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1answer
30 views

Can plastic be sustainable?

After all those scary stories about microplastics (I think you don't need references on that one), I was surprised to discover plastic solutions being suggested, even promoted you can say, in ...
3
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2answers
39 views

Is there no such thing as “pant” in the USA or outside some European countries?

I was under the impression that this was a global phenomenon since at least 50-70 years or so, but apparently not? Basically, I went to the Swedish Wikipedia article for "Pant": https://sv....
1
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1answer
33 views

What is the current best system to build greywater homes as comfortable as regular homes?

This is similar to, but more general than this question and referring to from scratch buildings. I've seen Create an Oasis with Greywater and it's an awesome resource to build a DIY system. The ...
1
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2answers
32 views

Is shower water a healthy source of graywater to flush toilets with?

I've been trying to think of creative ways to save on water usage, and one way I thought of was to collect graywater from showers or washing dishes to use for flushing the toilet to reduce # of ...
2
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2answers
22 views

How long does it take for different types of textiles to decompose in a landfill?

I've looked through the first five pages of Scholar search results to my request "landfill decomposition of textiles cotton" and found zero useful information. Is there any scientific ...
1
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1answer
30 views

Do solar PV roofs make sense for semi trucks?

Today I read the news that Tesla is about to start production of electric semi trucks (aka tractor-trailers). Given the size of the trailer and its long, flat roof, I wonder if it would be feasible to ...
1
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0answers
12 views

pymrio: how to perform product or sector-specific analysis?

I'm using the Python tool pymrio to do emission analysis for various traded goods (using Exiobase). I see how production and consumption based emissions are calculated on per-country basis, in the ...
2
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1answer
42 views

How would a garden adapted to drought look like?

Hypothetical question, since I neither have a garden, nor live in a region seriously affected by drought (yet). In context of the current drought along the western US coast, experts and scientists ask ...
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2answers
52 views

What is the frequency of fires at solar power generation facilities?

https://pv-magazine-usa.com/2019/08/22/there-are-solar-power-fires-per-year/ This data implies (roughly) 1 in a million solar fire risk. So say I have a 1gw solar farm with 1kw panels. Does this mean ...
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0answers
30 views

Does cotton really require all those harmful pesticides?

They say "cotton is bad because they use pesticides". But are they really necessary? Suppose your options are limited when it comes to dramatically reducing cotton farming's water ...
2
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0answers
26 views

Why Are Hydronic Electric Baseboards More Efficient Than Convection Electric Baseboards?

My understanding is that convection electric baseboards use electricity to run current through a resistor, which generates heat. My understanding is that this should be fairly efficient in the sense ...
0
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1answer
43 views

How long does it take for a cotton piece of clothing to decompose under landfill conditions? [duplicate]

How long does it take for a cotton piece of clothing to decompose under landfill conditions? I skimmed through the first five pages to my Google Scholar query "cotton degradation decomposition ...
1
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1answer
33 views

Best sustainable shade option for windy terrace

The stone terrace at our house on a Croatian island gets very hot during the summer. So hot it is not possible to walk across barefoot. We would like to add wind-resistant shading, there is already a ...
4
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3answers
46 views

Is there such a thing as safe and green incinerators?

Is there such a thing as safe and green incinerators? Do those cutting-edge incinerators in developed countries like Sweden emit pollutants in quantities that can negatively affect human health and ...
4
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0answers
72 views

Radiative Cooling for Residential

I've seen a lot of references to films which radiate heat from an underlying surface out into space. For example: http://radi-cool.com/ https://arpa-e.energy.gov/technologies/projects/passive-...
1
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1answer
31 views

What is the climate impact of shared electric kick scooter systems?

During the last few years, shared electric kick scooter systems such as Voi and Tier have become common where I live. The system consists of a number of shared electric kick scooters scattered around ...
1
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1answer
43 views

Renewables vs Fossil Fuel Cost Comparisons, without Subsidies

They said that Solar and Wind are now cheaper than fossil fuels. One of the primary reasons is subsidies and new technologies. Does anyone know the comparison research using No Subsidies. If we ...
1
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2answers
48 views

Why is the Energy Guide efficiency rating of my air conditioner so much lower than the specification?

