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Suitable to ask about how to use a particular controller? [migrated]

Is it on-topic here to ask how to set up a particular controller? This is a Resol Deltasol BX controller for my solar hot water. I'm confused by the wording.
4
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0answers
11 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 ...
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0answers
17 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 ...
2
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0answers
52 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 ...
4
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1answer
49 views

How to ensure you are using efficient chargers for cell phones, laptop computers, and other electronic devices?

I recently asked a question regarding a sustainable way to generate white noise. I received a wonderfully helpful comment from Móż (thank you!) in which Móż recommended ensuring that the power source ...
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0answers
24 views

GHG emissions of a parcel in kg/km

I have been set this task, I hope you enjoy! I have to work out the exact amount of GHG emissions of a parcel, by air freight in kg every km. There doesn't seem to be any legitimate data on this, has ...
3
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1answer
36 views

How to create a sustainable white noise generation box?

I would like to create a white noise generation box. I want it to be as sustainable as possible (within reason), as it will likely be used 24/7. My thinking so far is to use an old, unused smartphone,...
1
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2answers
115 views

Why should I buy the brand solar panels when the cheaper ones offer a better power to price ratio?

Following this question, I'm trying to figure out what is the best option for me. Looking at brand products, for example SunPower Maxeon 3 400/410 Wp and SunPower P3 Black 325 Wp, they offer a power ...
0
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1answer
28 views

Effective strategies to use snow for refrigeration in the winter?

Before the invention and commercialization of refrigeration, many homes had an ice box, designed to store a large block of ice to keep perishables cold (from the National Museum of American History): ...
6
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1answer
56 views

Is human energy efficient?

I spent 2 weeks traveling on my bicycle, and usually I was very hungry.. Since I ate a lot of food, I asked to myself if maybe a train (dividing cost between all passenger) was more green than me! I ...
4
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1answer
49 views

Does plastic really degrade in a landfill?

There seems to be a lot of debate about whether, and how, plastic degrades in a landfill. There are many different types of plastic, from polypropylene to polystyrene. With this variety, it seems ...
4
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2answers
59 views

Which energy sources will replace fossil fuels for heating homes in cold climates?

Many countries are looking to phase out fossil fuels for domestic heat and hot water within this decade (see related question). Which alternative energy sources will primarily replace fossil fuels? ...
3
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2answers
40 views

Which CO2 price would make a real difference?

For context: Sweden is said to have the highest carbon price in the world at €110/ton (source). This price only applies to emissions not covered by the EU ETS (about half) which currently trades at an ...
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0answers
21 views

Asphalt (petroleum product) vs cement (carbon emitter) — how to choose?

This answer to another question points out that asphalt, a petroleum product, is used in large quantities. If we as a society want to reduce our dependence on fossil fuels, we will need to find an ...
2
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1answer
33 views

Can the production of herbal supplements (pills) be sustainable?

I have heard testimonies of people with various health conditions in which the ingestion of certain botanical supplements improved their health. Then I see the plastic bottle the supplements came in, ...
2
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0answers
21 views

What portion of the carbon credit market goes to reforestation/forest conservation projects?

In my understanding the supply side of the carbon credit market involves a wide range of different methods to sequester or otherwise prevent carbon from entering the atmosphere (renewable energy, fuel ...
2
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2answers
44 views

What makes swimming pool heat pumps unsuited for home use?

I noticed that heat pumps for swimming pools are a lot cheaper than equivalent heat pumps for home use. What could be the reasons for this? To give an idea, a 16kW monoblock heat pump based on R32 (...
1
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2answers
49 views

Which countries, regions, or cities have banned natural gas in new construction?

Last week, the city of Denver, U.S.A. announced a proposal to ban all new natural gas connections by 2030. From The Denverite: Changes to natural gas rules will come via revisions to Denver’s ...
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1answer
28 views

How much of the car batteries are reused?

If you buy an EV then the batteries last for X years. What happens after that? Are they recycled 100%? Are the companies like Tesla collecting those batteries to recycle? If they are not recycled then ...
0
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1answer
39 views

Are optic fibre based daylighting solutions sufficient for solar panels?

Some daylighting solutions are available in the market that use collectors and large diameter optic fibre cables to transfer sunlight to interiors of residential or underground dwellings. Below are ...
3
votes
1answer
79 views

Any way for microinverter PV array to power a house when the grid is down?

Suppose I'm already heavily invested in microinverter type solar panels -- with the inverter on the panel on the roof. These comply with UL 1741 and will stop supplying power the moment they see grid ...
4
votes
2answers
45 views

Determining carbon reduction vs cost of various home upgrades

I've done some amount of upgrades to my house to reduce my overall carbon emissions, and reading online there are all kinds of suggestions for doing even more: Replace my natural gas water heater ...
2
votes
1answer
113 views

Can Hydroponic products be termed as organic food?

Hydroponics using NFT (Nutrient Film Technique) is heavily dependent on inorganic nutrients. However, modern marketing jargons term the food produced as organic and business model as sustainable. ...
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0answers
42 views

Sustainability of Vanguard?

Does anyone know if the financial organisation Vanguard is engaged in sustainability topics, specifically sustainable finance, being a big financial player themselves?
2
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3answers
117 views

How feasible is a city with no cars and no streets?

Saudi prince, Mohammand bin Salman, announced a future city spread in 170km with no cars and no street. But any place to meet daily needs like schools, medicine and office will not take more than 5 ...
3
votes
1answer
62 views

Is the drain-off water from water purifiers fit for gardening?

I have 3 stage water purifier installed at my home which first filters the water, performs reverse osmosis and then treats it with UV-C rays. The water that is released at stage 2 (RO) is usually ...
2
votes
1answer
85 views

Can furnace condensate water be used for houseplants?

