![]() |
![]() |
#11 | ||
Lurking Renovator
Join Date: Sep 2015
Location: Hungary
Posts: 22
Thanks: 9
Thanked 0 Times in 0 Posts
|
![]() Quote:
When you said: Quote:
for each story add 5 meters of piping in one direction (from collector to the storage tank), 5 meters in the other (from storage tank to collector) = which is 10 meters overall per story. Did I understand that correctly? Then how come you get approximately 60 meters in your case? You have 6 stories in straight shot, or two stories of complicated piping schedule (not a straight shot)? |
||
![]() |
![]() |
![]() |
#12 |
Steve Hull
Join Date: Dec 2012
Location: hilly, tree covered Arcadia, OK USA
Posts: 826
Thanks: 241
Thanked 165 Times in 123 Posts
|
![]() Let me start again.
Assume it is 10 meters from the lowest level (where the storage tank is perhaps in the basement of the home) all the way up to the roof. This might be two stories total. This is the one way distance. Add a couple meters of pipe to get to the tank and to the collectors. The total one way distance is about 10 meters. This is for just one pipe. The total pipe length (supply and return) would be double this - or about 20 meters (at most for a two story building). It could be a lot less. If the storage tank is in the attic, then the distance from there to the roof might be only a couple meters (one way). Steve
__________________
consulting on geothermal heating/cooling & rational energy use since 1990 |
![]() |
![]() |
The Following User Says Thank You to stevehull For This Useful Post: | bernard (09-15-15) |
![]() |
#13 |
Lurking Renovator
Join Date: Sep 2015
Location: Hungary
Posts: 22
Thanks: 9
Thanked 0 Times in 0 Posts
|
![]() Thank you Steve.
I seem to undestood you correctly previously: Add 5 meters of pipe length per story (for supply) + 5 meters of pipe length per story (for return) = 10 meters total per story. And add 2 to 3 meters for the pipe length on roof (let's say 3meters). So for a two story building with basement (basement, ground floor, first floor, roof), if storage is in the basement, and collectors on the roof, one would have: 3stories (basement counted as a story) * 10 meters + 3 meters (on the roof) = 33 meters. I am wondering, why do you have 60 meters (200 feet), which is almost double than 33 meters? |
![]() |
![]() |
![]() |
#14 | |
Lurking Renovator
Join Date: Sep 2015
Location: Hungary
Posts: 22
Thanks: 9
Thanked 0 Times in 0 Posts
|
![]() Hi Steve,
I do not mean any disrespect, and I am very grateful on the help you have given me so far. Could you please just answer on my last reply: Quote:
|
|
![]() |
![]() |
![]() |
#15 |
Steve Hull
Join Date: Dec 2012
Location: hilly, tree covered Arcadia, OK USA
Posts: 826
Thanks: 241
Thanked 165 Times in 123 Posts
|
![]() It is better to overestimate length than to underestimate it. Perhaps you could get by with a very straight point to point run and go the entire length with only 30 meters. But if you have any right hand 90 degree bends or other restrictions than the pump may not have enough capacity. Generally, I estimate cautiously.
Without seeing the actual site it is impossible to say exactly how much length is needed. But here is a way to do it. Identify the exact route the pipe must take and then measure from there. That said, there may be obstacles in the way, concrete partitions, concrete floors, that are very difficult to drill through, so allowances must be made. I am sorry if this sounds like a very wide guess, but I am not aware of any specific formula. I did get a private message about story height and it varies from country to country and even within cities. For example, in many new constructions there is a false ceiling where all ducts and infrastructure goes - often taking up 6-7 feet (2 meters). And this is on top of each living unit of 3 meters or so in height (9 feet)! The key is to know the total flow, then the height issue (gravity), that allows you to know the pump requirements. Then size the pipe diameter to not introduce turbulence (keep it wide). Hope this helps . . . Steve
__________________
consulting on geothermal heating/cooling & rational energy use since 1990 |
![]() |
![]() |
![]() |
#16 |
Lurking Renovator
Join Date: Sep 2015
Location: Hungary
Posts: 22
Thanks: 9
Thanked 0 Times in 0 Posts
|
![]() Thank you Steve.
How many stories do you have for your total pipe run length of 200 feet? 3 stories with basement included (basement - where the storage tank is, ground floor, first floor, and then goes the roof)? |
![]() |
![]() |
![]() |
#17 |
Lurking Renovator
Join Date: Sep 2015
Location: Hungary
Posts: 22
Thanks: 9
Thanked 0 Times in 0 Posts
|
![]() Thank you shagarg.
Can you tell me what is the total pipe length run in your solar loop? And how many stories do you have? Thank you. |
![]() |
![]() |
![]() |
#18 | |
Supreme EcoRenovator
|
![]() Quote:
Check out this article for more information: Fundamentals in Steamback Design 11/08/2010 - Solar Thermal Manufacturer | Solar Hot Water & Heating Manufacturer ![]() Last edited by jeff5may; 10-20-15 at 09:44 AM.. |
|
![]() |
![]() |
![]() |
#19 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
![]() Bernard, did you ever start on your solar hot water project?
__________________
Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. |
![]() |
![]() |
![]() |
#20 |
Lurking Renovator
Join Date: Sep 2015
Location: Hungary
Posts: 22
Thanks: 9
Thanked 0 Times in 0 Posts
|
![]() Hi Daox,
Please take my apology for taking me too long to reply. I did start. @jeff5may: Thank you for the reply, and link. That is really useful information. |
![]() |
![]() |
![]() |
|
|