Now that my partner and I are working from home indefinitely, we decided to install central air conditioning. We got quotes for a unit with a 17 SEER efficiency rating, and ultimately picked this one. ...
1
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0answers
61 views

What darknet would you choose (or is it not justifiable)?

I want to know if there are any darknets that are sustainable. I have my doubts about Tor due to their apparent interest in Proof of Work. https://blog.torproject.org/stop-the-onion-denial In ...
0
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2answers
106 views

Can I use the furnace fan to cool my house in the summer?

We replaced our furnace last year, and the new one has a fan which can be run independently of the heating function. The fan recirculates air throughout the house. Is there a way to use this to keep ...
5
votes
1answer
90 views

How can a purely vegan diet be the most sustainable?

There seems to be a growing consensus, that the vegan diet is the most sustainable for our environment on multiple levels, such as land use, water use and co2. There is some debate about whether ...
1
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1answer
67 views

Are hydrogen powered appliances feasible today?

There's a lot of talk about hydrogen. But is there any kind of genuine marketplace for "normal" household appliances to run on hydrogen instead of natural gas: I mean Range/oven Water ...
4
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3answers
80 views

What quantity of basalt would power NYC with power for a day?

Some companies are refitting steam power stations to hot basalt, where many tons of rocks are heated to 750°C by wind power and the thermal energy is used to generate steam in power stations. How much ...
2
votes
1answer
50 views

DIY portable solar panel mount

So I just bought one of the 28W Big Blue portable solar panels on Amazon and got myself a cheap camera tripod from a local garage sale, all for an upcoming camping trip. I want to use the tripod to ...
2
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1answer
37 views

Understanding the relation between MTCE & MTCO2E

How do I convert MTCE/ton to MTCO2E/metric ton? Should I multiply it by 1.1 (ton to metric ton) and then by 3.67 (MTCE to MTCO2E)? For example, take a look at Exhibit ES5 here. Recycling aluminum cans,...
4
votes
1answer
55 views

What is the recommended way to dispose of a used water filter?

I have just replaced water filters for the water filtration system recently. There are a total 5 filters. 1 of them is ceramic, the other 4 are made of other materials which could probably be opened ...
2
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2answers
57 views

grid-based gravity assist power generaiton

I was discussing with a friend about renewable resources in which you can generate and store power for a long time. In this one way which I know is hydropower where when you have huge requirement of ...
1
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0answers
45 views

Is UHT better for the environment even if the Tetra Paks aren't recycled

UHT is well known to be better for the environment, see e.g. https://www.newscientist.com/article/dn27898-so-many-milks-but-do-their-health-claims-really-stack-up/ However, our local council does not ...
3
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1answer
50 views

How much methane is leaked for each kWh delivered to my home?

Given how leaky natural gas infrastructure is, reducing my usage at home (by turning back the thermostat, or using more efficient appliances) will also result in reduced methane emissions throughout ...
1
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1answer
50 views

When does wind make more sense than solar for a home application?

Let's say I have a fixed amount of money that I can either spend on a complete solar PV system (panels, inverter, all the hardware and wiring) or a complete wind system (turbine, inverter, all the ...
3
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2answers
107 views

Is cheese wax compostable?

Is cheese wax compostable? I have some Babybel cheese wax and I was wondering what to do with it.
1
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1answer
61 views

Why not outlaw low density plastics that cause ocean pollution?

I know it costs. But we got rid of chlorofluorocarbons and are preparing to eliminate stuff like coal! This in between. Proposal: By international agreement get rid of floatable PE, HDPE and PP and ...
1
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1answer
45 views

Why is reducing the consumption of recyclables is better than recycling recyclables?

Why is reducing the consumption of recyclables is better than recycling recyclables? Some recyclables can be recycled only a limited number of times (plastics) so I partially understand it. But other ...
3
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0answers
49 views

Can mealworms form part of a healthy diet in the UK?

