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2
votes
1answer
59 views

Are there long-distance water pipelines emanating from the North American Great Lakes region? Why or why not?

Are there long-distance water pipelines emanating from the North American Great Lakes region? Why or why not? Under what circumstances would this be an ecologically reasonable way to provide water to ...
2
votes
1answer
57 views

Embodied energy of tap water

There is a significant chance that this has been covered on SE, but I haven't yet found anything similar enough for my taste (see related questions, below). Question: How could I go about coming up ...
1
vote
0answers
22 views

DIY Powdered Biodegradable Soap

I love Dr. Bronners unscented liquid soap! I can use it as dish washing liquid, body wash, laundry detergent, and shaving soap. And it's biodegradable so I can use it on the trail when backpacking! It ...
2
votes
2answers
63 views

Will this work to prevent my pipes from freezing?

I live in an apartment in the US midwest, and during the winter my pipes freeze unless I trickle my faucet. I think that the point at which it freezes is in a difficult-to-access exterior wall on the ...
2
votes
0answers
47 views

How do 'Eco' vs 'Quick' modes compare for washing clothes?

A lot of washing machines offer different washing modes which change various run settings: Cotton (or 'General'), Towels, Bedsheets, Wool and so on. Most even have settings for 'Eco Mode' - which (if ...
0
votes
1answer
32 views

How much coil do I need to heat a given length of pipe (as a function of x,y,z)?

I'm imagining heating some water pipes using heating coils similar to these. Under various conditions, would I need to apply almost continuous lengths of heating coil to the entire length of pipe? Or ...
3
votes
0answers
56 views

How to hatch eggs at home without a bulb-based incubator?

I came across some videos on YouTube where they used a home-made incubator to hatch hen eggs. The system was nothing fancy: A cardboard box with a light inside Some aluminum foil near the bulb (...
2
votes
1answer
32 views

Help me safely mod my freezer

I want to connect my freezer to an external thermostat like this to maintain a higher temperature than it otherwise could. Are there any thermostats or other control devices that would keep the ...
1
vote
1answer
39 views

Why do the best energy star freezers have higher capacity and lower rated power consumption than the best refrigerators?

The title says it all; I'm looking for any qualitative information that can help me. Freezers: https://www.energystar.gov/productfinder/product/certified-residential-freezers/details/2255167 ...
3
votes
1answer
38 views

Can I insulate my refrigerator to improve efficiency?

Any "reasonable" methods would be appreciated. I have heard that this can be done but I'm dubious that it would do much. Maybe if I put polyethylene on the right bits?
1
vote
3answers
72 views

Keep my hands warm while working on a laptop?

I want to keep my hands warm(er) while working on a laptop in a cold room. Would it make sense to take a polar fleece blanket, fold it in half, sew together the two edges that are perpendicular to the ...
4
votes
1answer
34 views

How to keep my tankless water heater safe in a cold room?

I have a room in my apartment that can sometimes get around 40°F (4°C), and that's where my new tankless water heater is stored. Should I take any special precautions to keep my pipes from freezing or ...
3
votes
1answer
46 views

Most energy-efficient way to keep my pipes from freezing without tearing up walls/floor?

I live in a second-floor apartment in the US Midwest. For a few weeks per year, I have found that I need to turn on the baseboard heater in my kitchen in order to prevent the pipes in the kitchen and ...
3
votes
1answer
99 views

Most efficient cheap heating system for small apartment in the US midwest?

I live in the US Midwest and am looking to upgrade from my current old baseboard heaters to a more energy-efficient solution. Any ideas? I am already well advanced on a parallel project of home ...
1
vote
1answer
27 views

What is the difference in CO2 emissions between new and old double decker buses?

The Euro 6 bus WHTC test cycle here shows a value of 4.0 carbon dioxide and the Euro 5 ESC & ELR test cycles show a value of 1.5 CO. https://en.wikipedia.org/wiki/European_emission_standards It ...
2
votes
0answers
29 views

Help me estimate my annual refrigerator power consumption from this data sheet?

I am shopping for refrigerators and looking at this model. Feel free to let me know if that's stupid. But my main question is this: I'm trying to come up with a moderately conservative power ...
2
votes
1answer
28 views

How does the EPA estimate annual power consumption for refrigerators?

