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In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
A question for the engineers...
Specifically, Brad White, but if you feel you can answer my question, and you are not Brad WHite, by all means, swing away.
It has to do with the popular tank within a tank design being promoted by Triangle Tube.
In Siggys class at Shamrock last week, we were discussing why the GSHP people use plastic instead of copper and if copper would work to a greater degree than plastic due to its higher inherent conductivity, and Siggy said it has more to do with the Reynolds numbers and breaking up the surface boundary layer to promote better heat transfer. Fair enough.
Then, I got to thinking about a problem that I had had with 2 different TT tanks in different boiler rooms, but with the same physical configurations, that being Buderus atmospheric boiler with Buderus 2107 control, and the fact that the DHW tank stayed in demand mode for so freaking long, that it caused shortages of space heat.
Essentially, the tank within a tank design would also suffer from low velocity issues in the annulus between the tanks that would affect the ability of the inner tank to receive heat transfer, thereby prolonging the time necessary to transfer heat. Does this make sense?
I've always just thought that there was so much surface area in these tanks that caused them to work well, but there is more at play than just tank material conductivity. The rep suggested I reverse the flow through the shell side of the tank. Not sure if that would do the trick or not. I'm thinking I can NOT generate enough flow to raise the Reynolds numbers high enough without having to put a BIG pump on line.... Its already running a Grundfos 4075.
What thinks ye bretheren and sisteren of the fluids? Yea or Nay?
Anyone else ever experienced this lag in heat transfer with this style of tank?
It really sucks when property manager is standing there staring at you, staring at a tank that just doesn't want to get satisfied...
Curious minds want to know.
It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
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