Welcome to the Solar Collector
Brainstorming and Development Page!


 

Home

Hot Air Collector

Hot Water Project 1

Hot Water & Space Heating

Solar Electric

Solar Construction 101

FAQs

Best Collectors

Simply Solar
Register Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 1 of 3      1   2   3   Next
gregkn73

Registered:
Posts: 24
Reply with quote  #1 
Hi all,

I have a small greenhouse, and always didn't like the waste of excessive heat, even deep in the winter. So I like a lot the shcs idea , where excessive heat is stored into the soil, so you can use it during the night. But to much digging is involved and enough money that I would like to avoid spenting for the drain pipes and fan. Then I liked more when I red, the idea of using car radiator s for capture the excessive day heat and store in a water tank. I can dig the central pathway, insulate it, line a EPDM liner, and cover it with wood slats.no useful space lost, Fewer digging,use already existing materials ( EPDM liner and old car radiator) and I thing water is much better thermal mass than soil!

My only question is, why I can see a lot of shcs applications and very few car radiator+ water storage applications? Am I missing something?

Greg

SolarInterested

Avatar / Picture

Spam Stomper
Registered:
Posts: 987
Reply with quote  #2 
SHCS?
__________________
Both temperature rise and airflow are integral to comparing hot air collectors
stmbtwle

Avatar / Picture

Registered:
Posts: 2,359
Reply with quote  #3 
Greg the car radiator is the central ingredient to the ARETHA hot water collector. Why no one but me seems interested in them I don't know, but they easy to build and they DO work. I've gotten water temperatures of 160F.

https://simplysolar.supporttopics.com/post/aretha-project-hot-air-collector-with-car-radiator-6882647?highlight=aretha&trail=10

https://www.facebook.com/Aretha-Project-307885346030194/?ref=ts&fref=ts&__nodl

Like any hot water system, the storage is the expensive part.


__________________
Willie, Tampa Bay
gregkn73

Registered:
Posts: 24
Reply with quote  #4 
Quote:
Originally Posted by SolarInterested
SHCS?
Subterranean Heating Cooling System
gregkn73

Registered:
Posts: 24
Reply with quote  #5 
Quote:
Originally Posted by stmbtwle
Greg the car radiator is the central ingredient to the ARETHA hot water collector. Why no one but me seems interested in them I don't know, but they easy to build and they DO work. I've gotten water temperatures of 160F.

https://simplysolar.supporttopics.com/post/aretha-project-hot-air-collector-with-car-radiator-6882647?highlight=aretha&trail=10

https://www.facebook.com/Aretha-Project-307885346030194/?ref=ts&fref=ts&__nodl

Like any hot water system, the storage is the expensive part.



I have red already your experimentation with car radiators, and also the great results from built it solar, russel and one from Australia have got with car radiators .

In my case water storage will be nearly free :-) my greenhouse is 6m*2m, and instead of digging 6*2*1 for shcs, I will dig a central trench 6*0.5*0.5, insulate sides and bottom with foam boards, and line it with EPDM , which already have got it. So i will pay only for the foam boards and some wood slats to cover it and walk over it. It seems to good , but not many people implement such an idea, instead shcs has got many more followers! So I can not understand why?
SolarInterested

Avatar / Picture

Spam Stomper
Registered:
Posts: 987
Reply with quote  #6 
IIRC there's an advantage in heating the soil in terms of better plant growth. That's why plant heating mats are popular.

Also, you're making good use of unused space but if more space was required what would the options be for water storage?

Looking forward to seeing your project.


__________________
Both temperature rise and airflow are integral to comparing hot air collectors
gregkn73

Registered:
Posts: 24
Reply with quote  #7 
Quote:
Originally Posted by SolarInterested
IIRC there's an advantage in heating the soil in terms of better plant growth. That's why plant heating mats are popular.

Also, you're making good use of unused space but if more space was required what would the options be for water storage?

Looking forward to seeing your project.



I will also intend to heat the soil! During the night I will use another small pump, to circulate the water, through PEX tubing burried 5cm deep near the plants roots. Also as far the plants are small-sort, I will use small hoops above them- already have them-, so not to heat the whole greenhouse during the night.
stmbtwle

Avatar / Picture

Registered:
Posts: 2,359
Reply with quote  #8 
Not sure why you'd have hoops ABOVE the plants.  Warm air rises, so it would rise away from the plant and possibly draw in cooler surrounding air.  I think if the hoop was at ground level (not covered) the warm air would rise up to surround the plant.
__________________
Willie, Tampa Bay
gregkn73

Registered:
Posts: 24
Reply with quote  #9 
Sorry but I can not understand what you mean. What I describe as small hoops into the greenhouse, is something like this,trap the heat near the plants, while they are small. Why do you thing , it won't work?

Attached Images
jpeg Cloche-hoops-inside-a-Polytunnel.jpg (397.30 KB, 20 views)

stmbtwle

Avatar / Picture

Registered:
Posts: 2,359
Reply with quote  #10 
Sorry, I thought you were talking of HEATING hoops of pex above the plants.

I think what you have in the picture would work fine.

__________________
Willie, Tampa Bay
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

 

web statistics