I'm trying to get a simplified idea of how the EPA estimates annual power consumption for refrigerators, e.g. here. There are a number of reasons why I want to know this, but there are three big ones: ...
0
votes
1answer
37 views

How much of glacier ice in the Alps already melted?

Various news media articles claim that Two-thirds of glacier ice in the Alps 'will melt by 2100' https://amp.theguardian.com/environment/2019/apr/09/two-thirds-glaciers-alps-alpine-doomed-climate-...
0
votes
1answer
16 views

How do I find an efficient AC-DC converter for low-power applications?

My understanding is that AC-to-DC converters each have their own "sweet spot" in which they achieve their rated or advertised maximum efficiency. I want something with maximum efficiency at ...
2
votes
1answer
50 views

Should I turn off my Gas Water Heater if I will be gone for 3 days?

I have a gas water heater. If I go out of town for a week during warm months, I've been told that I will save energy if I turn the heater off before I leave. Would that still be true if I was going to ...
2
votes
1answer
36 views

How to test accuracy of my Kill-A-Watt or similar device?

I have a used Kill-A-Watt power meter and want to see how accurate it is. In my "conventional" middle-class USA apartment, am I likely to have any electricity-consuming devices that I could ...
1
vote
1answer
48 views

Can I use a “normal” thermometer in a refrigerator?

My refrigerator has a rheostat that I want to turn up to save energy. I'm trying to figure out whether I need to get a dedicated refrigerator thermometer. I have a digital and a mercury-based ...
3
votes
0answers
44 views

Is there a neutral LCA comparing wood to composite materials?

I have seen competing information about whether it's a more sound environmental choice to choose real wood or composite decking materials. Different conclusions are drawn depending on whether the ...
5
votes
1answer
43 views

What will happen if I leave my freezer off most of the time?

I only use my freezer to freeze ice packs, which I only use about an hour every two days. Because of this, I plan to turn my freezer off (or to the hottest setting) most of the time, and then reduce ...
4
votes
1answer
45 views

Is using multiple MPPT controllers with a solar panels array, to mitigate effect of shadows a myth?

So my installation is for a sail boat. There's a lot things like rigging sails etc, that can create shadows on part of the array and this is constantly moving around. I've seen a lot of debate online ...
2
votes
2answers
47 views

How to get a small volume of freezer capacity with high efficiency and low cost?

I have a big refrigerator/freezer and barely use any of the space. I also don't necessarily need to keep things cold all the time, as I mostly use it to freeze ice packs and extend the freshness of ...
0
votes
1answer
56 views

Did subsidies for suburban development exist?

I found an article claiming that In the 1970s and 1980s, Dallas emerged as a model of the kind of economic success government-subsidized suburban sprawl could generate Is that true? Did people get ...
2
votes
1answer
43 views

What's the current price of power to gas fuel?

I've been curious about power to gas technology. I've read up on the immense energy losses as you split water to hydrogen and then using the Sabatier reaction to generate methane. Do we know given the ...
4
votes
1answer
63 views

Is there a single-use product that is more sustainable that its multi-use counterpart?

This may be more of an academic question and less of practical relevance but I hope to have some input from this site nevertheless. In my opinion, multi-use products are always more sustainable than ...
3
votes
1answer
80 views

Carbon footprint of people using public transport vs private vehicles in USA

On an average day, people using cars generate more polution than the people using public transport. Say for example: Person A uses a personal car. Person B doesn't have a car and it uses public ...
1
vote
1answer
41 views

How to identify the rating of my electrical panel

Recently I got a bid from a solar company and they said I don't need to upgrade my electrical box since it is rated at 125 amps, and for that value, I can install a 7k system based on calculation here....
3
votes
4answers
66 views

Looking for eco friendly biodegradable toilet cleaners for removing toilet rust, either home-made or commercial

The toilet rust is a very tough stain. I have tried: Vinegar alone Lemon juice Baking soda with vinegar: works a little bit I am asking for other options that are biodegradable. Please let me know ...
4
votes
1answer
53 views

Should I close vents to unused rooms?

