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What temperature does red bulb break in fire sprinkler system?
Wiki User
∙ 11y ago
68 degree centigrade needs to break the red bulb in the fire sprinkler.
Wiki User
∙ 11y ago
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What is the liquid in a frangible - bulb fire sprinkler?
The glass bulb inside a fire sprinkler head is filled with a heat sensitive liquid (e.g., glycerine) that expands faster than the glass bulb as it gets hotter. Eventually, it expands so much that it causes the glass bulb to burst, releasing the water behind it.The different colors of liquid contained within the bulb correlate to the temperature at which the sprinkler head will activate:Orange - 135oFRed - 155oFYellow - 174oFGreen - 200oFBlue - 286oFPurple - 360oFBlack - 440OFDifferent colors are used in different environments depending on the average ambient heat in said environment. For instance, if you have a storage facility that needs to be kept at temperatures higher than 135 F, you can imagine why you wouldn't want a orange-bulbed fire sprinkler!
When wet bulb temperature and dry bulb temperature are equal?
for air water system wet bulb equals to dry bulb at 100 % relative humidity for that given temperature of air.
What has a low melting point and is useful in sprinklers?
modern automatic sprinklers use a glass bulb that is filled with a fluid that boils and expands at a preset temperature. the glass bulb has a small bubble in the fluid. when a fire causes the fluid to boil, it shatters the glass bulb, which is keeping the waterway seal of the sprinkler in place. When the seal is gone, water can flow through the sprinkler orfice, and extinguish the fire. older sprinkler models use a link and lever arrangement, with a link of solder that melts at a preset temperature. The link and levers of the sprinkler mechanically hold the waterway seal of the sprinkler closed. When the link melts, the mechanical seal is gone, and water can flow through the orfice.
What exact type of liquid is used in fire sprinkler bulbs to explode by thermal expansion?
It depends on the temperature rating of the particular bulb, but all bulbs are filled with aproprietary glycerin liquid.
How much water is needed for a sprinkler system?
The most common fire sprinkler system is a wet pipe system wich always has water in it. The sprinkler heads have a heat sensitive element, most commonly a glass bulb filled with liquid that expand when exposed to heat, after a certain temperature is met , usually 160 degrees or more the glass bulb breaks and allows water to flow on the fire in a uniform water density. The sprinkler system may have an alarm device that sounds an audible alarm in the building, and/or call the fire department. The system may have a connection for the fire department to add to the automatic water supply. there are other types of systems, dry-pipe, preaction, and others which are similar but do not have water in the piping initally due to concerns of freezing water in the system, or sensitive areas where accidental water damage would be a greater problem than fire.(museums, computer rooms, etc)
What is the relationship between evaporation and the wet-bulb temperature terms of energy?
The wet-bulb thermometer is a type of temperature measurement that reflects the physical properties of a system with a mixture of gas and vapor. Hope this helps!
Why did the wet-bulb temperature record a lower temperature then a dry-bulb temperature?
the evaporation off the moisture on the wet bulb absorbs the heat.
What is atmospheric depression?
it is difference between wet bulb temperature and dry bulb temperature.
What would the dew point temperature be when the wet and dry bulb temperature are the same?
the "current" temperature, ie, the temperature at which wet bulb and dry bulb are the same. when the wet bulb and dry bulb temperaturs equalized the dew point emperature equals them, because the air is saturated now.
What does a wet bulb and a dry bulb measure?
A wet bulb measures the temperature after water evaporation allows to cool and a dry bulb measures air temperature.
What is the dew point when the dry bulb temperature is 14C and the dry bulb temperature is 8C?
-9c
Why cant you touch a halogen bulb?
Because if you touch it, you may get dirt or oils from your skin on the bulb. Since halogen bulbs operate at a much higher temperature than conventional bulbs, the contaminants may cause the bulb to break. If you do touch the bulb, clean it with an alcohol swab before installing it.
