North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: rack power question, and a prediction about "direct heat removal" (DHR)
On Apr 4, 2008, at 5:14 AM, <[email protected]> wrote:
Dealing with heat transport is an important part of the design of spaceflight hardware, with no convenient gases to extract heat in most cases. Heat pipes, which can have thermal conductivities much higher than solid copper, are commonly used to transport heat to outside radiators, but more important is that the entire system is engineered to remove the heat of operation from where it is created to where it can be radiated away. It sounds to me that blade systems are reaching the point where heat transport will also have to be designed into the rack system, and maybe also into the room system. A set of heat pipes could, for example, remove heat from blades and bring it to the floor of the rack, say to a radiator directly into the plenum of the airflow. The working fluid inside heat pipes is unlikely to leak, and typically contains very little fluid, but in any case could be chosen to be something that would be fairly benign if the pipe was breached, say methanol. There might be a business model here... Regards Marshall --Michael Dillon
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