All Questions

3
votes
1answer
15 views

Homemade bonemeal? Is it possible?

Like most people, we eat some meat, and the resulting bones need to be dealt with after the hens have finished cleaning them or they have been used for stock. I have been burying some bones but am ...
1
vote
2answers
30 views

Method of transport with decent speed/low cost without a driving license?

I'm looking for something a little bit better than your average bike in terms of transportation potential, but cannot be a license-required vehicle as I cannot get a driver's license. I also don't ...
1
vote
1answer
9 views

Seaweed snacks without lots of packaging

My kids like seaweed snacks but there’s so much packaging. Alternatively I can buy crackers or raisins in large packages, lowering birth the cost and packaging (plus I’d the package is cardboard it’s ...
3
votes
2answers
33 views

What are examples of perennial crops?

I just read this fascinating article on kernza, an alternative to wheat that is a perennial, rather than annual, crop. From the article, "Can This Breakfast Cereal Help Save The Planet?", this is ...
1
vote
0answers
22 views

Is an air to water heat pump appropriate to keep a hot tub at temperature throughout the year (hot tub to run 24/7)

Is an air to water heat pump appropriate to keep a hot tub at temperature throughout the year (hot tub to run 24/7). Presumably if the efficiency is greater than 1 even at the lowest temperatures (say ...
1
vote
0answers
17 views

What are the dimensions of a cotton plant at it's largest?

I'm experimenting with optimal cotton growing techniques using the least amount of water required and plan on growing a cotton plant in simulated field conditions. That said, I need a large enough ...
6
votes
1answer
51 views

Is electricity used at night more likely to be renewable?

Discussing charging my electric car with a colleague recently I argued that since (in Ireland) our renewable energy sources are mainly wind and hydro, since I charge my car at night the mixture of ...
-2
votes
1answer
39 views

Best sunflower for seeds

For a while now I would like to plant sunflowers in my garden that actually give seeds. After some visits in some department stores and looking online I realized most sunflowers nowadays are for ...
0
votes
1answer
51 views

If I plan to drive on soft ground, what can I do to avoid sinking in?

I'm expecting tons of wood chips to be dropped off in part of my yard every day this year, and am wondering what I need to do so the arborist can easily drop them off as close to where I want them as ...
3
votes
4answers
86 views

Best Uses for Scrap Aluminum

Much to my dismay, my apartment building recently canceled their recycling program. My household generates a fair amount of waste aluminum cans that we were previously sending to the local recycling ...
2
votes
0answers
29 views

Does a solar thermal hot water system make sense for my home?

Currently my house has a natural gas-burning hot water heater, with a 40 gallon (150 liter) tank. Given the vintage, the efficiency of this heater is likely around 80%. A new, drop-in replacement ...
6
votes
0answers
46 views

How do you decontaminate land?

How do you decontaminate land that has been contaminated with various toxic materials? Is it safe to just unearth everything? I live around a lot of contaminated fields and it looks like companies ...
1
vote
2answers
29 views

What are the concrete impact of not recycling textile?

Examples: CO2e emitted, harm to the ecosystem, resources depleted, cost to the economy, etc. Context: I have a piece of clothing that is broken that I want to get rid of, and I want to know if it's ...
-3
votes
0answers
25 views

Can you feed pigs straight wood chips instead of grains on pasture?

I've seen that Joel Salatin feeds his pigs grain on pasture, can I just cut out the high expenses, and feed them woodchips in place of grains?
-1
votes
0answers
48 views

How to build a small (8~6 Watt) hydro power system?

1.1The purpose of the hydro-power system: I want to build a small hydro-power system which is capable of charging one USB power bank. I will be the power source by pumping water up with different ...
1
vote
0answers
35 views

Is there a “break even point” or life cycle analysis directory or calculator that's kept up to date?

I've seen plenty of one-time calculations dedicated to one specific thing (usually plastic vs metal straws, or reusable vs disposable cups) but don't know of any organizations or even blogs that ...
0
votes
1answer
34 views

Charge controller reading voltage but no amps

So I have a small solar setup (100w/200ah) in my camper van. I left the controller/panel/batteries hooked up thinking I would occasionally clear the snow and there would let the sun topped the ...
1
vote
1answer
37 views

What actually happens to LDPE Type 4 plastic when it is recycled?

