Re: stock tank warmers
On Thu, 11 Dec 2008 01:46:04 -0800, Don Bruder <dakidd@xxxxxxxxx>
wrote:
Usually no. Depends on the heater, though - floater, or submerged? How
big a tank? What's the wattage of the heater? Submerged is more likely
to ice up, but unless it's ridiculously undersized, wattage-wise, in a
huge tank, or extended periods of sub-zero cold, there should be, at
most, just a "skin" of ice on top. Dunno why, but floaters tend to be
less prone to icing, in my experience...
Water's densest at 4 degC, so as the temperature falls, the water
passing through 4 deg falls to the bottom, where the fish can survive
in lakes and rivers for a while. Meanwhile the surface water cools
some more and ices up - always starting at the surface with the cold
air. So that's the best place for a heater.
Brian W
.
Relevant Pages
- Re: Shuttle insulation
... They rolled the thing back into the VAB to change the tank to one that had a heater already installed, ... I recall this was supposed to eliminate the need for an insulating blanket. ... Engineers also have been studying the threat of ice formations and the possibility they could break off and damage the ship. ...
(comp.dsp) - Re: Tanking test underway
... the shuttle Discovery's external tank early today to collect more data on ice formation and to help track down the cause of two problems that cropped up during a similar test in April. ... At that point, just like in a real countdown, a small team of engineers will head to the launch pad for a detailed external ice inspection. ...
(sci.space.shuttle) - Re: STS-122 External Tank Venting Liquid Propellent (Re: update FD 1...
... the tank in the video, really quite spectacular with the sun setting ... Watch the venting, gaseous venting with a very wide plumb, liquid venting a ... What surprises me are the large chunks of ice. ...
(sci.space.shuttle) - Re: GE Profile Fridge not cooling
... I saw a photo of the defrost timer online and recognized a corner of it as something I'd seen and thus located it inside the refrigerator compartment behind the plastic cover at the top. ... Measuring the input current at over 6A I determined the heater was working. ... This morning I put the timer into a defrost cycle again and I could hear sounds like bits of ice falling in the evap compartment. ...
(alt.home.repair) - Re: ET Insulation
... >>> the primary purpose of the insulation was to keep ice from ... >> repeatedly that one purpose of the insulation - in fact, ... The areas of the tank ... attention given to the ET insulation's role in preventing ice formation, ...
(sci.space.shuttle) |
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