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0answers
18 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
votes
0answers
14 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
0answers
13 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
90 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
41 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 (...
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?
5
votes
3answers
228 views

Organic & natural (maybe edible) alternatives for Pre Shaving cream, foam, oil etc?

From some old school yoga & ayurveda folks I've heard of the following for shaving: Raw Milk - I haven't tried this as yet but hope to do so when I get some unheated/ unpasteurized milk. It can ...
1
vote
2answers
43 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 ...
1
vote
1answer
25 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 ...
2
votes
1answer
24 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
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 ...
7
votes
6answers
206 views

Is global population growth ignored in sustainable energy discussions because it makes any effort seem futile?

We (I'm in EU, Netherlands) are trying to reduce CO2 emissions, and many other regulations (nitrogen, pfas) have been devised to make sure we don't make our planet uninhabitable for humans. But I don'...
0
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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
votes
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 ...
6
votes
2answers
477 views

How to monitor energy use in existing office building without submetering?

Our office occupies one floor of a 4-story, one hundred year old building. We are making tenant-level improvements to our space, and are interested in lowering and monitoring our energy use, but are ...
2
votes
1answer
30 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
votes
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 ...
3
votes
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 ...
11
votes
1answer
329 views

What is the most sustainable choice to write on a whiteboard?

I write a lot on a whiteboard and I would like to find a sustainable alternative to traditional (disposable) whiteboard markers which are what I'm using right now. I was thinking of getting a ...
1
vote
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 ...
1
vote
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....
1
vote
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 ...
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
vote
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 ...
1
vote
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 ...
6
votes
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 ...
0
votes
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 ...
0
votes
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 ...
2
votes
1answer
68 views

Can I use 2.5kW solar panels to power 2kW rated grid tie solar inverter?

Can I use 2.5kW solar panels (10x 250 watts) to power 2kW rated grid tie solar inverter? Will anything blow up? Panels: 10x 250W, 36V panels Inverter: 2kW with max input voltage: 500V any help is ...
2
votes
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 ...
1
vote
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
votes
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-...
3
votes
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 ...
2
votes
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 ...
4
votes
2answers
128 views

What to do if a small amount is left over in the toilet after flushing?

Apologies in advance for a disgusting question. I share a bathroom with someone, who has complained that after I flush the toilet, not all the waste gets removed. When I flush once, 95% of the waste ...
5
votes
1answer
118 views

How can I figure out what's using so much electricity in my home?

I recently moved into a new home with 2 other housemates (joining 1 who already lived there) and our combined bill for electricity is far higher than I expected. Now we're using just over 40 kWh per ...
2
votes
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 ...
2
votes
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 ...
2
votes
4answers
108 views

How can an architect design a building to reduce landfill usage by occupants?

I'm currently working on a project with an organization that has four major goals for all of their facilities: Reduced energy usage Increased solar energy use Reduced water consumption Reduced ...
4
votes
1answer
48 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 ...
5
votes
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 ...
0
votes
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 ...
2
votes
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 ...
4
votes
1answer
57 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
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 ...
5
votes
4answers
9k views

Can alloy wheels (for a car) pay for themselves through fuel savings?

Magnesium alloy wheels (aka mag wheels) are desirable to car enthusiasts due to an increase in performance, but with reduced weight there would also be a fuel saving. Obviously prices and fuel ...
1
vote
2answers
106 views

What is the most sustainable choice for a domestic hot water system?

We currently have an ailing 14 yr old solar hot water installation. A few plumbers have given us the same story: due to the age and general condition of the system, it makes more sense to replace it ...
7
votes
2answers
136 views

Are any large restaurant chains pursuing better alternatives to recyclable packaging?

Yesterday Kraft Foods announced that by 2025 all of its packaging will be recyclable. (Note that while they include "reusable" and "compostable" in the announcement, they talk almost exclusively about ...
11
votes
4answers
361 views

How much wood can I burn sustainably, carbon neutral and in an ecologically responsible way from a forest?

While wood can - in theory - be a carbon neutral fuel, in practice burning wood creates a huge carbon debt and it may take a long time for all the carbon released by logging, soil degradation and so ...
7
votes
1answer
313 views

Is a sump tank necessary for my proposed aquaponics system?

I am designing an aquaponics system for my basement. I am thinking about one large fish tank approximately 3500 gallons. The grow beds will be above the fish tank and consist of twelve 45 gallon ...

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