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Tuesday, June 17, 2008

Usage of Temperature Sensor To Activate Mist Spray System !!



The installation of the mist sprays in my Bentong BH went well.

Initial problem was due to low pressure from storage tank connection. After switching to direct water pipe, the mist spray system went very well. Infact too well.

Basically the "Smart Degree" sensor uses a thermocouple wire to detect the room temperature and once the temperature hit your high temperature setting, it will activate your water pump thus allowing your mist nozzle to spray those filtered water.

Example: If you set your high temperature setting at 29*C the pump will receive the electrical energy to operate push the water to those nozzles. Once the water are sprayed in your nesting areas, the temperature will automatically drop due to the latern heat of evaporation.

The trouble is when your temperature hit just one degree below the set high temperature. In this case 28*C. Once the temperature hit 28*C the sensor will shut the power and the pump will stop operating. Though there are still water ozzing out, the temperature will go down, the most to 27.5*C.

Immediately after this, due to the current hot weather, the temperature will immediately rise. At 4pm, the rate of rising was so fast, it takes less them 10 minutes to activate the pump to move those tap water again.

Well with this routine pumping, the amount of water on the floor will be enought to flood the whole floor.



This is something that not very encouranging but I guarantee you that your room temperature will be always below the setting point.



So how do you prolong the 10 minutes lap to perhaps half an hour?

Firstly, you need to avoid too much hot air from coming into the nesting room. Shut all of them down but open just one.

Secondly, you need to ensure that your top roof are well cooled. Make sure there is a kind of roof or spray some water regularly.

You need to insulate those walls (external part) that are coming in direct contact with the everning sun.

You need to make available more water traps (pots with sprays perhaps) in the nesting areas.

To avoid flooding you can place a container just below the nozzles to trap the water.

Place two humidifiers per floor to ensure that the mists will take away more heat out of the nesting room.

How about increasing the temperature setting up by one degree ie 30*C?

It is getting very interesting with every new problems when you come face to face ....

5 comments:

seeseng said...

What if the %RH already 90% but temperature still at 29dg C? Is it practical to control temperature by increase air humidity? Can humidity cool down warm room temperature?

kaijia said...

What picture is it ........water pump or mist spray pump

Pak Harry The Swiftlet Anthusiast !!! said...

Ah Seng,
The function of the humidifier is to actually spray those water droplets into the surrounding. Once the droptlets are in the air some will stays as water while some will be evaporated. Evaporation is when the heat from the air turns these vapor into gases. When this transformation takes place your room temperature will drop. So the answer to your question is yes....

Pak Harry The Swiftlet Anthusiast !!! said...

Kaijia,

The 2 pumps are used one for the mist spray inside the BH and the other for the water sprinkler nozzles on the rooftop.

kaijia said...

May I know the cost of the mist spray pump and where is it available