EcoRenovator  

Go Back   EcoRenovator > Search Forums
Advanced Search
 


Blog 60+ Home Energy Saving Tips Recent Posts Search Today's Posts Mark Forums Read


Showing results 1 to 25 of 48
Search took 0.01 seconds.
Search: Posts Made By: Mikesolar
Forum: Renovations & New Construction 02-25-16, 07:32 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
I don't want to sound too critical but I have to...

I don't want to sound too critical but I have to put my 2 cents in. I'm doing a few passive houses at the moment with heat pumps and it gets quite tough to make a good heating system with a heat load...
Forum: Renovations & New Construction 04-01-15, 05:10 AM
Replies: 588
Views: 502,420
Posted By Mikesolar
UMMM, Barry, the way you describe it, is the way...

UMMM, Barry, the way you describe it, is the way is was here 20 years ago. If you read all the posts i have written, everything you have said is because good professionals were not consulted. Yes...
Forum: Renovations & New Construction 03-15-15, 04:58 AM
Replies: 588
Views: 502,420
Posted By Mikesolar
Reduce your manifold down to 3/4" and get a 3/4"...

Reduce your manifold down to 3/4" and get a 3/4" pump. 1" pipe and fittings are usually double the cost of 3/4" and for your flow rate, 3/4 is needed.
Forum: Renovations & New Construction 03-14-15, 08:42 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
You will cause a problem with 1" piping all over...

You will cause a problem with 1" piping all over and such a small necessary flow rate. The pump will not run in its "safe" part of the pump curve. Piping needs to be sized properly, both for proper...
Forum: Renovations & New Construction 03-14-15, 05:42 AM
Replies: 588
Views: 502,420
Posted By Mikesolar
The manifolds are 1" for manufacturing reasons...

The manifolds are 1" for manufacturing reasons and for flow reasons. You cannot get equal pressure on all 1/2" spigots if you had, for example, a 1/2" header. The pressure drop would be so much that...
Forum: Renovations & New Construction 03-06-15, 05:59 AM
Replies: 588
Views: 502,420
Posted By Mikesolar
Sorry if you have posted the rough heat loss as I...

Sorry if you have posted the rough heat loss as I don't remember it but for 400ft2, the WORST it could ever be (and I mean really crappy insulation) is 50 btu/ft2 or 20mbtu which is 2gpm at a 20F dT...
Forum: Renovations & New Construction 03-05-15, 05:02 AM
Replies: 588
Views: 502,420
Posted By Mikesolar
Do you have a pic of the manifold you want to...

Do you have a pic of the manifold you want to use? Most of the ones for resi use are 1" header with 1/2" spigots for the pex. Commercial ones which can be up to 30 loops, can have 1.25" headers and...
Forum: Renovations & New Construction 02-26-15, 05:25 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
As for control of the slab, I would just use a...

As for control of the slab, I would just use a slab sensor in a neutral area to trigger the heat source. Don't worry about night setbacks or fancy controls. Have lots of pumpkin or apple pie for...
Forum: Renovations & New Construction 02-23-15, 04:44 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
Haha, I like some of the home designs he has done...

Haha, I like some of the home designs he has done but "she who must be obeyed" wants victorian........bummer.
Forum: Renovations & New Construction 02-23-15, 04:40 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
AC, that is a good paper. I may have overlooked...

AC, that is a good paper. I may have overlooked something in your comments to misconstrue your points. Regardless, if you look back through any posting I have made, I have stated over and over that...
Forum: Renovations & New Construction 02-20-15, 08:27 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
AC, It is all great to understand how turbulent...

AC, It is all great to understand how turbulent and laminar flow affects heat transfer but there is something you forgot to mention. If you increase the diameter, your flow will become more laminar...
Forum: Renovations & New Construction 02-20-15, 08:18 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
20+ years ago I built a house for my mom with...

