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Search: Posts Made By: bernard
Forum: Solar Heating 11-22-15, 04:20 AM
Replies: 21
Views: 13,895
Posted By bernard
Hi Jeff, I agree with the truck comparison. ...

Hi Jeff,

I agree with the truck comparison.
However, my initial question was not related with a specific project, neither I plan to install the swh system.
I just wanted to know in general, how...
Forum: Solar Heating 11-21-15, 03:08 AM
Replies: 21
Views: 13,895
Posted By bernard
Hi Daox, Please take my apology for taking me...

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.
Forum: Solar Heating 11-05-15, 10:25 AM
Replies: 5
Views: 4,798
Posted By bernard
Thank you Daox, As far as I am informed...

Thank you Daox,
As far as I am informed controllers will handle this in two ways: discharge an excess hot water from the storage tank and import a new cold one from the mains water pipe.
And during...
Forum: Solar Heating 11-04-15, 03:25 PM
Replies: 5
Views: 4,798
Posted By bernard
Daily regime of solar controller during vacations

Hello.
I am interested in solar hot water controller's (delta T) regime of work during holidays.

I've read that if holiday lasts up to 3 days, it is recommended to keep the regime the same as on...
Forum: Solar Heating 10-14-15, 11:50 AM
Replies: 19
Views: 12,115
Posted By bernard
Thank you Daox, So 4 kWh in my example...

Thank you Daox,

So 4 kWh in my example (http://ecorenovator.org/forum/47403-post3.html), is in fact a thermal energy, not an electric energy:




And what is 5kWh in my example:
Forum: Solar Heating 10-14-15, 11:28 AM
Replies: 19
Views: 12,115
Posted By bernard
Thank you Daox. So it's 1kw of electric...

Thank you Daox.

So it's 1kw of electric energy equal to 1kW of thermal energy?
"heat" is thermal energy?
Forum: Solar Heating 10-14-15, 08:26 AM
Replies: 19
Views: 12,115
Posted By bernard
Thank you for the reply Jeff. I am actually...

Thank you for the reply Jeff.

I am actually not interested in units other than kWh. I live in a metric country.
The reason why I put gallons and kbTu was as a way of respect, because I can see...
Forum: Solar Heating 10-13-15, 02:07 PM
Replies: 19
Views: 12,115
Posted By bernard
Thank you bmxeroh, I am not interested in...

Thank you bmxeroh,

I am not interested in knowing why do these two values differ, but how they can be compared (without interfering with costs).

Indeed watt is watt.
But upper "4" is 4 kWh of...
Forum: Solar Heating 10-13-15, 08:30 AM
Replies: 19
Views: 12,115
Posted By bernard
Thank you Steve. I am not interested in...

Thank you Steve.

I am not interested in costs.

I simply want to know how can 4 kWh of electric energy be compared with 5 kWh of thermal energy (is this even thermal energy)?

Is the only way...
Forum: Solar Heating 10-13-15, 07:47 AM
Replies: 19
Views: 12,115
Posted By bernard
Thank you for sharing the link Steve. That is a...

Thank you for sharing the link Steve. That is a very interesting page.
But I still do not understand it.

If efficiency (EF) of electricity is 100% (or 1.0), then in order to calculate the amount...
Forum: Solar Heating 10-13-15, 05:31 AM
Replies: 19
Views: 12,115
Posted By bernard
How much energy to heat 100 liters of water?

There is something that has been confusing me for a while, and it is related with "types" of energies when it comes to heating water.

Here is an example:
volume of water to heat: 100 liters (26.4...
Forum: Solar Heating 09-28-15, 05:21 AM
Replies: 21
Views: 13,895
Posted By bernard
Thank you shagarg. Can you tell me what is...

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.
Forum: Solar Heating 09-17-15, 04:19 PM
Replies: 21
Views: 13,895
Posted By bernard
Thank you Steve. How many stories do you...

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...
Forum: Solar Heating 09-17-15, 02:48 PM
Replies: 21
Views: 13,895
Posted By bernard
Hi Steve, I do not mean any disrespect, and I...

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:



Thank you, and apologies for disturbance.
Forum: Solar Heating 09-15-15, 03:10 AM
Replies: 21
Views: 13,895
Posted By bernard
Thank you Steve. I seem to undestood you...

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....
Forum: Solar Heating 09-14-15, 04:55 PM
Replies: 21
Views: 13,895
Posted By bernard
I did not understand you this, I apologize. ...

I did not understand you this, I apologize.

When you said:



the way I have understood you is:
for each story add 5 meters of piping in one direction (from collector to the storage tank), 5...
Forum: Solar Heating 09-14-15, 04:43 PM
Replies: 21
Views: 13,895
Posted By bernard
Thank you Steve. So basically if one has a...

Thank you Steve.

So basically if one has a two story building with basement (basement, ground floor and first floor), where storage tank is located in the basement, collectors are on the roof and...
Forum: Solar Heating 09-14-15, 04:27 PM
Replies: 21
Views: 13,895
Posted By bernard
Thank you Steve. Is there some way of...

Thank you Steve.

Is there some way of knowing how much total pipe run length will one need?
For example, depending on a number of stories, in case the storage tank is located at the lowest story,...
Forum: Solar Heating 09-14-15, 03:47 PM
Replies: 21
Views: 13,895
Posted By bernard
Dear Steve, Thank you for the reply, it has...

Dear Steve,

Thank you for the reply, it has been really informative.
But it seems there is a misunderstanding.

I am interested in the overall length of the pipes, not their diameters, and...
Forum: Solar Heating 09-14-15, 09:03 AM
Replies: 21
Views: 13,895
Posted By bernard
Thank you for the reply Steve. I do not have...

Thank you for the reply Steve.

I do not have a particular swh system in mind.
For example, let's say I have three collectors (each one 20 square feet of area (1.85 square meters)): 3 * 20 = 60 sq...
Forum: Solar Heating 09-14-15, 05:15 AM
Replies: 21
Views: 13,895
Posted By bernard
Overall piping length in swh systems

There is one thing that I am curious of:
What are some rule of a thumb, or approximate overall piping lengths in residential solar water heating systems?

I know it may be difficult to answer this...
Forum: Introductions 09-14-15, 05:15 AM
Replies: 1
Views: 3,014
Posted By bernard
Greetings

Dear Eco renovator community.

My name is Bernard. I am from from Central Europe, and I interested in knowing more about thermal solar systems and PV systems.
My other interests include hiking,...
Showing results 1 to 22 of 22

 
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