Do you think its possible to replace the plastic coil with titanium? Maybe too cost prohibitive?
http://www.turbotecproducts.com/product5_1.htm
http://www.turbotecproducts.com/product5_1.htm
Rick,
Your local utility may be able to give you KWH usage history. Here in Boston area you can log online and get the data from NStar.
Rick M
I just set one of these up,
Went with 200' 3/8" radiant heating pecs in the 150 rubermaid sump.
Zoned from the recirculating hot water instead of the boiler for two reasons:
1) boiler water is so damn toxic that the thought of even a slight leak was out of the question.
2)domestic hot water at 120deg vs boiler at 180+ , gave some fudge room in a couple of areas. One being temp "creap" after shut off.
in the 150 rubermaid sump.
Well the part about there being a 150 sump was right ....the rest? .. Hmmm not sure where that came from?
Do you think its possible to replace the plastic coil with titanium? Maybe too cost prohibitive?
http://www.turbotecproducts.com/product5_1.htm
The system isn't stand alone yet, still testing.
I'm switching the zone valve with a 2 stage Ranco controler (what else ) the heating stage is set at 78 with a 1deg diff, that means it comes on at 77 and off at 79, I'll set the tubing length so that there is no more than 1deg "drift" once off, that will mean high temp should be 80. Stage 2 will open a ground loop at 82.
why waste it? I guess I meant to day. might as well throw some rock in.
Considering that I used 2300w of electric heaters over this winter and my tank fluctuated all over the place, I figure it can't get any worse, efficiency wise.I like the idea of heating from the domestic hot water rather than the boiler, but in any case I wonder about the savings, have you done any estimates?
Jim