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Search: Posts Made By: SDMCF
Forum: Geothermal & Heat Pumps 05-24-19, 04:31 AM
Replies: 2
Views: 439
Posted By SDMCF
I had a similar idea for keeping our front steps...

I had a similar idea for keeping our front steps free from ice. This is a much smaller area than you are planning but even so I could not make it work. My idea was to pump water heated by our solar...
Forum: Solar Heating 08-28-16, 11:27 PM
Replies: 6
Views: 1,721
Posted By SDMCF
Some good advice from stevehull, but there is one...

Some good advice from stevehull, but there is one thing I would question. He says:



Maybe the cloud cover here is different from Steve's, but I don't find that. I have 100 evacuated tubes and...
Forum: Conservation 08-01-16, 02:00 AM
Replies: 8
Views: 1,864
Posted By SDMCF
Depends on your local tariffs I guess. For me the...

Depends on your local tariffs I guess. For me the cost varies hour-by-hour with no pre-set low rate and peak rate. The highest peak I have seen is almost 100 times the lowest rate, but that is...
Forum: Other Improvements 03-09-16, 03:08 PM
Replies: 17
Views: 3,494
Posted By SDMCF
You are correct that the CFM of the fans is...

You are correct that the CFM of the fans is important information but unfortunately I see no easy way to determine that. Any ideas?

My test room had an area of about 25 sq m (270 sq ft).

You...
Forum: Geothermal & Heat Pumps 02-25-16, 01:50 AM
Replies: 1,940
Views: 1,396,623
Posted By SDMCF
That's interesting information. FWIW The...

That's interesting information. FWIW The refrigerant in my system is R407C. I have no idea whether that is in any way better or worse.

I may have given the wrong idea when I said that my system...
Forum: Geothermal & Heat Pumps 02-23-16, 12:27 AM
Replies: 1,940
Views: 1,396,623
Posted By SDMCF
I nearly spat out my coffee! That did make me...

I nearly spat out my coffee! That did make me laugh.
You may be correct that more modern technology is normal here compared to North America, but if you saw my house you would understand why that...
Forum: Geothermal & Heat Pumps 02-22-16, 12:35 AM
Replies: 1,940
Views: 1,396,623
Posted By SDMCF
Is that normal in your area? It seems very deep...

Is that normal in your area? It seems very deep to me. Folks in my area seem to think it is counter-productive to go too deep. I believe the thinking is that the ground temperature lower down won't...
Forum: Geothermal & Heat Pumps 02-22-16, 12:29 AM
Replies: 1,940
Views: 1,396,623
Posted By SDMCF
and That's a reasonable rule of thumb but as...

and

That's a reasonable rule of thumb but as always "it depends". I just installed a GSHP and connected it into my existing heating system (radiators). I didn't change anything inside the house...
Forum: Geothermal & Heat Pumps 02-17-16, 12:45 AM
Replies: 20
Views: 3,589
Posted By SDMCF
Are you considering an air source or ground...

Are you considering an air source or ground source heat pump?

I have a NIBE GSHP. The pipe coming into the house from the underground loop passes along the outside of a basement cool room / cold...
Forum: Lawn and Garden 02-15-16, 04:35 PM
Replies: 853
Views: 117,748
Posted By SDMCF
Yes. In most solar applications it is important...

Yes.
In most solar applications it is important to consider the consequence of stagnation if the pump fails on a hot day, and PEX might conceivably have problems there. I don't think that is...
Forum: Lawn and Garden 02-14-16, 11:42 PM
Replies: 853
Views: 117,748
Posted By SDMCF
I have been experimenting with moving hot air...

I have been experimenting with moving hot air (http://ecorenovator.org/forum/other-improvements/4699-vertical-hot-air-tube.html) from ceiling down into a room. I found it is better to have the fan at...
Forum: Lawn and Garden 02-12-16, 12:24 AM
Replies: 853
Views: 117,748
Posted By SDMCF
Should work well and I'm not convinced that the...

Should work well and I'm not convinced that the fan will be needed.

