Cooling Suggestions

[spikemixture]

I have a TS1277 and TVS1282

I live in the Philippines and it is always hot.

They are not in a cabinet but the room can get hot (no AC)

I am looking as external devices to help cool them down.
USB PC case fans at the back to help drag out more air ?

There appears to be no obvious holes at the front or sides to blow more air thru.

cheers

[dolbyman]

You have to get your ambient temp down...so an A/C is the only way to cool down your equipment in a hot climate.

No amount of airflow will cool it down below ambient

[spikemixture]

Surely more air is better ?

[dolbyman]

but if you cool from a ,lets say, 35C baseline..no component will go below that..no matter the airflow

[spikemixture]

I don't quite get it!
With your theory why have fans ?
If fans in electronic equipment are blowing the same air, why have them ?
Isn't moving air cooler that ambient air ?

Anyway I will be putting a 12cm fan blowing air into that long vent at the back of the NAS.

Thanks ..

[dolbyman]

Isn't moving air cooler that ambient air ?

No .. A very common misconception

The air is the exact same temperature , your skin makes it (feel) cooler due to evaporating sweat (works better in dry climates than in more humid ones),

Only way to really cool a room is a heatpump (A/C) to move the heat from the inside to the outside. Even those tabletop swamp coolers don't 'really' work, as they just use a tiny bit of evaporative cooling (like the skin effect) but make the air more humid (and are a breeding ground for air born bugs and other nasties)... Yes I know some very dry areas of the world can use large roof mounted evaporative coolers to cool down the inside air, but this is limited to some areas of the world.

[Kunzite]

Surely more air is better ?

Indeed it is. But, dolbyman is absolutely right, you'd be moving air of the same ambient temperature, and at best you can cool down the components (processor, SSDs, HDDs) to a few degrees above that ambient temperature.
Typically, I guess you could get 15-20 degrees above ambient, with the NAS basically idle. And that's not a bad result.

Since he didn't explicitly said this: moving air is better because you'd evacuate the air which got hotter by heat transfer from the NAS components, and you'd introduce more ambient temperature air.
But - and he did say this, and this is the essential part - you need to have a decent ambient temperature to begin with.

[jaysona]

I don't quite get it!
With your theory why have fans ?
If fans in electronic equipment are blowing the same air, why have them ?
Isn't moving air cooler that ambient air ?

Anyway I will be putting a 12cm fan blowing air into that long vent at the back of the NAS.

Thanks ..

Someone fell asleep during high school science class.

A fan that is moving air does not cool a room. The fan keeps the temperature of the room at the same temperature, it just moves a greater volume of air past a surface. When the moving air molecules pass over a surface, each molecule can move a little bit of heat (convection process) away from the surface. The greater the number of air molecules that pass over a surface at a given rate and period of time, the more heat that can be removed.

With no fan moving the air, the only way for heat from a surface to be dissipated is by convection, this is a very slow and inefficient process. Given enough time a closed room with no external air exchange and with only a fan to move the air around within the room, the ambient air temperature would eventually reach the same temperature as the warmest surface in the room.

[spikemixture]

I went to science class a very very long time ago.

So what about a water cooler cpu style setup sending cool air into the back of the NAS?

[dolbyman]

Water cooling can also only cool to ambient temp max ... not lower
Water is a better heat conductor than air, so you can more effectively move the heat to a larger cooler area elsewhere (radiator), this area can be larger than what would effectively fit on the CPU itself, making it more effective