Most BH owners do not have the faintest clue how to use those exhaust fans installed by their "Consultant".
They are either too lazy to use their brain or a pious follower of what their "Consultant" have set in their BH.
Please consider these points:
a) Outside air is no good for your BH.
I advise you to buy a thermo-hygrometer and check the normal air temperature and humidity. Just do this for a day or two and record them every hour.
Record those hourly readings and plot a graph to see how do these readings moves for a 24 hrs cycle. Start as early as 5.00 am and finished the next day at 5.00 am too.
Once you have the graph you will observed that most of the daytime, from say 10.00am till 10.00pm the readings are not suitable for your BH.
Remember your BH internal temperature should be within 26*C to 29*C and the Humidity level recommended is 80% to 95% RH.
Outside air, their day time temperature now is around 33*C and Humidity around 62%RH. Absolutely not healthy for your BH.
b) What happen when you operate those exhaust fans?
Most of the time those exhaust fans are installed on the ceiling or on the BH walls.
The moment you switch the fans on there will be a suction mode. Those fans will suck the internal air out but at the same time the outside air will replace those vacuum caused.
In the real fact you are pulling in outside air, unhealthy air, to replace those air you are blowing out.
If you know that outside air is not healthy for your BH why are you operating those fans continuously for the whole day?
What happen to those aroma smell that you have introduced by placing those fresh bird shits, ammonia powder/liquid and the rest?
You are infact trowing your money away.
c) The right way.
The best way in using your exhaust fan is to use them to cool and replace the oxygen in the house by switching them at a specific time of the day when the air are cool and rich.
When do you think the outside air is faily cooled and healthy (rich with oxygen)?
I believed in the wee hours of the morning. Like from 4.00 am till 6.00 am.
So the best option is to re time those timers so that the exhaust fans will operate only during the morning hours, about 30 minutes, where you suck those air out and bring in the cool and rich air in.
Do you get me????
d) How do you keep your BH cool during the day time?
If you cannot operate those exhaust fans during the day time, how do you intend to keep your BH cool?
I am sure there are some equipment that are available in the market to do that. You can consider to buy those cool fans or the smart cool. They use water curtain blown with soundless fan as the coolant.
You can also install a water filled containers and blow their surface using normal stand fans. Be careful not to expose those fan in case your young birds might be suck to the fan blades.
Well I might be wrong but in normal circumstances I am right.
If I were you, remove those exhaust fans but use only one small computer fan, one or two per floor and placed it at the ventilation hole opening. Place the fan at the mouth of the ventilation hole. You activate it by using a digital timer running say at 5.00am till 5.30 am. You suck the air into the BH and make sure you place a pail of those birdshit just below the fan.
In this way you allow cool, fresh and rich air in and at the same time you mix the air with the shit aroma . Hmm ... just close your eyes and feel those birdshit breeze oozing into your BH.
If I am one of those birds, I will thank you for being so genious.
A very intelligent way of getting the best out those exhaust fans.
Remember use a bit of those left over brain tissues and do not follow any advises that do not make any sense.
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