Will you mount the rad horizontally or vertically? I suggest you mount it almost horizontally - but with enough slope that you...
Forum: Other Improvements 02-11-16, 12:05 AM
Replies: 17
Views: 3,494
Posted By SDMCF
MEMPHIS91, That looks really good, and a whole...

MEMPHIS91, That looks really good, and a whole lot better than the temporary lash-up I used for my test. I look forward to your longer term impressions.

Would a thermal shot from further away,...
Forum: Other Improvements 02-10-16, 07:56 AM
Replies: 17
Views: 3,494
Posted By SDMCF
Yes, do let us know the results! I have just...

Yes, do let us know the results!

I have just had another thought about my results. What I am trying to do is to reduce (ideally eliminate) the temperature difference between floor and ceiling, so...
Forum: Other Improvements 02-10-16, 05:20 AM
Replies: 17
Views: 3,494
Posted By SDMCF
@MEMPHIS91: You are right, this arrangement...

@MEMPHIS91: You are right, this arrangement probably doesn't move a great deal of air although I have no way of measuring how much air it does move. A ceiling fan should move a lot more. The...
Forum: Other Improvements 02-09-16, 03:29 AM
Replies: 17
Views: 3,494
Posted By SDMCF
Vertical hot air tube

We all know that the air near the ceiling in a room is warmer than the air near the floor and that blowing the warmer air downwards should make the room feel warmer at "people level". That could be...
Forum: Geothermal & Heat Pumps 01-21-16, 02:55 AM
Replies: 1,940
Views: 1,396,623
Posted By SDMCF
That heating and cooling degree days link is...

That heating and cooling degree days link is really useful. What base temperatures are typically used with that data? (For both heating and cooling).
Forum: Solar Heating 01-16-16, 01:31 PM
Replies: 16
Views: 5,754
Posted By SDMCF
I hope (and believe) you are right pletby. I have...

I hope (and believe) you are right pletby. I have drained the system completely and re-filled using fresh anti-freeze. All seems OK.

This has got me thinking though. What about the anti-freeze in...
Forum: Solar Heating 01-11-16, 01:22 PM
Replies: 16
Views: 5,754
Posted By SDMCF
I have never replaced the anti-freeze as such. On...

I have never replaced the anti-freeze as such. On occasion I have changed the plumbing around a bit and have topped it up then, but I have no good measure of its strength. All a bit disorganized...
Forum: Solar Heating 01-11-16, 01:28 AM
Replies: 16
Views: 5,754
Posted By SDMCF
Let me add my 2 cents to this topic, since my...

Let me add my 2 cents to this topic, since my system is similar but different. Similar in that I have both solar and GSHP and I use the solar for both space heating and hot water. Different in that...
Forum: Lawn and Garden 01-04-16, 02:27 AM
Replies: 853
Views: 117,748
Posted By SDMCF
What is the reasoning behind having the vents at...

What is the reasoning behind having the vents at the bottom rather than at the top? I have similar auto vents in my ("normal") greenhouse but they open windows in the roof. They can be open for many...
Forum: Lawn and Garden 12-07-15, 01:38 PM
Replies: 853
Views: 117,748
Posted By SDMCF
I have similar vents on my (boring, conventional)...

I have similar vents on my (boring, conventional) greenhouse. I bought the greenhouse secondhand and it came with those vents. I installed the greenhouse too late in the season to make use of it this...
Forum: Solar Power 12-07-15, 01:34 PM
Replies: 61
Views: 7,334
Posted By SDMCF
Thanks for your comments. I have no experience...

Thanks for your comments.
I have no experience of PV so I am basing my expectation on my experience with evacuated tubes for water/space heating. I have 100 tubes which produce about 7000 kWh per...
Forum: Solar Power 12-04-15, 01:51 AM
Replies: 61
Views: 7,334
Posted By SDMCF
I recently had to use my back-up plan for real...

I recently had to use my back-up plan for real when we had a power outage for 40 hours. My plan failed completely as the oil burner failed to start. The only heat source we had was the wood burner in...
Forum: Geothermal & Heat Pumps 11-16-15, 11:56 PM
Replies: 28
Views: 6,561
Posted By SDMCF
Could you link to an example please?

Could you link to an example please?
Showing results 1 to 25 of 109

 
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