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Search: Posts Made By: Piwoslaw
Forum: Other Improvements 05-09-22, 01:51 PM
Replies: 0
Views: 330
Posted By Piwoslaw
Screen door - need advice

A long time ago I made screens to put on the windows during mosquito season, now I would like to make a screen for the balcony door also.

The frames of the window screens are just simple...
Forum: Energy Storage 04-27-22, 02:46 PM
Replies: 22
Views: 19,939
Posted By Piwoslaw
Update. I read about heat traps and concocted...

Update.
I read about heat traps and concocted something like this:
https://ecorenovator.org/forum/attachment.php?attachmentid=9453&stc=1&d=1651087611
The heat trap goes up ~35cm, then down ~20cm,...
Forum: Energy Storage 03-14-22, 03:21 PM
Replies: 22
Views: 19,939
Posted By Piwoslaw
I had a spring-loaded check valve in my spare...

I had a spring-loaded check valve in my spare parts, so I installed it today.
And you were right: The spring is too much for the circulation pump. Even on the highest of the 3 speeds it made strange...
Forum: Energy Storage 03-13-22, 03:54 PM
Replies: 6
Views: 864
Posted By Piwoslaw
DIY Powerwall

The wife recently came across some blog with people who use huge banks of old 18650 batteries (hundreds or thousands) from old equipment and appliances for energy storage, like a DIY Tesla Powerwall,...
Forum: Lawn and Garden 03-10-22, 11:34 PM
Replies: 7
Views: 851
Posted By Piwoslaw
I have seen a few threads here on electric...

I have seen a few threads here on electric tractors, or converting to EV.
A quick search brought these 2 up, but there is more:
Electric Garden Tractor...
Forum: Energy Storage 03-10-22, 03:03 PM
Replies: 22
Views: 19,939
Posted By Piwoslaw
So, I bought a used heat buffer. It is 160cm...

So, I bought a used heat buffer.
It is 160cm tall and 60cm diameter, giving roughly 500 liters, of which 120 liters is an internal metal tank for domestic hot water. I searched for a plumber who...
Forum: Geothermal & Heat Pumps 03-06-22, 02:53 PM
Replies: 11
Views: 1,345
Posted By Piwoslaw
I think the main thing you are missing to a heat...

I think the main thing you are missing to a heat pump, and its efficiency, is that you are only compressing/decompressing, but there is no phase change. It is the evaporation/condensing which allows...
Forum: Wind Power 03-02-22, 12:35 PM
Replies: 7
Views: 1,194
Posted By Piwoslaw
Wind turbines with a verticle axis can take...

Wind turbines with a verticle axis can take advantage of wind which rapidly changes direction.

Here is one of many innovative designs:
New type of VAWT...
Forum: Energy Storage 02-02-22, 12:09 PM
Replies: 18
Views: 7,675
Posted By Piwoslaw
Looking at the project with cranes and concrete...

Looking at the project with cranes and concrete blocks got me thinking about... cranes. The ones in ports and other transfer depots. Real, working cranes, which to not lift thousands of tons to great...
Forum: Energy Storage 02-02-22, 11:02 AM
Replies: 7
Views: 4,038
Posted By Piwoslaw
Update - I bought a small inverter as a backup in...

Update - I bought a small inverter as a backup in case of blackouts.

I checked that the battery is still in good enough shape to power the refridgerator or heating system's pump and electronics...
Forum: The Billiards Room 11-06-21, 03:55 PM
Replies: 3
Views: 2,982
Posted By Piwoslaw
Bumping this thread for others to see. This...

Bumping this thread for others to see.

This is an interesting strategy game, especially that you prognose the needs, differ wind production each day, etc., so you need to plan production. Like a...
Forum: Solar Heating 10-08-21, 03:18 PM
Replies: 5
Views: 1,725
Posted By Piwoslaw
Hi Sparky! Sounds like a great plan! ...

Hi Sparky!

Sounds like a great plan!

Storing heat/energy is important, and using phase changing materials will increase the storage capacity.

Some links in this board to check out:
Heat...
Forum: Forum News & Feedback 09-19-21, 10:12 AM
Replies: 3
Views: 2,496
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: 14
Views: 6,612
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: 6,383
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: 5,229
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: 5,229
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: Energy Storage 02-07-21, 02:40 PM
Replies: 3
Views: 4,914
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: 5,229
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: 5,229
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: 5,229
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: 14
Views: 6,612
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: 3,166
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: 3,442
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: 3,381
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]
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