Heat exchanger

[Rich]

I was wondering if anyone out there has installed a system useing thier household boiler with a set-point and a heat exchanger,Which would be installed inside house/basement???

Thanks,
Rich

[BrownianHeatingTech]

Using a heat exchanger is a great way to heat any hot tub. With something like a Snorkel, if you are totally eliminating the stove, you also get more seating room from the same size tub.

You can use an external heat exchanger, or an immersed coil of corrugated stainless steel tubing (you just need to protect the tubing from contact with feet, since it will be quote hot).

I'll be adding a sunroom onto my house soon, and installing a Snorkel tub in it. I'm going to install a continuous bench all the way around the tub, with a length of stainless steel tubing coiled underneath it. Slats on the front will have gaps to allow water flow, but the gaps will be too small for feet, so no one will get burned.

One thing to be careful of is freezing temperatures, if the hot tub is outdoors. Another is that you want a secondary safety control, in addition to the setpoint control, to shut down the heat exchanger pump if the tub gets too hot.

Joe
www.brownianheating.com

[Hugh M Harbin]

I just read your post and am interested in the use of a stainless steel coil for increased efficiencies (i just hate to see so much heat go up the chimney and not be utilized)...

I am at a starting point with this kind of thinking, but any information that you or anyone else can share would be appreciated.

If I remember my physics classes (yea right, about 35+ years ago), it seems that if you immersed two ends of a hollow tube in the tub, and heat the coil with water, you should create a siphon and thus a low tech jet of hotter water.........

If this is basically what drives this kind of thinking, how is this coil integrated into the system, inside the stove pipe, around the stove pipe, and so on?

Do you have any other sources i could tap into?

Regards