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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical generator cooling (Re: Re[2]: telehouse - 25 broadway)
> Date: Sun, 16 Sep 2001 11:45:26 -0400 (Eastern Daylight Time) > From: Alex Rubenstein <[email protected]> > > From what I've heard from 32 Old Slip, the reason for thier > generators to fail was that the intake filters were clogged from > the concrete dust in the air. Hmmmm.... although this situation is far from one's typical power outage, maybe one should not rely on the radiator. Ass-u-ming that one has a steady supply of water: s/radiator-cooled water/external water supply/ It works the same. The only purpose of the radiator is to facilitate cooling _without_ an external water supply, to reuse the existing water. Yes, a contastly-flowing external water supply is wasteful. So we make it "emergency only". Note that the numbers represent thermostat temperatures in degrees Fahrenheit[1], and the arrows signify flow direction (check valves and water pump omitted for simplicity): ~~~~~~ supply ~~~~~~ | V +------<------+ | | V | +--------+ | | engine | ^ +--------+ | | | V | +-----+ | | 165 | ^ +-----+ | | | V | +----------+ | | radiator | ^ +----------+ | | | V | +-----+ +------>------+--->----| 195 | +-----+ | V ~~~~~ drain ~~~~~ [1] Apologies to the standards-abiding, metric-loving people out there. I just don't feel like converting right now. :-) Save for the high-temp thermostat and the external water supply, it looks remarkably like a standard system with overflow. The big disadvantage to this design is that, if one runs out of water, this _will_ overheat. But overheating is imminent when the high-temp thermostat opens (a prerequisite for running out of water), so we were SOL anyway. > -- Alex Rubenstein, AR97, K2AHR, [email protected], latency, Al Reuben -- > -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net -- Eddy --------------------------------------------------------------------------- Brotsman & Dreger, Inc. - EverQuick Internet Division Phone: +1 (316) 794-8922 Wichita/(Inter)national Phone: +1 (785) 865-5885 Lawrence --------------------------------------------------------------------------- Date: Mon, 21 May 2001 11:23:58 +0000 (GMT) From: A Trap <[email protected]> To: [email protected] Subject: Please ignore this portion of my mail signature. These last few lines are a trap for address-harvesting spambots. Do NOT send mail to <[email protected]>, or you are likely to be blocked.
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