SteamyTea

I knew that, and have pointed it out to people that park along a street with them. Their defence 'I did not know that, are you sure, there are not any signs'.

The $ to £ exchange rate makes a difference as well.

We are already doing that, only got to look at the fraction of electricity that come from RE and compare it to a decade ago. Other areas, such as transport, have also made efficiency improvements. I think the trouble with this crisis is that we did not react in time i.e. Februray when the signs of a Russina invation where clear. I think we need to tough this winter out, while shifting production capacity from 'trickets' to RE equipement. One thing that the British public will learn, is that we can do with a lot less.

The Watermead. Was a barmaid there call Sorrel there who had her big toe stictched onto her hand as a thumb.

Shall we call it just over double that, £60bn. Or about £1000 per UK resident. Now that would give me £1k to improve my house, my neighbours £3k. Taking the 6 houses where I live, that would be £15k. Now with little money spent I have got my usage down to about 4 MWh/year, so allowing for higher occupancy, say our mean usage is 5 MWh/year, so 30 MWh/year for the 6 houses. 15,000 [£] / 30,000 [kWh] = £0.5/kWh. Short term, subsiding the energy bill, is probably cheaper. (remember I doubled the estimate)

Im asking? I used to live next to the Watermead developement (Aylesbury) when the widened the River Thame into a lake. Years of flies in the spring ans summer until th rest of the wildlife moved in. @CharlieKLP If you want really want to know how long it takes CO2 from wood burning to be reabsorbed, count the rings in the logs you burn, then add some. So a 1 kg log, with 10 growth rings, would yeild about 3 kWh of useful thermal energy, an hour or so in most peoples houses in winter. 10 years of growing, to last an hour. The other aspect, that is often forgotten, is that trees take up a lot of land, much more than PV for the same annual energy output. Most trees in the higher latatudes will have a solar energy to thermal energy converstion rate of around 0.25%, PV around 10%. If we were to run the world, at its current power usage of approximately 2 kW, then all the biomass on Earth, that includes ocean and people, would last about 400 days. Though I suspect that Scorched Earth policy would choke us all before the first month was out.

Don't tell the vegans they are chocking the planet. These are the UK supermarket items with the worst environmental impact Researchers trained an algorithm to estimate the environmental impact of 57,000 products sold in the UK and Ireland to help consumers make eco-friendly choices ENVIRONMENT 8 August 2022 By Adam Vaughan Meat has a bigger environmental impact than most other products in the supermarket E W Brown/Alamy Avoid the supermarket aisles piled with cheese, quiches and pies. That’s the message of an analysis that found they fare worst for nutritional quality and environmental impacts among thousands of food and drink products sold in the UK. And if your priority is curbing carbon emissions and water use, avoid the meat and fish shelves too. So far, most studies assessing the environmental footprint of food have focused on the impact of agricultural commodities such as beef or soya, rather than the lasagnes, tofu and other products that shoppers often buy. Where research has focused on consumer products, it has usually been for a small number of them. In a bid to bridge the gap, Michael Clark at the University of Oxford and his colleagues analysed more than 57,000 food and drink products sold in the UK and Ireland. The team took the ingredients data from eight retailers, including major supermarkets Tesco and Sainsbury’s. However, precise figures on how much of each ingredient is in each product were only available for around a tenth of them. To estimate the rest, Clark and his colleagues trained an algorithm on the known products and used it to predict the composition of the unknown ones, helped by the fact that UK regulations mean ingredients must be listed in descending order of quantity. Finally, the team linked all the ingredients to an existing database of environmental impacts, including emissions, land use and water stress. The results may come as no surprise: meat, fish and cheese products had the highest environmental impact. Desserts, pastries and savoury pies came next. Fruit, vegetables, bread and sugary beverages had the lowest burden. For the most part, there was an overlap between low environmental impact and good nutrition, a further analysis showed. Solving the world’s problems Rowan Hooper at New Scientist Live this October Clark concedes that none of this is mind-blowing, given what we already knew from past research. “The major advance is not that beef has high impacts, fish has high impacts, cheese has high impacts. It’s the fact that you can start getting these impact estimates for products that people are purchasing, which then has a lot of knock-on implications,” he says. One of those is eco labels, which a growing body of evidence shows can steer consumers to make greener choices. However, retailers have struggled in the past with the scale of the challenge. In 2012, Tesco stopped trying to add carbon labels to all its products because it would take centuries to assess them all at the rate it was managing. Clark’s approach points the way to doing such labelling at scale. He is thinking about how to eventually turn the data into an app that could be used either by shoppers or by retailers wanting to reduce their environmental impact. “We’ve made that information available in a way that means people can start making informed decisions,” he adds. The main limitation of the new research is that it doesn’t account for different sources of the same ingredients, such as beef produced in the UK or imported. For example, according to the UK Climate Change Committee, UK beef emissions are 14 per cent lower than the European Union average. “The paper provides a lot of value by making the environmental impacts of foods more tangible and applicable for consumers,” says Hannah Ritchie at Our World in Data. “Previous studies mostly focus on the impacts of broad food categories – such as maize, wheat or legumes.” She thinks the study is a step towards eco labels in supermarkets. Journal reference: PNAS, DOI: 10.1073/pnas.2120584119