I recently had my old, broken furnace replaced with a high-efficiency condensing furnace. One function of this furnace is that it extracts enough heat from the exhaust gases to condense them into ...
20
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5answers
7k views

Why is there no spring based energy storage?

I'm wondering about kinetic energy storage for homes. Imagine a concrete plate resting on hundreds of firmly attached sturdy springs, and a couple of electric winches attached to the top. To store ...
4
votes
2answers
115 views

Excess solar power

I am wanting to hook up a solar system to my house but don't want to feed back into the grid (for a number of reasons, including legislative bureaucracy and having to change my electricity company). ...
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0answers
36 views

Which countries, regions, or cities have zero emission vehicle mandates? [duplicate]

Today the governor of the U.S. state of Massachusetts announced that starting in 2035, gasoline-powered vehicles will no longer be sold in the state. From the announcement (emphasis added, and a "...
4
votes
1answer
81 views

Are there petroleum products which do not have practical alternative sources?

According to the U.S. Energy Information Agency, about 23 L (13%) out of every barrel of oil is turned into "other products": The other 150 L or so is turned into things which are burned ...
6
votes
1answer
82 views

Is less white paper usually more sustainable?

Copy paper can be purchased in different white tones. The shades of white are defined by the Commission Internationale de l’Eclairage (CIE) and take values from 55 (recycling-grey) to 171 (most white)....
5
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2answers
102 views

Saving energy in the dryer: short and hot, or long and low?

Where I live, cold winters and humid summers rule out line drying for bulky items like blankets and towels for a few months out of the year. When I put them in my electric clothes dryer, which ...
2
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1answer
43 views

Where can I find out about sustainable electronics?

Are there an online resources about brands or outlets? Are there certifications? Wikipedia refers to a 2014 Rank a Brand report about the sustainability of global electronics brands in general. I ...
3
votes
1answer
57 views

How effective are shrink plastic insulation kits for residential windows?

I live in an older home with windows that build up frost in the winter, which indicates they aren't insulated very well. I am thinking of installing kits like these over the windows: However, before ...
7
votes
2answers
69 views

Quantitative comparison of the economics and output of permaculture versus industrial farms

I am new to permaculture but would like to get a better feeling for if and how mid- to large-scale commercial permaculture farms could feed the world. In particular, I am interested in quantitative ...
10
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2answers
193 views

How exactly do the impacts of lithium mining compare to oil extraction over a vehicle's lifetime?

There's been a lot of discussion about the impacts of lithium mining vs oil extraction (here for example). I'd like to quantify this. How do the impacts of mining lithium for one electric vehicle (EV) ...
3
votes
1answer
95 views

Doesn't it make more sense to wrap hot sandwiches with the foil facing in?

You know those hot sandwiches sold in grocery stores (northeast USA at least...) that are wrapped in a foil paper? Wouldn't it thermally make more sense to have the shiny foil facing in? To keep the ...
3
votes
3answers
97 views

Efficiency of delivery services vs individuals travelling to purchase items?

Is it more efficient for a supermarket to send a van round to deliver stuff (eg a weekly/monthly shop for groceries) to multiple addresses, or for those people to drive (locally) to go and get it? ...
5
votes
2answers
95 views

Will planting trees around my house save me from pollution?

If one is living in a polluted city and plants trees around their house, Will it reduce air pollution? What about reducing heat in the summer?
4
votes
1answer
60 views

What is the relative carbon footprint of getting ones media from Netfix or bittorrent

It has been in the news recently that the carbon footprint of Netflix and other streaming services is significant.1.6 Kg of carbon dioxide per ½ hour viewing is on the high side of the estimates, 451,...
4
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2answers
69 views

How can I recycle when my apartment doesn't offer it?

I live in an apartment in an urban area. I would love to be able to recycle, but unfortunately, my building doesn't offer recycling as a service. I've searched for recycling facilities near me, and ...
3
votes
1answer
108 views

Throwing away compostable packaging

When I search about recycling compostable packaging I always find articles about recycling packages to the backyard pit etc. My question is not about that. I just want to throw compostable packaging ...
2
votes
1answer
68 views

Simple solar light system

I've been looking for a simple solar powered lighting system for a carport I just built. I bought these without realizing how small they are: 2 Pack Solar Lights Outdoor. Unfortunately they look ...
5
votes
2answers
75 views

Does oil spilled in backyard contaminate groundwater?

A poster near a recycling station mentions that one liter of cooking oil contaminates 1 million liters of water and suggesting cooking oil recycling. If I spill cooking oil in the dirt of the backyard,...
1
vote
1answer
45 views

What alternatives exist for bean bag filler?

One of my kids has asked for a bean bag for their room. I'm hesitant, mainly because of the styrofoam/plastic filler beans which (I assume) are generally terrible for the environment when they ...
2
votes
1answer
47 views

Efficiently freezing an ice pack once per 48 hours

Question: What are some good electricity-efficient ways to cool an ice pack down to ~5 degrees C once every 48 hours? Background: I am in a warm climate and connected to the grid in a US city. I don't ...
0
votes
1answer
40 views

Callibrate a battery monitor for a ~5yr old 360Ah solar panel installation

I am looking to calibrate a new battery monitor for an off-grid battery bank that's ~5 years old, since the previous battery monitor stopped working recently. I'm not sure how to go about it given the ...
1
vote
1answer
89 views

How to dispose ultra-processed food?

A friend of mine just recently started avoiding any ultra-processed food because of health concerns. However he already had some in his storage room and some have passed their expiration date.This ...
5
votes
2answers
179 views

Water electrolysis for storing energy

When wind and solar generate surplus energy, can it be used to break water into oxygen and hydrogen and to store the gases in liquid form for later use as an energy source? Was this ever tried in any ...

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