Sep
15
comment Do light fixtures with small solar panels require direct sunlight?
This would be better for your purpose. aliexpress.com/item/32985318187.html 18 hours of light after fully charged. On continuously. 4400mAh batteries which are replaceable. 9.8ft cable so you can place the solar panel in direct sunlight.
Sep
13
comment Do light fixtures with small solar panels require direct sunlight?
It looks like this from AliExpress, and you are using it in mode 1. Try pushing the mode button next to the pir sensor to switch to mode 2 to save power. But realistically without direct sunlight you're not going to get a light on all night.
Sep
13
comment Do light fixtures with small solar panels require direct sunlight?
US $14.35 37%OFF | LED Solar Light 36 leds PIR Motion Sensor night light Outdoor Waterproof Garden Street light Security Wall Lamp with mounted rod s.click.aliexpress.com/e/L0zr5WKU
Sep
13
asked Flat panel vs evacuated tube tco
Sep
13
comment Do light fixtures with small solar panels require direct sunlight?
These things often have multiple modes. Can't you switch it turn on only with motion?
Mar
9
awarded  Yearling
2018
Oct
29
comment What are the key principles for designing a rocket stove?
The ratio of feed tube to heat riser should be about 1:3 or 1:4 ie. the heat riser is at least 3x the height of the feed tube. Otherwise the feed tube acts as a competing riser.
Oct
17
comment What are the key principles for designing a rocket stove?
The diagram shows a L tube feed which is confusing if you're calling it a J shaped chimney. The U shape you talk about is called the J tube feed.
Oct
17
comment What sort of pellet mill can be used for biofuels?
Food pellet machines don't use heat to fuse the pellets.
Sep
28
comment I throw compostable food into trash — how much harm do I cause?
Sure, but that also applies to anything that is called carbon neutral eg. Fire wood, pellets etc. That stuff needs to use carbon to prepare it, and transport it to the final point of use. And any food we do consume is turned into CO2 eventually.
Sep
26
comment I throw compostable food into trash — how much harm do I cause?
Surely it depends on what your city does with sewage. Some cities compost it and then sell it back to the citizens.
Sep
26
comment I throw compostable food into trash — how much harm do I cause?
Most food grabs CO2 from the air. If it's converted to methane and then burnt back to CO2, isn't that carbon neutral?
Sep
3
answered What sort of pellet mill can be used for biofuels?
Sep
3
comment What sort of pellet mill can be used for biofuels?
The question supposes you already have a pellet fire.
Aug
7
comment What sort of pellet mill can be used for biofuels?
Coffee grounds for example
Aug
3
comment What sort of pellet mill can be used for biofuels?
Wood pellets are not sustainable the way they are produced in many parts of the world.
Jul
29
asked What sort of pellet mill can be used for biofuels?
Apr
30
comment What are the consequences of wasting water in a water-rich country?
The point of my questions was as @JanDoggen points out is that there is an economic cost of cleaning water. No matter what is done to the water it all ends up in the same place and has to be cleaned to make it drinkable again. The more you waste, and every other person wastes, the more that needs to be cleaned.
Apr
30
comment What are the consequences of wasting water in a water-rich country?
Does the fresh water come from the Danube as well? And do the countries downstream use the same water for drinking?
Apr
29
comment What are the consequences of wasting water in a water-rich country?
What happens to the water quality downstream of the Danube?