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1answer
106 views

What type/breed of animals do I want for food forest maintenance?

I'm currently building a food forest that I plan to gate in to protect animals. What type/breed of animals should I look into for keeping the forest floor clean?
2
votes
1answer
88 views

Detailed breakdown of Solar PV installation site test (site survey)

I'm slowly teaching myself on how I can build a solar PV system for my own home. Anyone kind enough to provide a breakdown of what tools i need to test my site for an optimum conversion of solar ...
2
votes
1answer
835 views

Diatomaceous earth ground injector

I am researching ways to eliminate difficult yellow jacket (wasp) ground nests without using dangerous chemicals. Does anyone know of a commercial machine that is made to inject large quantities of ...
2
votes
1answer
87 views

5 Questions to indicate carbon impact

It looks like I will have the opportunity to add a few (probably only 5) questions to a questionnaire to get an indication of the persons carbon footprint. The questions I am think of are: 1) How ...
2
votes
1answer
834 views

How much heat loss occurs due to unsealed downlights?

I would like to convert my downlights to LED. However, the LEDs I've found have holes around them to let the air though. I've been told this is for ventilation purposes and blocking these holes or ...
2
votes
0answers
37 views

Solar Panel Drawing Amps instead of adding them?

I have an off grid powered house powered by 6 x 12v batteries all hooked up in parallel. I also have 4 x 150w 12v solar panels all hooked up in parallel too. Things were good however I decided to move ...
2
votes
1answer
71 views

Hyper carbon accumulator(s) for backyards

I am curious, what people could do with a small piece of land like their home backyard (say originally it is a regular lawn smaller than 20m^2, in temperate continental climate (so pretty harsh)) to ...
2
votes
0answers
16 views

What are the most common sources of VOC pollution in outdoor air?

I have a personal pollution monitor that has been recording higher levels of VOCs the last 18 hours or so and I'm trying to understand and consider the reasons for this. I live in a fairly busy city (...
2
votes
0answers
15 views

Is it worth buying compostable dog poop bags instead of plastic if I'm going to throw them in regular trash bins? [duplicate]

I walk my dogs twice a day, pick up their poop with small disposable bags, and throw the bags in the first municipal trash bin I come across. They will presumably end up in a landfill. I previously ...
2
votes
1answer
89 views

CO2 track of staying in huts which are supplied by helicopter

How much CO2 do we produce by sleeping on average in a hut (including breakfast and dinner)in high-altitude > 3000 m)? Let's assume that the hut offers 50 beds and that a helicopter has to supply the ...
2
votes
0answers
34 views

How to make extracts and fragrances from fragrant plants like Sage

I'm looking to try using more natural products/solutions in our day to day life and some things that I am considering are fragrances, soaps and essences (food). I have read that Sage plants are edible ...
2
votes
0answers
38 views

Objective Index of environmental impact of consumer goods and food [closed]

I often hear arguments from people around me, about the environmental impact of certain consumer behaviours like: eating meat using plastic bags travelling via car instead of plane and many others. ...
2
votes
2answers
96 views

Does a short-term shut down of a coal plant cause more CO2 emissions than keeping it running?

According to this article from Reuters, it takes up to eight hours for a coal plant to reach maximum generation. This means that four up to eight hours after it starts up, the plant is burning coal at ...
2
votes
0answers
38 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 ...
2
votes
0answers
30 views

What are the root and aboveground dimensions of a cotton plant at its 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 ...
2
votes
0answers
43 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 ...
2
votes
2answers
109 views

Can an internal greenhouse improve the thermal resistance of a glass panel wall?

I've noticed that most thermally efficient constructions limit the use of windows due to glass' low R-value. According to this, one is forced to choose between well-lit spaces or thermally efficient ...
2
votes
0answers
70 views

What is the environmental impact of recycling beverage containers, by material?