When LDPE Type 4 plastic used in plastic wrapping is recycled, what is it used for?
1
vote
0answers
34 views

When laying wood chips is it better to put down cardboard on top of grass, or just leave it as is?

I'm going to be putting down about 2,000 yards of wood chips on a garden (to kill off all the plants there) in an area on the edge of a swamp this year, and am wondering if it would be just as ...
1
vote
2answers
50 views

What percentage of LDPE Type 4 plastic that you hand in to be recycled is in fact recycled?

What percentage of LDPE Type 4 plastic that you hand in to be recycled is in fact recycled into something useful? I ask this because I read that China stopped accepting plastic to be recycled ...
1
vote
2answers
63 views

Is there a scientific consensus whether lifestyle or amount of human population the biggest problem

When discussing with a colleague about ecology yesterday, we had agreed on the following premise : Before industrial age, world population was low, and the environment was not significantly damaged ...
2
votes
2answers
84 views

Using LEDs to generate electricity

I recently saw an article that said that LEDs can use electricity to produce light or they can turn light into electricity. If this is true, could the excess light that we have coming into our homes ...
2
votes
2answers
45 views

What's the best way to dispose of scrap lumber?

I recently purchased a home in Wisconsin, USA, and in the process of making repairs and upgrades I find I'm generating a fair amount of scrap lumber each month. I keep whatever I think I'll be able to ...
3
votes
1answer
48 views

How do I recycle Kidde brand smoke detectors?

I live in the United States and I have a non-working Kidde ionization smoke detector. I've read that these smoke detectors should be recycled because they contain some radioactive material. However, ...
0
votes
1answer
22 views

How is amount of wood measured?

There has been some confusion here related to measurement of amounts of wood. There are at least the following units of wood measurement: loose cubic meter of wood stack cubic meter of wood solid ...
3
votes
2answers
113 views

How much CO2 is emitted after 1 hectare of woodland gets burnt in a wildfire?

Wildfires are getting more and more common due to dryer and hotter summer seasons. I'm interested in the impact of wildfires in terms of CO2 contribution in the atmosphere. I'd like to get a gross ...
3
votes
2answers
50 views

Embodied carbon in limecrete vs concrete

I'm planning an extension to my home and one of the many decisions is whether to go for a standard concrete slab over hardcore, or limecrete over blown glass with concrete strip foundations (e.g. ...
1
vote
3answers
114 views

What will life be like in 2050? [closed]

I've seen a lot of stuff saying researchers predict we'll run low on fossil fuels in 2050 and that pollution will be a big problem then. Does this mean that life will suck then? What would things be ...
2
votes
2answers
61 views

Are there any active vehicle to grid programs around the world that are accepting customers?

It seems like people have been hyping the benefits of vehicle-to-grid (V2G) for decades. The basic premise of V2G is that electric vehicles, when plugged in to the grid to charge, can offer services ...
4
votes
1answer
52 views

Can i use expired can goods in my cut grass to make mulch

Just want to know is it safe to use expired can goods for compost making, examples: Diced tomatoe,evaporated milk,turkey gravy,different Campbell soups,can pumpkin,coffee
2
votes
2answers
79 views

How to persuade people that scrappage schemes & suchlike are a bad idea?

One idea frequently cited as a way of reducing pollution is the use of scrappage schemes and low-emission zones to persuade people to replace their old cars with newer, 'more efficient' ones. IMHO ...
1
vote
0answers
50 views

Aquaponics system in apartment livingroom

I am interested in building my first Aquaponics system in the livingroom of a 70m2 apartment. I plan to have a 100 litre fish tank with a 75litre grow bed. I measured the temperature to be about 15-25 ...
3
votes
2answers
73 views

What is marginal energy?

