dark in nesting area. Bear in mind this species of swiftlet need 4-5 feet to make a turn. You should have proper facing tweeters to guide the birds from entrance into roving area then guide them into nesting area.
This post has been edited by seeseng: Apr 21 2007, 07:28 PM Attached thumbnail(s)
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