I just read the article "Oregon Launches First Statewide Refillable Bottle System In U.S.". Discussing the environmental impact of this system, the article says: Until that facility [in Portland, ...
2
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0answers
121 views

Lead nano carbon batteries over Lithium?

The person quoting me on an off grid solution is suggesting lead nano carbon batteries instead of Lithium Ion or ordinary lead acid. Is this technology mature enough yet? And is this now the way to ...
2
votes
1answer
33 views

What is the current tax-credit for homeowners who install a geothermal heat pump system?

I'm confused by what this website is telling me about the tax-credit for a geothermal heat pump: https://www.energy.gov/savings/residential-renewable-energy-tax-credit It says: A taxpayer may ...
2
votes
0answers
29 views

For the exactly same income, does a person pollutes more when living in a big city or in a small town? [duplicate]

I had a recent argument with a coworker (we are both engineers) that the amount of pollution (trash+water+air) generated by a person increases with the person's income (we both agreed on that) but my ...
2
votes
1answer
147 views

Solar water-pump working continuously

I want to install a solar water-pump or a windmill water pump to extract water from an aquifer without stop during the day (constant flow). The solar water-pump is less expensive and comes with the ...
2
votes
0answers
77 views

What is the average net impact of a human on the sustainability of our habitat?

I've been writing an informal essay on the true cost of everything and as per the question asked at the end, I want to approximate the average human's impact on habitat destruction/human ...
2
votes
0answers
30 views

Using glass bottles in walls of buildings [duplicate]

I have seen pictures of homes and buildings in dry climates were they have used glass bottles in the walls with what looks like either concrete or mud. Is this just for aesthetics? Do they provide ...
2
votes
0answers
88 views

What's required for hydroponic farming in a container?

I have a container of size L 1.8 m × W 1.86 × H 1.73. I am planning to turn this into a hydroponic container for growing cooking greens (salad etc.). The thing that concerns me is the stuff I probably ...
2
votes
0answers
126 views

Useful plants to grow in garden [closed]

I am a guy living in Kerala, India. I have a plot of 5 cents (about 200 square meter) in my backyard. I would like to know which plants would be helpful for planting in the plot (edible fruits or ...
2
votes
0answers
64 views

Permaculture Urban Transition [closed]

In the more realistical and pragmatical way, which are the main steps a set of people in a medium sized urban envinroment, should undertake to convert the city to a permaculture oriented living style? ...
2
votes
0answers
68 views

What is the Index of Sustainable Economic Welfare (ISEW)?

What is the Index of Sustainable Economic Welfare (ISEW) about? Does it measure the relation between energy and well being? Or does it have other parameters?
2
votes
0answers
55 views

How much capacity inverters and batteries should i need to set up a 800 watts solar panel? [closed]

my requirement is just to run ten 4-watts LEDs, a 0.5 HP submursible motor and four ceiling fans through solar panels. Calculations suggested that i need 800 watts panels to work on it. But I'm ...
2
votes
0answers
121 views

Building a boat - out of recyclables [closed]

Looking for ideas to make a boat out of mostly recycled material. Two idea's that come to mind is cardboard and use weather sealer on it, and caulking the edges or plastic bottles, jugs, and the like ...
2
votes
0answers
63 views

How effective are “GreenUp” (opt-in utility company green energy) programs? [duplicate]

My local Seattle utility offers a "Green Up!" program where customers can pay extra on each bill to buy energy from more renewable sources. I'm signed up to contribute at the highest level ($12/month),...
2
votes
0answers
48 views

How to make a controlled discharge of batteries connected to the grid? [closed]

I currently have 1600 W wind turbine with grid tie inverters of 12-24 volt 1600 W and I now want to add batteries to my system with a controlled discharge, Adjustable from 10-20 amps without ...
2
votes
0answers
738 views

How do trees absorb carbon dioxide?

