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Search took 0.00 seconds. Search: Posts Made By: Daox

Forum: Renovations & New Construction

09-25-13, 07:41 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

This specific room is about 14x12, so 168 sqft. ...

This specific room is about 14x12, so 168 sqft. The whole house is about 1600. I'm also planning on using 3/8" tubing for the floor versus 1/2" due to space constraints.

Forum: Renovations & New Construction

09-24-13, 11:04 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

I'm bringing this thread back. I'm pretty close...

I'm bringing this thread back. I'm pretty close to starting to work on the office hydronic floor. I am going to go with a few parallel lines in it. I don't know quite how many yet. Somewhere...

Forum: Renovations & New Construction

01-22-13, 07:58 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Great to hear I'm not the only one thinking along...

Great to hear I'm not the only one thinking along these lines. How is the floor working out for you so far?

Forum: Renovations & New Construction

01-04-13, 11:58 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

I haven't even come close to choosing a pump yet....

I haven't even come close to choosing a pump yet. However, I'm really thinking that I'd like to go with an ECM pump due to increased efficiency and variable speed. This will probably end up being a...

Forum: Renovations & New Construction

01-04-13, 11:55 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Yeah, that would work too. Its a bit more tubing...

Yeah, that would work too. Its a bit more tubing to run, but safer from leak problems.

This might present a problem if you're using a zone control valve though. You'd have to tie them together...

Forum: Renovations & New Construction

11-06-12, 07:33 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

I believe it is. The flow rate is still the...

I believe it is. The flow rate is still the same, and the surface area of the pipe is the same. Flowing X amount of water over Y amount of surface area should net the same heat transfer.

Forum: Renovations & New Construction

10-31-12, 01:01 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

I've still been thinking about this. Another...

I've still been thinking about this. Another downside to having multiple parallel loops in one room is a reduction in the easy of dealing with obstructions and/or oddly shaped rooms. Careful...

Forum: Renovations & New Construction

10-17-12, 09:13 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

I've been researching the idea that purging the...

I've been researching the idea that purging the parallel system would be troublesome because you need enough flow velocity in each parallel branch to move air pockets. This appears to not really be...

Forum: Renovations & New Construction

10-17-12, 08:26 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

The 135W pump is for my solar hot water panel...

The 135W pump is for my solar hot water panel water loop. The solar loop will put heat into a water tank in the basement (which isn't made yet). This loop I'm talking about in this thread would be...

Forum: Renovations & New Construction

10-16-12, 08:32 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Thankfully its not false economy. I've been...

Thankfully its not false economy. I've been talking an engineer I work with (who has done hydronic heating installs) and pressure head increases with the square of flow velocity. So, reducing flow...

Forum: Renovations & New Construction

10-16-12, 12:55 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

I re-ran my calculations for the same floor, but...

I re-ran my calculations for the same floor, but using 6 parallel lines (similar to the 5 parallel lines shown in the image below) since the TEE fitting pressure head was so high in the previous...

Forum: Renovations & New Construction

10-16-12, 07:17 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Thanks JRMichler. I hadn't thought about air...

Thanks JRMichler. I hadn't thought about air bubbles. That is a good point. You would just have to make sure you can achieve the necessary velocity to get rid of air in the lines. This could...

Forum: Renovations & New Construction

10-15-12, 02:59 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Yes, it will choose the path of least resistance....

Yes, it will choose the path of least resistance. Once it starts going down one tube lengh it will start seeing increased resistance as is normal of any liquid flowing in any tube, thus it'll start...

Forum: Renovations & New Construction

10-10-12, 01:36 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Yes, it will flow down the path of least...

Yes, it will flow down the path of least resistance. The path of least resistance is a balanced flow between the parallel lines. Each line has the same pressure loss across it if analzed...

Forum: Renovations & New Construction

10-10-12, 08:40 AM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Why are assuming that the branches aren't all the...

Why are assuming that the branches aren't all the same length? I would think that it wouldn't be very difficult at all to design the system to have equal length parallel lines.

Why do you say...

Forum: Renovations & New Construction

10-09-12, 04:18 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

I was definitely wrong with my initial...

I was definitely wrong with my initial calculations! I have since revised them. I've come up with an additional 2.3 inches of water for a total of about 2.9 inches of water.

I must say I do not...

Forum: Renovations & New Construction

10-09-12, 03:10 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

A quick google search came up with this chart: ...

A quick google search came up with this chart:

from this PDF (http://www.kvcindustries.com/products/valves/technicaldata/PEX%20Piping%20System%20Instructions.pdf)
...

Forum: Renovations & New Construction

10-09-12, 02:51 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Welcome to the site mephistopheles! ...

Welcome to the site mephistopheles!

Excellent point. The tees will definitely cause a restriction. I had not thought of that. I would imagine we'd still be well under the 6.62 inches of water...

Forum: Renovations & New Construction

10-09-12, 12:07 PM

Replies: 50

Low head loss hydronic floor heating

Views: 51,860

Posted By Daox

Low head loss hydronic floor heating

We have an excellent thread on DIY hydronic floor heating (http://ecorenovator.org/forum/renovations-new-construction/728-diy-hydronic-floor-heating.html) here. Admittedly I haven't read all of it,...

Showing results 1 to 19 of 19

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