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Search: Posts Made By: Piwoslaw
Forum: Forum News & Feedback Yesterday, 10:12 AM
Replies: 0
Views: 45
Posted By Piwoslaw
[Poll] New SubForum - Energy Storage

EcoRenovator has subforums for a number of topics - from Heat Pumps, through Solar and Wind, to Conservation and even Gardening. A topic becoming increasingly popular in discussion about energy...
Forum: Solar Power 08-04-21, 01:45 PM
Replies: 12
Views: 3,788
Posted By Piwoslaw
What about mounting the mirrors above the solar...

What about mounting the mirrors above the solar panels, facing down?
In such a way/angle that:
- when the sun is low in the winter, it hits the underside and reflects to the panels,
- when the...
Forum: EcoRenovator Blog Discussion 07-31-21, 10:42 AM
Replies: 13
Views: 3,552
Posted By Piwoslaw
When I read/hear that "PV is now very cheap", I...

When I read/hear that "PV is now very cheap", I remember something I read recently, related to the boom on PV in Europe and the rest of the world. It stated that among the reasons for the fall in PV...
Forum: Conservation 06-12-21, 11:24 AM
Replies: 10
Views: 2,395
Posted By Piwoslaw
Update on the first-flush system. The dead-end...

Update on the first-flush system.
The dead-end pipe which serves as a reservoir for the sediments, is 1 meter long. The force/weight of 1 meter of water is enough to push the segments of that pipe...
Forum: Conservation 04-03-21, 02:42 PM
Replies: 10
Views: 2,395
Posted By Piwoslaw
Finally added some kinks to the gutter downpipe,...

Finally added some kinks to the gutter downpipe, which might qualify for a first-flush system:
https://ecorenovator.org/forum/attachment.php?attachmentid=9273&stc=1&d=1617477658

The system will...
Forum: Conservation 02-07-21, 02:40 PM
Replies: 3
Views: 3,141
Posted By Piwoslaw
I found the below article in PV Magazine which...

I found the below article in PV Magazine which claims that the cost of industrial scale RFBs could now be $66/kWh, and could go as low as $54/kWh.
Redox flow batteries for $66/kWh from steel...
Forum: Conservation 02-07-21, 02:27 PM
Replies: 10
Views: 2,395
Posted By Piwoslaw
Yes, I want to add a first flush system on the...

Yes, I want to add a first flush system on the downpipes. No problem if I have to open the system once a month to clean out the sand and grit, but what worries me is winter. Especially that the...
Forum: Conservation 01-21-21, 02:27 PM
Replies: 10
Views: 2,395
Posted By Piwoslaw
Not really that large! During summer heat waves...

Not really that large! During summer heat waves and droughts, watering the lawn can easily use more than 600 liters per day. And last summer the tank did indeed go dry, so we had to use city water...
Forum: Conservation 01-02-21, 03:38 PM
Replies: 10
Views: 2,395
Posted By Piwoslaw
Piwoslaw's rain water system (underground tank)

Since April '20 we finally have a new rainwater system, much more permanent than the plastic barrels (https://ecorenovator.org/forum/showthread.php?t=1009) we've had for the last decade:)

We had a...
Forum: Solar Power 01-02-21, 12:23 PM
Replies: 12
Views: 3,788
Posted By Piwoslaw
I've been thinking about this: The main problem...

I've been thinking about this: The main problem with increasing PV output with mirrors is the penalty of additional heat.
I'm no expert, but PVs only convert certain wavelengths of light into...
Forum: Solar Power 07-05-20, 02:48 PM
Replies: 3
Views: 2,203
Posted By Piwoslaw
Piwoslaw's 2.7kW PV system

After years of thinking, reading, wanting, etc., we finally made the move!
Polish government created a financial incentive for PV systems, where homeowners can get up to 5000PLN (over 1100EUR) back...
Forum: Solar Power 07-05-20, 01:42 PM
Replies: 2
Views: 2,390
Posted By Piwoslaw
I would also like to know how this is better...