I answered to a question and used the term "marginal energy". The answer wasn't understood by all, so I'm going to expand on the term to illustrate how it works. So, what is marginal energy?
0
votes
2answers
49 views

A hydropower based power-generating fitness system and some questions

I'm currently researching and experimenting a system concept about hydropower-based fintness. I recorded my initial experiment footage and you can watch the video on Youtube. Befor talking about this ...
1
vote
0answers
32 views

Adding solar to a small van.. just need steady 12v source not a battery bank.. question about switches and isolators? [closed]

I have a 2018 Ram Promaster city cargo van with OEM 12v 70AH 120RC Sealed Led acid battery and a 160a alternator. Sitting on top of the battery I have a 1200 Watt pure sine 100v inverter connected ...
3
votes
1answer
80 views

How can I stop using HFC refrigerants?

Are there any HFC-free air conditioners on the market? How about refrigerators? Given the massive warming potential of HFCs I would expect there to be more information on how to avoid HFCs and on what ...
0
votes
1answer
32 views

Is there any Pellet molder alternative?

Our groupmates have a research topic that includes making a plastic pellet. We have to think of an alternative way to produce plastic pellets out of melted HDPE plastic bags since we're still students ...
2
votes
2answers
73 views

Is there a recent life cycle analysis for cloth diaper and for disposable diaper?

I am looking for specific studies on the life cycle of cloth diaper versus disposable diaper. The municipality I work for wants to establish a compensation program for parents who want to choose a ...
3
votes
1answer
47 views

How can I calculate from peak power (kWp) to energy per day (Wh/day)?

According to this Wikipedia article (Dutch) there is a rule of thumb that the energy output of a solar system is 850 to 1000 kWh per year per Wp. However, this takes the grey climate of the ...
2
votes
1answer
80 views

Is the Food Cycler a good option for composting?

I do not have time to do a good job composting so the "Food Cycler Platinum Indoor Food Recycler" seems like a good idea despite its price. Does it release CO2 or methane? Does it consume so much ...
6
votes
1answer
99 views

How many times do you need to re-use cloth napkins to offset their impact?

My local municipality has a "Waste Watchers" program that provides resources for reducing the quantity of waste sent to landfills. One of their tips is to use cloth napkins instead of paper napkins. ...
2
votes
3answers
110 views

What is the most commonly available eco-friendly writing instrument?

How would you rank the following in terms of damage to the environment: Pencils (regular) Mechanical Pencils Single-use ball point pens. Refillable ball point pens. Fountain pens The eco-friendly ...
4
votes
2answers
69 views

Are there any good diy examples of home level STES or BTES

I just came across the concept of STES - Seasonal Thermal Energy Storage and more specifically BTES - Borehole Thermal Energy Storage. (Example project) I wondered if anyone had built a small scale ...
2
votes
1answer
245 views

What is the wind wake effect and why is important for wind turbines?

I was reading about wake models. However it is unclear to me how they are used to model wind turbines. Could anybody explain me what are wake models and why it is important to predict wakes in wind ...
0
votes
1answer
68 views

What level of light intensity (lumens) do you need across a solar panel in order to obtain 15% energy efficiency?

What level of light intensity (lumens) do you need across a solar panel in order to obtain an incident-light to energy-output efficiency of 15%?
4
votes
1answer
70 views

What do I feed my snails?

So I've recently gotten into foraging and found a site called eattheinvaders.org that encourages people to eat invasive species. One of the most invasive species here in California is the common ...
2
votes
1answer
34 views

Efficiency considerations of forced air vs. hydronic central heating

For a building that is centrally heated by local fuel combustion (i.e. heating within the building rather than district heating), one may distribute the heat throughout the building using as a energy ...
0
votes
2answers
139 views

Is hydrogen a good way of storing energy from excess hydroelectric generation? [closed]

Referring to hydro electricity generation, a lot of what we produce is wasted as the buyer buys only the minimum generation. What would be the appropriate measure to use that excess energy? Is ...
3
votes
3answers
69 views

What function does hanging a compost bin serve?

I just came across a school project to build a hanging compost bin: Lakeview Compost Bin. The benefits of composting have been a frequent topic here, but I'm wondering what purpose is served by ...
5
votes
1answer
58 views

Recycling with stickers

So many of our products have stickers/tape on them, i.e. boxes, glass and plastic. I have been removing stickers/tape from boxes (except amazons recyclable tape) but do I need to be doing this for ...

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