Forum: Conservation
01-21-21, 03:27 PM
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Replies: 2
Views: 266
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...
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Forum: Conservation
01-02-21, 04:38 PM
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Replies: 2
Views: 266
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...
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Forum: Solar Power
01-02-21, 01:23 PM
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Replies: 7
Views: 2,045
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Forum: Solar Power
07-05-20, 03:48 PM
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Replies: 3
Views: 1,085
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...
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Forum: Solar Power
07-05-20, 02:42 PM
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Replies: 2
Views: 1,089
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...
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Forum: Tools
02-28-20, 02:51 PM
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Replies: 4
Views: 1,521
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Forum: Geothermal & Heat Pumps
02-01-20, 03:38 PM
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Replies: 0
Views: 1,035
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....
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Forum: Conservation
03-20-19, 03:24 PM
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Replies: 569
Views: 637,293
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....
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Forum: Solar Power
02-22-19, 03:08 PM
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Replies: 7
Views: 2,045
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...
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Forum: Appliances & Gadgets
01-11-19, 03:26 PM
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Replies: 29
Views: 10,277
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Forum: The Billiards Room
01-07-19, 03:02 PM
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Replies: 8
Views: 3,736
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Forum: Conservation
12-30-18, 07:58 AM
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Replies: 6
Views: 2,058
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...
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Forum: Appliances & Gadgets
08-08-18, 03:24 PM
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Replies: 8
Views: 1,969
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...
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Forum: Appliances & Gadgets
06-10-18, 02:41 PM
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Replies: 29
Views: 10,277
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Forum: Conservation
05-20-18, 03:55 PM
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Replies: 1
Views: 1,156
(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...
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Forum: Other Improvements
04-27-18, 03:41 PM
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Replies: 2
Views: 2,340
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Forum: Lawn and Garden
02-25-18, 01:00 PM
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Replies: 1
Views: 1,561
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...
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Forum: Geothermal & Heat Pumps
01-30-18, 04:00 PM
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Replies: 14
Views: 5,083
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...
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Forum: Geothermal & Heat Pumps
01-29-18, 03:15 PM
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Replies: 14
Views: 5,083
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...
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Forum: Geothermal & Heat Pumps
01-06-18, 01:42 AM
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Replies: 5
Views: 1,789
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...
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Forum: Appliances & Gadgets
11-21-17, 03:07 PM
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Replies: 14
Views: 4,084
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...
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Forum: Appliances & Gadgets
11-19-17, 03:31 PM
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Replies: 14
Views: 4,084
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Forum: Appliances & Gadgets
09-13-17, 03:31 PM
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Replies: 14
Views: 4,084
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Forum: Appliances & Gadgets
09-13-17, 02:53 AM
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Replies: 14
Views: 4,084
Thank you all for your feedback:)
I am aware...
Thank you all for your feedback:)
I am aware that the freezer design is already pretty efficient, so I am not expecting 30 or 50% improvement. But even if I get 5-10%, it will still count. My goal...
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Forum: Conservation
08-27-17, 03:46 PM
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Replies: 2
Views: 1,364
If you must move the air through a smaller...
If you must move the air through a smaller diameter tube, because of dimensional constraints, then try to keep the tube as short as possible, or at least keep the bottleneck short. For example, if...
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