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votes
1answer
151 views

How long will a 12V Koolatron compact cooler last with 12Ah battery?

I'm thinking of purchasing a Koolatron P20 compact cooler and this ExpertPower 12200 battery How long will cooler last with this battery at full charge? Is this the correct battery to use for this? ...
2
votes
4answers
119 views

Low-cost solar energy alternatives to power a single appliance in an apartment?

I'm searching for information on solar energy alternatives that are accessible to people like me without having to break the budget. For example, I live in an apartment with a rooftop, and I want to ...
2
votes
1answer
51 views

How to stop paint deterioration of inner side of roof

Our concrete roof paint deteriorates from inner side, probably due to presence of moisture in concrete, & it results in poor luck of roof .. Please guide me , how to stop paint deterioration ? ...
2
votes
2answers
66 views

Renting solar panels in another state

I live in Pennsylvania in the United States. Due to a combination of frequent overcast days, potential storm damage, and my wife not wanting to cover up our recently-rebuilt roof, I'm not able to ...
2
votes
1answer
69 views

Stressing chickens out when it's time to lay

I have 13 chickens. They have a chicken coop with a large run attached by wire mesh on all sides. I have 2 terriers that would just as soon eat them, so I can't let them out of the run to roam around ...
2
votes
2answers
367 views

Infra red heaters

I have a nine hundred square foot home that has a wood stove as its only source of heat. I am planning to be away for one to two weeks a couple times this winter and am wondering if an infra red ...
2
votes
1answer
65 views

How would keystone pipeline affect nature?

I know that the legislature for the project was not passed, but only by one vote in the senate. If it were to pass, would the pipeline just wipe out miles of nature, or do politicians have any concern ...
2
votes
1answer
351 views

Biofuel efficiency

I hear from alarmists that 1 food calorie costs 10 oil calories. Thereby, to produce 10 calories of biodisel, you need to spend 1 calorie of oil. Is it all right? It seems contradictory to me. It ...
2
votes
1answer
187 views

How many vessels does it take to build an offshore wind farm?

How many vessel-days does it take to build an offshore wind farm, per turbine or per megawatt? I notice that when an offshore wind farm is being built, there are quite a few vessels milling around: ...
2
votes
1answer
45 views

Does decanting eliminate heavy metals in water?

If heavy metals are present in water would they precipitate to the bottom of a container if the water is left decanting long enough? This would be in order to reduce water contamination when no ...
2
votes
2answers
100 views

What are the impacts on CO2 emissions from using cloud software?

I am wondering what are the positive as well as negative impacts on CO2 emissions from using cloud software like Google Sheets, in comparison to traditional software that run locally or on a local ...
2
votes
1answer
73 views

Rule of thumb for estimating the carbon footprint of a manufactured good

I am looking for a simple "methodology" to roughly estimate the carbon footprint associated with buying a new e.g. toaster. More precisely, I would like to have clues to deal with such a situation: ...
2
votes
1answer
30 views

Can data from wind and solar farms be used to improve climate modeling?

As of 2018, there were over 341,000 wind turbines around the world. In the U.S. alone, a projected one million homes will have roof-top solar PV by 2020. This does not include commercial or utility ...
2
votes
1answer
43 views

How more efficient are low surface temperature radiators than traditional boiler systems?

I've recently come across low surface temperature radiators (E2 technology) as a form of heating. Unlike a traditional water radiator they operate at 30 - 50 C instead of 75 C. Small fans pull air ...
2
votes
1answer
62 views

Which of disposal or production of leather has a greater environmental impact?

Several times I've heard of people supporting leather against non-animal alternatives, saying that since animals are killed for meat we have a lot of skin to use and that it would be bad not to use it....
2
votes
1answer
41 views

Do light fixtures with small solar panels require direct sunlight?

I purchased an Osram Ledvance DoorLED Solar product which charges its own batteries and turns on automatically at nighttime to provide light. It requires a 7 hour minimum charge time. When there is ...
2
votes
1answer
69 views

Why western countries do not heavily tax beef imports?

I hear that Brazil slowly but surely burns the Amazonian forests (apparently already payed for by western countries) to make room for cows and supported cultures like soybean. This is obviously bad ...
2
votes
1answer
74 views

Non-plastic straws in Germany?

I want to find non-plastic straws. Are there are any in Germany, that you can physically buy? I live in Bavaria. I have a big Edeka, Rewe, Lidl and Rossmann nearby, but I am ready to travel "great" ...
2
votes
1answer
89 views

Recycling : paper, plastic or aluminum, which one to choose, if only one?

Supposing I can focus only on one type of material to recycle, choosing from paper (card board etc), aluminum (can etc) or plastic (water bottle etc), then which choice of material will help the ...
2
votes
1answer
66 views

Are there examples of (more) sustainable scientific conferences?

Scientists frequently speak out about the dangers of climate change, and I'm sure there are many scientists who make concious choices for their own lives with a view towards sustainability. But are ...
2
votes
2answers
73 views

Electric cars and grid power capacity

The UK has a target to be carbon-neutral by 2050: As we can see in the image large cuts across all type of CO2 emissions are required. This article by the BBC suggests a number of ways in which ...
2
votes
2answers
189 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 ...
2
votes
1answer
60 views

Do people who work in sustainable offices make sustainable choices at home?

I have heard that employees who work in organizations or buildings with a focus on sustainability are more likely to make more sustainable choices in their personal lives and homes. For instance, if ...
2
votes
1answer
101 views

Comparing train station pollution with smoking

A research done in my city's main train station showed 400,000 UFP particles per cubic centimetre. I am looking into printing pamphlets and wanted to inquire how does spending half an hour in a 400,...
2
votes
3answers
107 views

Energy use for monitor vs pc tower

I work in a few schools where children have been taught to turn off the monitors to save energy. Unfortunately, this is all that they turn off. Every Monday morning I find 30+ computers running with ...
2
votes
1answer
64 views

Portable AC or Dehumidifier?

