Wednesday, May 2, 2012
A True Observations On A BH Using Light Weight Bricks !!!
"The wall temperature now is 38*C."
That was the SMS that I send to a BH owner at around 6.22 in the evening of 30/04/12.
It was a pretty hot day and no rain for almost 2 weeks at the location.
The reading was read from a temperature/humidity sensor that was hung on the wall facing the west.
Prior to this SMS I did send him a few others as follows:
April 30th 2012 at 12.36 pm : VIP room temperature now is 29.9*C and increasing....
April 30th 2012 at 2.57pm : VIP room now is 32.8*C.
April 30th 2012 at 6:02 pm : VIP room now is 34.5*C.
April 30th 2012 at 6.22pm : The back wall is now 38.0*C.
This rise in temperatures is coming from those four walls of the house.
The issue here is the effectiveness of those light weight bricks that the contractor used as the wall.
The outer and inner surfaces were plastered with a thin layer of cement but the heat seems to travel into the BH very vigorously. I mean this should be the case.
The myth about the effectiveness of using this light weight bricks seems to be not very accurate.
Most of the brick manufacturers will make you believed that the light weight brick brick are superb in blocking those heat due to those air bubbles caused by those foams.
But in this particular case it was not performing as per what were told by those manufacturers.
I am pretty disappointed with the performance and I would like to advise those who are new in this line and wanted their first BH to be erected please be careful.
The dual walls system with an air gap in between is much better.
So now what will be the next course of action?
I told the BH owner that it will be a big mistake to put the sound on if the internal temperatures (upstairs and downstairs) are not lowered down.
"The birds will enter your BH but after a short period of time they will vacate your BH within about 5-8 weeks.
After that they will no longer enter your BH. The picture of how hot your BH is will be in the mind for a very long time. This BH is not suitable to raise a family. So they will stay away or black list your BH."
"So what should I do Pak Harry?" he asked.
My answers to him:
"The heat are coming from all the four walls of your BH and I think you need to stop direct sunlight hitting your external walls by erecting another wall. This additional wall must be something that will form a kind of shield to provide shade on the wall.
It must be something light and it must not be touching your BH main wall. Provide a gap of around 8 inches.
Remember the new layer of walls will take the heat from the sunlight and once heated it will dissipate its heat to the air, both in front and at the back.
The air in between the gap will become lighter and will move upward. In fact the air gap become like a heat shield helping your BH external wall to be cooler.
Cool air are denser than hot air, from the padi field, will help to push the hot air upward.
In this way the actual walls of your BH will be cooler thus your BH internal walls will be at a much lower temperature.
Once your external wall is not hot it will automatically help to reduce the internal wall temperature.
We are not sure by how much but I think it can reduce by 3-5*C.
Another proven method is to use those bubble sheet inside your BH.
Use proper type of bubble sheet that have the ability to retain 29*C even if there is a blowing flame onto the opposite surface.
(I have a few rolls with me right now)
If I were you try the external wall first and if you have additional fund try to apply both.
You have very little choices but to lower your BH temperature immediately.
So you thought that having a BH is just the new beginning of a new and interesting adventure but I think this BH is more like the start of a new headache.
Well look at it as a new challenge. Live without any challenges is boring !!!
You call call 017 7551318 if you are facing the same high temperature problems.
I am here to give my best help to make your BH a cool place for those swiftlet to stay.
at May 02, 2012