20+ years ago I built a house for my mom with 2x12 plates and offset studs, filled with cellulose. It is a 2 two storey place with 2 bdrms, bath and office on the 2nd floor.......and no heat. The...
Forum: Renovations & New Construction 02-20-15, 08:11 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
But the question is......do you need it? A...

But the question is......do you need it? A typical 1/2" tube on 8" spacing with 110F water can give 50 btu/ft2. I'll bet Drakes home won't need more than 10-15btu max. There is no need to try to get...
Forum: Renovations & New Construction 02-19-15, 06:54 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
Drake, the reason 1/2" tubing is used is because...

Drake, the reason 1/2" tubing is used is because it is the closest size to the 16mm tubing used Europe. Full stop. When I started radiant, all that was available was metric tubing (16mm OD) and when...
Forum: Renovations & New Construction 02-19-15, 05:07 AM
Replies: 588
Views: 502,420
Posted By Mikesolar
Ahhh, there is not a proportional reduction in...

Ahhh, there is not a proportional reduction in head loss, nor a proportional increase in heat transfer capacity over a 1/2' tube.
The heat transfer is all about wall surface area (and turbulence)...
Forum: Renovations & New Construction 02-18-15, 06:38 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
5/8" tubing is fine but only if it is free and...

5/8" tubing is fine but only if it is free and then you can do 2 loops as you were planning before. Is it 5/8" "nominal" or real 5/8" OD? If it is 1/2" nominal it is .625OD.

I prefer the ring...
Forum: Renovations & New Construction 02-17-15, 04:17 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
Totally agree with what BBP said, + if the slab...

Totally agree with what BBP said, + if the slab is 4" thick you can do 12 centers but 8" is more efficient. Any over pour (1.5" gypcrete, for example) should be MAX 9" spacing, 6" is better....
Forum: Renovations & New Construction 02-14-15, 05:45 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
Excellent. That would be the next thing I would...

Excellent. That would be the next thing I would have suggested.
Forum: Renovations & New Construction 02-14-15, 03:54 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
OK, here is what I would do. First: how many of...

OK, here is what I would do. First: how many of the walls are cold walls? If, for example, you are adding an addition onto the back of a house (sorry if I cannot remember the details of you place,...
Forum: Renovations & New Construction 02-14-15, 02:48 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
The question I have is......why is it so...

The question I have is......why is it so difficult to do it without crossing over? What are the special issues you have? Honestly, it is the first time I've come across it expressed like this and I'd...
Forum: Renovations & New Construction 02-11-15, 06:17 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
I did present one good one. No one coming after...

I did present one good one. No one coming after you will realize that it has been crossed and, because it is very unusual, it could cause issues. Plus, if you look at any manifold, the supply starts...
Forum: Renovations & New Construction 02-09-15, 05:44 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
It shows poor loops planning to have tubes cross....

It shows poor loops planning to have tubes cross. If someone else after comes to service it, after the fact, the crossed tubes would mess up understanding the design. In the 1,000,000+ ft of tubing...
Forum: Renovations & New Construction 09-29-14, 05:38 PM
Replies: 588
Views: 502,420
Posted By Mikesolar
The standard is to put cuts about 1" deep in...

The standard is to put cuts about 1" deep in slabs of 400ft2 or larger. We get a corrugated plastic tube over the pex about 12" long and this bridges the gap. Most of the time we put the breaks under...
Forum: Renovations & New Construction 03-31-14, 05:46 AM
Replies: 588
Views: 502,420
Posted By Mikesolar
AC, gypcrete is 40% less weight than concrete and...

AC, gypcrete is 40% less weight than concrete and 2700lbs is diddly if your joists are not at their limits. Unless you really know that the stones are in a precarious state, I wouldn't worry too...
Forum: Renovations & New Construction 12-18-13, 05:20 AM
Replies: 588
Views: 502,420
Posted By Mikesolar
I think it was me that he referring to.:D

I think it was me that he referring to.:D
Showing results 1 to 25 of 48

 
Forum Jump

All times are GMT -5. The time now is 10:06 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Ad Management by RedTyger
Inactive Reminders By Icora Web Design