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Search: Posts Made By: Piwoslaw
Forum: Conservation 04-03-21, 02:42 PM
Replies: 8
Views: 1,221
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: 1,745
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: 8
Views: 1,221
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: 8
Views: 1,221
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: 8
Views: 1,221
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: 7
Views: 2,819
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: 1,630
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: 1,822
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: 2,034
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: 1,242
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: 569
Views: 668,008
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: 7
Views: 2,819
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: 11,501
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: 8
Views: 4,544
Posted By Piwoslaw
Training and Quality Manager

Training and Quality Manager
Forum: Conservation 12-30-18, 06:58 AM
Replies: 6
Views: 2,413
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: 2,402
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: 11,501
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: 1,745
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: 2,701
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: 1,825
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: 5,701
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...
Forum: Geothermal & Heat Pumps 01-29-18, 02:15 PM
Replies: 14
Views: 5,701
Posted By Piwoslaw
Hi ThMihov, welcome to ER:) I envy how far...

Hi ThMihov, welcome to ER:)

I envy how far you've gotten with this project:cool: I can't wait to see the results!

I see that what you have made is a small heat buffer. I'm not sure of the...
Forum: Geothermal & Heat Pumps 01-06-18, 12:42 AM
Replies: 5
Views: 1,994
Posted By Piwoslaw
Great idea! I have thought about ways of...

Great idea! I have thought about ways of utilizing heat from cooling PVs, and of using solar to preheat intake air for a heat pump, but this merges both:)

Everything looks great, only one thing...
Forum: Appliances & Gadgets 11-21-17, 02:07 PM
Replies: 14
Views: 4,638
Posted By Piwoslaw
After ~2days I've noticed that in the evening,...

After ~2days I've noticed that in the evening, about 1-1.5 hours before powering on again, the temperature in the top of the chest is around -7C. This is a bit warm, so I've extended the on-time from...
Forum: Appliances & Gadgets 11-19-17, 02:31 PM
Replies: 14
Views: 4,638
Posted By Piwoslaw
This project has been creeping along very slowly....

This project has been creeping along very slowly. Mostly because we don't have enough food to fill the 160 liter freezer, but we finally turned it on and moved what we had, so that the freezer part...
Showing results 1 to 25 of 500

 
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