I currently am a recent graduate and I am living in a place that does not have AC. I am looking to buy a portable AC or to buy a dehumidifier. I currently live in Minnesota and sleeping at night when ...
2
votes
2answers
468 views

Are aluminum sheets appropriate for rainwater catchment roof?

I was thinking of building a rainwater catchment system at my place in the boonies, but ... I want to make sure -- priority one -- I'm not going to get toxic stuff in my water. I looked at the ...
2
votes
1answer
130 views

How large should be solar panel to power air conditioner?

Solar panels are more efficient in sunny regions, but even in places that receives less sunlight, there are hot days when electricity consumption peaks because of air conditioning. More sun = warmer ...
2
votes
1answer
401 views

What are lead crystal batteries?

I recently read about 'Lead Crystal' batteries on the Internet and am wondering if they are suitable for a solar-powered house. Does anyone know what these are? How old is this technology? Is it ...
2
votes
1answer
125 views

Where to find the latest news on sustainability issues?

I am looking for recommendations for websites, journals, blogs, and magazines that one could turn to to find the latest news and research on issues of sustainability, without (or at least with minimal)...
2
votes
1answer
58 views

How to create healthy bat living conditions in Vermont?

I want to install bat houses at my property. What conditions do bats prefer to live and what conditions do they NOT to prefer to live in?. I live in Vermont on a 2 acre parcel, and have a section of ...
2
votes
1answer
976 views

How long should a tray of 1/2" deep barley seeds be left to soak for creating fodder?

I am interested in generating barley fodder for my farm animals to feed on. How long should they soak and at what frequency should they be soaked for creating the best fodder? (There are a few ...
2
votes
1answer
61 views

What are limits of root zone wastewater treatment?

Root zones are better than industrial wastewater treatment in many ways - sustainability is the biggest one, but the price is favorable too. On the other hand, I've heard that root zones are ...
2
votes
1answer
73 views

Is it ok to mix battery brands in a solar battery bank?

I plan on installing 12V 100 Ah LiFePO4 batteries, but since they are so expensive, I might buy from different vendors. The batteries have the same chemistry, voltage, and amperage, but are from ...
2
votes
1answer
57 views

How to work around a supposed Huawei SUN2000L-5KTL inverter throttling issue

I have a PV system with a WEG SIW300H M050 inverter, which is simply a rebadged Huawei SUN2000L-5KTL (link to the manual). Its rated output power is 5000 W while its nominal apparent power is 5500 VA. ...
2
votes
2answers
75 views

Should I use a plastic trash bag for my recycling bin at home or not?

I want to have a recycling bin at home in addition to a trash bin. Should I line my recycling bin with a trash bag and bag it up when it's full to toss in the dumpster's recycling bin? Or should I ...
2
votes
2answers
130 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. ...
2
votes
2answers
97 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 ...
2
votes
1answer
36 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 ...
2
votes
1answer
48 views

What are the uses of bones from the different animals bred industrially?

The food industry grows animals for meat, but some parts cannot be sold. What is the final use of bones from the different animals grown industrially? pigs, beef, poultry.
2
votes
1answer
71 views

Discretionary Carbon Footprint vs. Per-capita footprint

Are there any published academic studies which compare per-capita carbon footprint against discretionary carbon footprint (ie. lifestyle-connected emissions)? per-capita footprint is the result of ...
2
votes
1answer
43 views

How can I easily tell which plastics are Biodegradable? [duplicate]

How can I easily tell which plastics are Biodegradable and which are not?
2
votes
1answer
116 views

What percentage of waste food is turned into electricity and/or biogas?

Food waste is a big problem in the U.S. and (presumably) many other parts of the world as well. From Scientific American: According to the U.S. Department of Agriculture’s Food Loss Project, we ...
2
votes
2answers
137 views

Life-cycle assessment of software products?

I'm a software engineer, and lately I've been thinking whether it's possible to delineate the environmental impact of a software product - say a web service, a website, an app for your phone, etc. It ...
2
votes
1answer
73 views

How to size an PV array?

Due to limitations on the street fuse we are going to make a new house ( 50 m2 ) a hybrid off-grid solution that is at the rear of an existing house which is on the grid. So, this means we can charge ...
2
votes
1answer
82 views

What is the problem in my aquaponics system?

I have an aquaponics system with 20 Koi fish and different plants which works by the Siphon method , and the fish water is about 22-26°c, which is usually less for plants of 2°c degrees. The water is ...
2
votes
1answer
503 views

How to use Maximum Sustainable Yield concept with given a given population, growth rate and carrying capacity?

For my class, I was given a hypothetical situation that uses the concept of Maximum Sustainable Yield to see how much fish I should harvest. I am given an initial population, a growth rate, and a ...
2
votes
2answers
253 views

In search for a video on removing trash cans from the office

I recently saw a video (almost certain it was on youtube) about a university department where they had installed some measures to improve their waste management. One of the measures was to no longer ...
2
votes
1answer
360 views

How different are small fruits and vegetables grocery stores from around the corner from big supermarkets?

When I buy fruits and vegetables in a small grocery store at the corner, I cannot help myself but think that—coming from the idea that "Small is Beautiful"—if I do my shoppings in these kinds of ...
2
votes
1answer
112 views

Is a master's degree in computer science relevant for working in sustainable living?

I'm currently at the end of computer science bachelor and not quite sure what to do after. In a way I'd like to continue with a Master's degree and at the same time help somehow for a more eco-...

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