It’s 40°C at dusk during a summer heat wave. My electric utility is threatening blackouts and begging people to conserve. I have a couple unused rooms in a detached suburban house that don’t need air ...
6
votes
1answer
144 views

After how many litres does Soda Stream get more sustainable than bottled sparkling water

Soda Stream is advertised as a more sustainable alternative to buying sparkling water in bottles. The main selling points are that no water filled bottles need to be manufactured, transported and ...
1
vote
1answer
54 views

Biodegradable Food Packging

I am trying to figure out an application for a biodegradable packaging material a found out about. It is made from old or used potatoes or corn starch. I was thinking of using it in Pizza boxes to ...
1
vote
0answers
50 views

How do I create a cheap solar still?

I am trying to create a cheap and easy way to distill water. I learned through some research and talking with people that making a solar still is the best way. I really would like a cheap solution to ...
4
votes
1answer
41 views

Shading percentage to cause hot spots

I'm designing a solar plant over the roof or a huge building for my company. Now the roof has a lot of obstacles, Shafts, pillars, AC equipment etc. I have a couple of questions that I could really ...
2
votes
0answers
26 views

Are there examples of Greywater reuse between buildings?

Are there any documented cases or examples about reusing greywater from a particular building in another adjacent building? For example: Using treated greywater from an office building for toilet ...
1
vote
3answers
88 views

Would moving baby trees help with carbon sequestration?

There are areas in the country I live in where deforestation has been extreme. I'm thinking of going to transplant smaller trees from the neighboring forests. Does this make sense? Could I end up ...
5
votes
2answers
82 views

How much weight would a wireless charging system add to an electric bus?

Wireless charging requires a number of 'receiving charging pad's and a 'management module' and I imagine there will be additional wiring. How much extra weight does this add to an electric bus?
4
votes
2answers
93 views

How to correctly get rid of human poop?

I want to live alone in a floor above where I'm currently living cause I don't stand my family, only inconvenience, there is nothing not even tiles, I don't mind the discomfort but, how can I get rid ...
1
vote
0answers
25 views

Best solar cooker type for dim sunlight?

The commercially available solar cookers seem to use a variety of different technologies. I have seen ones that use mirrors, ones that use evacuate tubes, and other things, in different configurations....
3
votes
2answers
103 views

Is Marine Plywood better than plastic for the environment?

I work for a brewery and we have recently started using 3mm thick 140x90mm Pump Clips on our taps instead of 2mm thick PVC Pump clips. These are the little plaques we see when we order a beer at the ...
2
votes
0answers
38 views

Renewable garden watering system - 12v battery system (solar recharged) to ensure there is 50l of water at 20ft twice a week

I have a load of water butt rainwater storage linked to my gutter downpipes for my garden water needs, but I can't stand around waiting to fill watering cans from taps on butts, so occasionally (once ...
2
votes
1answer
84 views

In what ways can I upcycle my old, unused refrigerator?

I have an old fridge that has not been used in years, but I am hesitant to get rid of it as it is an antique. I would prefer to upcycle it into something else but am lacking in imagination. Does ...
2
votes
0answers
49 views

Do timber buildings remove carbon from the atmosphere in the long run?

One of the advantages of timber buildings is regularly said to be their ability to effectively remove carbon from the atmosphere, through long term carbon storage. Wouldn't this require the timber ...
3
votes
1answer
134 views

What plastics are safe/useful to melt?

I have seen a number of videos that talk about melting down HDPE and/or LDPE for craft projects. Some say these types of plastic are safer to some extent. I would like to do some crafts as well that ...
3
votes
0answers
41 views

Where can I find the paper “Life cycle sustainability assessment (LCSA) for products and processes.”

I am currently studying circular economy theory. More specifically life cycle sustainability assessment theory. And I notice that a paper in this area that presents a lot of citations is Finkbeiner, ...
1
vote
0answers
40 views

Where can I find graywater reuse quality thresholds for different uses? [closed]

I'm having a hard time finding specific up-to-date sources that contain clear guidelines and regulatory quality thresholds for graywater reuse. The only thing I could find was the EPA 2012 report and ...
4
votes
3answers
94 views

Is manual sorting of household waste more effective than mechanical separation?

In theory people can separate waste much better than a machine, since they have more knowledge about the waste itself. In practice, with all my good will, I find that following the directions for ...

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