How much of carbon dioxide is used in the first years of the tree, and how much in maturity? How much goes in the soil, and how much in the wood? What about the night? I live in northern Italy, and a ...
2
votes
1answer
47 views

Coupling a solar DNI dataset with demand loads at different time zones

This question is about analyzing the potential of concentrating solar power (CSP) to meet different load curves, each load curve at one time zone. I would like to know the best way to analyze the ...
2
votes
0answers
26 views

How can I get my landlord to improve my apartments heating efficiency? [duplicate]

I am renting a unit in an older building that has a lot of gaps in the doors and windows and poor insulation in the walls. Is there a way to make the landlord fix this? Some sort of property codes or ...
2
votes
0answers
46 views

What kind of population-to-agriculture relationship is the most sustainable? [closed]

City/Rural Relationship High concentration of humans and low concentration of agriculture that are largely fed by areas outside the city that are very low in human population but are very high in ...
2
votes
0answers
439 views

Why do my plants sprout and die in my aquaponic system? [closed]

I have an aquaponic system. My herbs sprout and grow to about 3 inches, then wilt and fall over. Is there something lacking, or is this a result of root rot? Should I lower the water level? I have ...
2
votes
0answers
93 views

What lifestyle choices have the biggest impact on a local economy? [closed]

As someone who lives in a city and expects that a sustainable world will be interdependent rather than isolated homesteads, I'm interested in where money (spent locally as an assumption) is best ...
2
votes
2answers
70 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 ...
2
votes
1answer
67 views

Should a projector be turned off if it won't be used for five to ten minutes?

The conference rooms in my office have projectors mounted on the ceilings, typical of many offices. During the day, several meetings will be scheduled in the rooms, with perhaps five to ten minutes ...
2
votes
1answer
53 views

Are Eco-Schools more effective teaching children about sustainability?

Is there any evidence that Eco-Schools are better at building sustainability awareness for school kids and teaching them about renewable energy technologies? Or is there a better approach that might ...
1
vote
4answers
148 views

Is it ethical to dump packaging of products at the same store you bought them from?

I was told to ask this question here. Note: This question is in the context of reducing trash at home. Say I buy some meat at the grocery store. I would prefer to bring my own container and not use ...
1
vote
2answers
229 views

What type of guinea pigs will keep a food forest well cleaned?

I'm building a food forest, and was wondering what type of guinea pigs would work best to keep a food forest floor clean while not harming my plants so I can have plenty of food as well as getting ...
1
vote
2answers
91 views

What is the most sustainable packaging for milk?

When buying milk, there are three forms of available packaging: plastic containers, TetraPak, and glass bottles. None of these forms of packaging are optimal - plastic containers are single-use, ...
1
vote
2answers
54 views

What kind of material would be most ideal to enclose grains/legumes to smash?

Here's some background on my question, before I actually ask it (my question is in bold below): I'm wanting to have a very sustainable method of turning grains, legumes and pseudocereals into flours (...
1
vote
1answer
263 views

Energy saving lamps suggestion

My dining room lights are shown in the pictures. I have two of those fixtures, with 3 bulbs each. 1) On the plastic chandelier it says "MAX 40W", but the lamps that when I first arrived in the flat ...
1
vote
1answer
76 views

Approximate CO2 emissions for shipping a parcel from one location to another

First of all, I know it is impossible to answer this question accurately. But that is not the point. An approximation will suffice. For a project I need to display the CO2 "cost" for shipping a ...
1
vote
3answers
155 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 ...
1
vote
1answer
82 views

Should storm windows be left open in the summer to reduce hothouse heat gain?

During the summer is it more desirable to have storm windows open, partially open, or closed? I have old wooden, single-pane windows with aluminum storm windows and I have installed energy film on ...
1
vote
2answers
58 views

Dealing with waste in countries without waste management infrastructure

In previously sustainable countries, westernization brings unmanageable waste: We get flooded with plastic but don't even have garbage collection. Apparently the result is that 40% of the world's ...

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