Hi,recently we established a data center in Bhutan. because of its geographical location and high terrain. the temperature over here is low.we have a 3ton precision AC in the data center and i would like to know what must be the ambient temperature required in the data cener over here. when i worked in tropical countries, i temperature i maintained is 18degrees. do i need to follow the same here or will it varies along with the environmental conditions. please help me with your suggestions.
data center cooling
- Thread starter santoshkurakula
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- Sep 28, 2005
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Ummm.... if the room is sealed, and humidity isnt an issue, i dont see how you could go wrong with even 30C.
The thing is, how many machines do you have in the center?
How fast do all those machines collectively heat up the room?
Can your circulation system pull more heat from the room then your systems can put out, and where is the efficient point.
I dont think you need to keep the centers at 18C.
It would totally depend on how heat sensitive the eq u have in the center are in relationship to where they are.
Things closer to a outvent will obviously be kept cooler while things further will be a little warmer, but how much warmer is warmer is the question.
In short depending on how heat sensitive your eq is, the temps you need to maintain in a server room can be quite extreme.
Yes 18C is good, but its very expensive to hold that, and does your eq require that cool of ambients?
Or better yet, does the end of the room heat up that much that you would need to keep it at 18C so the hot end is kept within operational standards?
From Google:
“A thermodynamic analysis clearly indicates that increasing the temperature … will give an efficiency gain to the heat removal from the system,” the IEEE notes in its abstract. “Unfortunately the simple model does not capture all of the components of the overall system and may lead to an erroneous conclusion. In fact, increasing the ambient temperature can lead to an increase in power usage of some components and systems in the data center as temperature goes up. The overall room energy use may only go down marginally or may even go up at warmer temperatures.”
“There’s diminishing returns when you (raise the temperature) beyond a certain amount, because now your cooling systems are working harder to keep up with the increased fan speed on the server,” said Dean Nelson, Sun’s Senior Director of Global Lab and Data Center Design, in a recent video. “You’ve got to find that sweet spot. But it’s not where we are today. It’s not 65. I think it’s probably around 80 to 85.”
So in short its what i sum'd up top.
Ambients are good around 25-27C.
The thing is, how many machines do you have in the center?
How fast do all those machines collectively heat up the room?
Can your circulation system pull more heat from the room then your systems can put out, and where is the efficient point.
I dont think you need to keep the centers at 18C.
It would totally depend on how heat sensitive the eq u have in the center are in relationship to where they are.
Things closer to a outvent will obviously be kept cooler while things further will be a little warmer, but how much warmer is warmer is the question.
In short depending on how heat sensitive your eq is, the temps you need to maintain in a server room can be quite extreme.
Yes 18C is good, but its very expensive to hold that, and does your eq require that cool of ambients?
Or better yet, does the end of the room heat up that much that you would need to keep it at 18C so the hot end is kept within operational standards?
From Google:
“A thermodynamic analysis clearly indicates that increasing the temperature … will give an efficiency gain to the heat removal from the system,” the IEEE notes in its abstract. “Unfortunately the simple model does not capture all of the components of the overall system and may lead to an erroneous conclusion. In fact, increasing the ambient temperature can lead to an increase in power usage of some components and systems in the data center as temperature goes up. The overall room energy use may only go down marginally or may even go up at warmer temperatures.”
“There’s diminishing returns when you (raise the temperature) beyond a certain amount, because now your cooling systems are working harder to keep up with the increased fan speed on the server,” said Dean Nelson, Sun’s Senior Director of Global Lab and Data Center Design, in a recent video. “You’ve got to find that sweet spot. But it’s not where we are today. It’s not 65. I think it’s probably around 80 to 85.”
So in short its what i sum'd up top.
Ambients are good around 25-27C.
Last edited:
Well...thanks for your valuable information. that helps me a lot in understanding the concept. Moreover i still had a doubt. do the external temperature(i mean climatic conditions) show any effect on the data center.suppose in summer the temperature is bit high and in winter vice verse. Do we need to set the temperature, considering all this points in mind.
- Sep 28, 2005
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- 3,389
- 126
a server room should be sealed.
That means outside influence will only impact how well the cooling unit of your AC is performing.
Ignore outside, and focus on inside the room.
If your focusing on outside, it means the room isnt sealed, and then you might have issues with humidity.
The first thing u will notice is all your steel screws starting to rust.
This is a first sign of bad humidity.
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