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Search: Posts Made By: SDMCF
Forum: Solar Power 11-08-21, 12:30 AM
Replies: 9
Views: 9,702
Posted By SDMCF
https://www.masterelectronics.com/en/nte-electroni...

https://www.masterelectronics.com/en/nte-electronics/mlr335k250-12008307.html?utm_term=MLR335K250&ref=oemstrade&utm_campaign=oemstrade&utm_medium=inventoryrefferal&utm_source=oemstrade ??
Forum: Solar Heating 09-29-21, 12:09 AM
Replies: 8
Views: 18,528
Posted By SDMCF
I use a Resol Deltsol BS Pro. The plus points are...

I use a Resol Deltsol BS Pro. The plus points are that it is easy to use, it has setups to suit a number of equipment configurations, and it has proven reliable. I have been happy with it. The...
Forum: Solar Heating 09-06-21, 12:03 AM
Replies: 4
Views: 8,939
Posted By SDMCF
I don't know about thread specs so I don't know...

I don't know about thread specs so I don't know if the threads we have are NPT or not, but 1/8" sounds small to me. My system uses 22mm copper pipe and my automatic air vent is 3/8" (unknown thread...
Forum: Solar Heating 01-10-21, 02:15 AM
Replies: 14
Views: 18,786
Posted By SDMCF
Does your controller always run the pump at full...

Does your controller always run the pump at full speed? Or does it keep pumping but modify the pump speed based on the delta? Is it capable of changing the pump speed?
Forum: Solar Heating 09-17-20, 01:39 AM
Replies: 16
Views: 19,521
Posted By SDMCF
I assume you mean horizontal - or actually a...

I assume you mean horizontal - or actually a little off horizontal to facilitate drainback. If the manifolds were vertical the tubes would be horizontal and I don't think they would work in that...
Forum: Solar Heating 09-14-20, 03:50 PM
Replies: 16
Views: 19,521
Posted By SDMCF
I have 90 tubes and they perform very well on...

I have 90 tubes and they perform very well on cold days but do not perform at all well on overcast days. The most productive time of year for me is February/March when the temperature can be -30C but...
Forum: Solar Heating 03-03-20, 12:18 AM
Replies: 38
Views: 47,103
Posted By SDMCF
Can you write more about why that layout is a...

Can you write more about why that layout is a good one? Are you primarily aiming to achieve good/best heat transfer?
I have a similar project planned for the summer, but so far my tank layout ideas...
Forum: The Billiards Room 02-11-20, 01:25 AM
Replies: 23
Views: 29,347
Posted By SDMCF
I think the logistics of obtaining a supply of...

I think the logistics of obtaining a supply of fox urine would defeat me.
Forum: Solar Heating 08-28-16, 11:27 PM
Replies: 6
Views: 6,767
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: 6,515
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: Geothermal & Heat Pumps 02-22-16, 12:29 AM
Replies: 1,943
Views: 3,643,529
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: Other Improvements 02-11-16, 12:05 AM
Replies: 17
Views: 12,207
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: 12,207
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 02-09-16, 03:29 AM
Replies: 17
Views: 12,207
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: Solar Heating 01-11-16, 01:28 AM
Replies: 17
Views: 18,909
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: Solar Power 12-04-15, 01:51 AM
Replies: 61
Views: 28,790
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: Appliances & Gadgets 08-25-15, 12:21 AM
Replies: 23
Views: 16,529
Posted By SDMCF
That sounds very like the rationale behind Iron...

That sounds very like the rationale behind Iron (http://www.srware.net/en/software_srware_iron.php) which is the browser I have been using for a while now. Had you considered Iron? If so, why did you...
Forum: Conservation 05-01-15, 08:10 AM
Replies: 35
Views: 20,310
Posted By SDMCF
The little things are so little that I have...

The little things are so little that I have probably forgotten most of them. All I can say is:

Insulation
Changed some bulbs
Insulation
Draught-proofing
Insulation
No longer run a server 24x7...
Forum: Conservation 04-30-15, 06:34 AM
Replies: 35
Views: 20,310
Posted By SDMCF
I can't go back 10 years as I haven't kept the...

I can't go back 10 years as I haven't kept the figures, but I have just been comparing our electricity usage, year-on-year. Giving 2011 (the earliest year for which I have figures) an index of 100...
Forum: Geothermal & Heat Pumps 01-13-15, 10:20 PM
Replies: 18
Views: 9,299
Posted By SDMCF
I have a GSHP and solar thermal but I would not...

I have a GSHP and solar thermal but I would not consider putting solar heat into the ground loop to save electricity in winter. Instead, I use the solar heat to heat my house directly. There is no...
Forum: Solar Power 01-03-15, 05:16 PM
Replies: 61
Views: 28,790
Posted By SDMCF
I considered a pellet burner but decided on a...

I considered a pellet burner but decided on a GSHP. The pellet burner was an attractive option which I eventually rejected because:
a) I wasn't sure how reliable the pellet delivery mechanism would...
Forum: Energy Storage 12-10-14, 11:53 PM
Replies: 53
Views: 39,849
Posted By SDMCF
Yes. I have 4 x 20 tube collectors with twin...

Yes.
I have 4 x 20 tube collectors with twin wall tubes, and 1 x 20 tube collector with single wall, larger diameter, tubes. The larger larger diameter tubes were more expensive. I haven't been able...
Forum: Energy Storage 11-30-14, 01:21 PM
Replies: 53
Views: 39,849
Posted By SDMCF
It seems common to run radiators at 80+C, but I...

It seems common to run radiators at 80+C, but I really don't understand why systems are designed to require that. The temperature at which you run the rads will depend on how well your house is...
Forum: Energy Storage 10-25-14, 03:00 AM
Replies: 5
Views: 8,751
Posted By SDMCF
If you know how much energy it currently takes to...

If you know how much energy it currently takes to cool your house for 12 hours during the day you could calculate the amount of ice you would need. Distributing that "coolth" may be a bigger problem...
Forum: Geothermal & Heat Pumps 10-21-14, 12:25 AM
Replies: 15
Views: 9,728
Posted By SDMCF
That seems a risky strategy to me. What if you...

That seems a risky strategy to me. What if you have a prolonged power outage? What if you have a pump failure (which is bound to happen when you are away, or can't get a replacement quickly)? To me...
Showing results 1 to 25 of 34

 
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