Mealworms for birds are a cheap form of nutrition. Could they be processed at home in a way to make them healthy? Dried mealworms are sold as bird food for just under £8/Kg in the UK or $3/Kg from ...
1
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1answer
46 views

Difference in Solar wattage between 24V and 48V system

[Cross-posted on Victron's community https://community.victronenergy.com/questions/85929/difference-in-solar-wattage-between-24v-and-48v-sy.html ] Background: I'm on a boat with a 48V system and a 24V ...
2
votes
1answer
58 views

Is there a total cost of ownership calculator for cars that will give me electric vehicle options?

I recently replaced a 20-year-old ICE vehicle in need of significant repairs with a five-year-old ICE vehicle. We had hoped that we could buy an EV this time around, but models that meet our needs are ...
1
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1answer
39 views

What hydrocarbons are produced by a diesel motor?

HC (I assum hydrocarbons) is a column in the euro emission standards for trucks & buses. Which hydrocarbons are produced and at what quantities? Would the particulate matter emissions be included ...
2
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1answer
35 views

Does a single Euro VI bus really release less NOx than a euro 6 diesel car?

A transport expert claimed that a Euro 6 car has fewer NOx emissions than a Euro VI bus, surely this cannot be correct?! https://en.wikipedia.org/wiki/European_emission_standards Euro 6b (diesel car) -...
4
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0answers
50 views

Which dishwasher program is best to conserve the plates?

I was arguing with my wife over which dishwasher program to use. I want to use the eco program because it is most environmentally friendly, but she countered that the long program (3:30h) puts more ...
1
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1answer
82 views

What type of solar panels to use for a house of 50 m2 and 3000 kW of consumption?

I am beginning to acquire knowledge to assemble my first self-consumption solar kit and I have been investigating what kind of solar panels I should use for a house of approximately 50 m2 with a ...
2
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0answers
175 views

What is the fair-market value of the Solar System installed by Solar City in 2013?

I live in the Maryland suburbs of Washington DC. On December 31, 2012, I signed a lease deal with SolarCity (now Tesla) to install solar panels on the roof of my home + associated electrical ...
4
votes
1answer
79 views

How much electricity does 1,000 liters of water per meter of height fallen generate in various hydro generator arrangements?

How would one go about calculating the amount of electricity (kilowatt hour) produced from a quantity of, say, 1,000 liters of water per hour falling from a 20 meter fall through a hydro electric ...
2
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0answers
60 views

Should we use paper, plastic, or reusable bags. If reusable, which kind?

I found this site looking for one specifically geared to picking products based on sustainability. I'm not sure if such a specifically-focused site would actually be more effective than this one. The ...
0
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2answers
51 views

Carbon offset heating oil

My impression is that carbon offset plans are a rather imperfect and somewhat temporary solution - but still seem to be a step in the right direction, and at least signal consumer demand for green ...
2
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0answers
20 views

Worm bin design using stacked wood frames - is it okay to have gaps between frames?

I have used worm bins before that we premade with plastic. They were nested bins such that the bottom of an upper tray was directly touching the scraps piled up in a lower tray. Worked well! Now at a ...
5
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2answers
184 views

Do SSDs have a lower environmental impact compared to HDDs?

In this question on Super User they say that Solid-State Drives (SSDs) use much less power than traditional Hard Disk Drives (HDDs). I read some internet posts and research articles that backup this ...
3
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0answers
24 views

How does the afterheating function work for a solar hot water controller?

I have Resol DeltaSol BX controller for my solar hot water which I would like to configure best for my situation but the wording is a bit puzzling for me to understand. It was installed about 9 years ...
5
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0answers
23 views

Is thermal heating of soil contaminated by coal gasification plant safe in a built-up zone?

Where I stay, theres a site (see intro here) nearby that used to be a coal gasification plant (produces coal gas for lightning etc.). The plant contaminated the soil with PAHs and heavy metals with ...
0
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3answers
88 views

Grid tied inverters that work during power outages

Is it possible to have a grid tied solar installation operate when power is out without a battery bank? All of the grid tied inverters I have found kick offline during power outages. This is a fine ...
3
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0answers
81 views

What is the most cost effective way for an individual to contribute to global climate action? (For an Australian resident)

Edited: I would like to spend money in the most effective ways (local tax considerations included) I understand that in order to be effective at tackling climate change there needs to be action at a ...

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