I would also like to know how this is better (more cost and/or energy efficient) than independently placing the wind turbine in a windy spot, and the PVs, all facing the same direction, in a place...
Forum: Tools 02-28-20, 01:51 PM
Replies: 4
Views: 2,455
Posted By Piwoslaw
I do not agree! It looks really good, if you know...

I do not agree! It looks really good, if you know what to look at.
[envy]
Forum: Geothermal & Heat Pumps 02-01-20, 02:38 PM
Replies: 0
Views: 1,496
Posted By Piwoslaw
Thermoacoustic Heat Pump

Has anyone heard of and/or had experience with thermoacoustic heat engines/pumps?

There is a local producer here, claiming his "sonic heaters" are the furnaces of the future, most efficient, etc....
Forum: Conservation 03-20-19, 02:24 PM
Replies: 574
Views: 700,275
Posted By Piwoslaw
The filters and/or ventilation motors may get...

The filters and/or ventilation motors may get wet.
Excessive moisture may lead to mold.
Enough water can start to clog some of the passages, both reducing efficiency and increasing risk of mold....
Forum: Solar Power 02-22-19, 02:08 PM
Replies: 12
Views: 3,788
Posted By Piwoslaw
You should be careful with mirrors - they can...

You should be careful with mirrors - they can easily "fry" your panels.
PV efficiency lowers with temperature, while solar hot water may boil in the panels if the mirrors add energy faster than the...
Forum: Appliances & Gadgets 01-11-19, 02:26 PM
Replies: 29
Views: 12,768
Posted By Piwoslaw
Nice reduction! Would you have any pictures?

Nice reduction!

Would you have any pictures?
Forum: The Billiards Room 01-07-19, 02:02 PM
Replies: 9
Views: 5,412
Posted By Piwoslaw
Training and Quality Manager

Training and Quality Manager
Forum: Conservation 12-30-18, 06:58 AM
Replies: 6
Views: 2,737
Posted By Piwoslaw
What to do with a lead-acid car battery?

I recently bought a new car, but it came with a cheap, undersized battery. For the engine Start-Stop function to work, I had to get a larger AGM battery. Now I have the old one as a spare.

What...
Forum: Appliances & Gadgets 08-08-18, 02:24 PM
Replies: 8
Views: 2,749
Posted By Piwoslaw
How about if you get a small heat pump for the...

How about if you get a small heat pump for the central air, to only slightly dehumidify and/or cool the whole house, then use the window unit when needed (=less often)? Make it low power with a large...
Forum: Appliances & Gadgets 06-10-18, 01:41 PM
Replies: 29
Views: 12,768
Posted By Piwoslaw
I once thought about using a small fan to blow...

I once thought about using a small fan to blow air over the coils and/or compressor, but I guess the improved efficiency would hardly outweigh the fan's power consumption.
Forum: Conservation 05-20-18, 02:55 PM
Replies: 3
Views: 3,141
Posted By Piwoslaw
(Redox) Flow Battery

I just found out about a method for storing energy - the (Redox) Flow Battery or RFB.

In short - It is a battery which stores the energy in separate electrolyte tanks, instead of all together in...
Forum: Other Improvements 04-27-18, 02:41 PM
Replies: 2
Views: 3,012
Posted By Piwoslaw
Insulate the car's/RV's floor, ceiling and sides....

Insulate the car's/RV's floor, ceiling and sides. Less heat loss will stretch your heat storage. I'm assuming that you already have warm clothes and warm sleeping bag in use?
Forum: Lawn and Garden 02-25-18, 12:00 PM
Replies: 1
Views: 2,091
Posted By Piwoslaw
Rainwater storage in multiple underground tanks

I am closer to finally moving storage of rainwater from barrels to underground. This will allow me to store more of it (I have 6x 220-liter barrels now), year round, and hook it up to the house's...
Forum: Geothermal & Heat Pumps 01-30-18, 03:00 PM
Replies: 14
Views: 6,449
Posted By Piwoslaw
Amazing. I mean - the math:thumbup: I like the...

Amazing. I mean - the math:thumbup: I like the depth that you are going into (I can see myself doing it exactly the same way).

The COP=2 looks OK, in the sense that 3.6 from the specs is probably...
Showing results 1 to 25 of 500

 
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