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0answers
6 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
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0answers
10 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 ...
1
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0answers
11 views

How much do I need to trickle my faucet in cold weather (as a function of x,y,z)?

I am told that, in cold weather, I should let my faucet trickle a little to prevent pipes from freezing, especially if some portion of my above-ground pipes are likely to get cold. Are there any rules ...
2
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0answers
38 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 (...
1
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1answer
24 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
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1answer
25 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 ...
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0answers
7 views

How long can I safely store tofu at various temperatures?

I'm talking about store-bought water-packed tofu. I'm sure it depend partially on the expiration date. The main thing I want to know is the highest temperature that I can probably get away with ...
2
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1answer
23 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
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2answers
42 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 ...
3
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0answers
22 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 ...
2
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1answer
29 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 ...
2
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1answer
76 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
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1answer
20 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
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0answers
21 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 ...
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0answers
12 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
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0answers
12 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-...
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1answer
14 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
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1answer
41 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
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0answers
16 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
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0answers
24 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
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1answer
38 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 ...
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0answers
9 views

What do consumers need to know about sustainable supply chains?

For people engaged in sustainability in their work, sustainable supply chains are often discussed. What do consumers need to know about sustainable supply chains? How should this information be ...
5
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1answer
33 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 ...
2
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0answers
14 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
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2answers
41 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
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2answers
47 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 ...
1
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1answer
28 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
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1answer
56 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 ...
2
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1answer
74 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
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1answer
36 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
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3answers
54 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
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1answer
47 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
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1answer
89 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
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1answer
50 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
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0answers
40 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 ...
3
votes
1answer
36 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
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0answers
24 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
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2answers
69 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 ...
4
votes
1answer
42 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?
1
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0answers
34 views

What is Body Shower Milk (common term in Germany)? Is it more sustainable than ordinary shower gel?

It looks like the term is only used in Germany. I tried to search for it and found some hints in a random forum. I do not know how trustworthy this information is. Errr, no. What is sold as "...
2
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0answers
59 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
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0answers
18 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....
2
votes
2answers
60 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 ...
1
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0answers
29 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
83 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 ...
1
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0answers
28 views

Do timber buildings absorb carbon in the long run?

One of the advantages of timber buildings is regularly said to be their ability to absorb carbon from the atmosphere. Wouldn't this require the timber used in the building to not decay, or at least to ...
3
votes
1answer
86 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
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0answers
40 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, ...
0
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0answers
38 views

Are there generally accepted measures for the sustainability of buildings?

There are well known commercial certifications, such as LEED. They operate with proprietary points-based score cards. See here. The ecological footprint of people's lifestyles is regularly measured in ...
1
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0answers
37 views

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

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 ...

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