Probably from burning timber, which, apart from beign highly pollution, takes a lot of land area. Mainly because there is no real definition of ECO. I saw a company that rented clasic cars claiming to be ECO as they did not have to buy new cars. Maybe, and probably given bum information. Who was the environmental consultant, and did they show their workings?,

Use that in conjunction with a local heat probability density function.

No mention that the south facing windows face my back wall and hardly see daylight then.

Where they now. Two things about aerogel. It is a dessicant It is espensive Our @DamonHD fitted it to his timber frame place a fair few years back. He may well know more about it then most.

What ever the (expletive deleted) that means. Could claim that my shed is eco as it is timber, insulated and has south facing windows.

I just see a waste of spce between the non PV friendly roofs. And flies from the pond, until it is balanced (ask me how I know about this problem).

A litre of heating oil has around 10 kWh of energy, add at least 20% for efficiency losses. A kg of timber has about 4.5 kWh, but add 40%, but as it will shorten your life, maybe not so bad. An ASHP at CoP 2.3 will use 1MWh of electrical energy. So oil will use 2.8 MWh, timber 3.2 MWh. Multiple them by the going rate if the source price.

All I see is a dust trap

Have you considered Plinth Heaters. https://www.screwfix.com/p/tcp-uph201ss-plinth-mounted-fan-heater-silver-2000w-500-x-100mm/348KR Quick check, I meant to link to the plumbed in one's, not the electrical ones, but you get the idea. https://kitchenheaters.co.uk/product/kph-1500-classic/ Maybe in conjunction with Skirting Radiators. https://www.discreteheat.com/thermaskirt/products-and-information/overview.aspx

When I started lecturing, it was as a user of IT, not someone that was a trained person, or someone just thrown in due to lack of staff. In the early days I was teaching the ECDL. Basic stuff. My colleagues used to do the interesting stuff first, so Word, Excel and PowerPoint. I started with File Management. Never had to find where a student had left something. Payed dividends when doing Access, a files inside a file, but not called that. My students understood it.

Tricky one. As heating is exponential, time is important. But at the same time, the bigger the temperature difference, T1-T0, more energy is transferred at the start. So transfer efficiency is higher, because standing losses are lower. Now if say all the heat, the old word for work, which is really just energy, leaks out the object in a fixed time, say 18 hours, then bring it up to T1 quickly probably does use less, if you consider that below T1 it is of no use, think DHW. I have often wondered if, when using a ASHP, if it is better to start with a lower flow temperature, but higher efficiency, then ramp up the flow temperature, while taking a hit in the efficiency. Or just keep the flow temperature the same.

I make it. Your old Super8s I converted are doing well. "Show them on a Tuesday night, the Wendsday Wank they call them" (Don Logan, Sexy Beast) Whole new meaning for 'hardware compression techniques'.

Now there is a thought, I had not thought of. The boxed in downpipe joins the stud wall. Think it is easy to access from the loft. Excellent.

Never given it a long trial. Maybe I should. See what happens. Been using an almost non foaming PU. Seems pretty good. https://www.sealantsandtoolsdirect.co.uk/everbuild-lumberjack-pu-wood-adhesive-30-minute-310ml-box-12

Was still in the West Indies then. Had a B&W Tele, but only for 2 hours a night, 3 nights a week. Snorkeling and SCUBA diving were much better entertainment.

Was it early 70s as it does not jog any memory.

Had a bit of 5/8th marine ply to hand, nice and sturdy and allowed me to get the twist out, near enough. Leaves a gap on the other side that I may fill with 3 layers of twin walk polycarbonate sheet. Should help the U-Value. Working in getting the place a lot more airtight this year. Investigating the loft this coming week to see what I can do up there. I get a draft coming down the stud wall and out the electrical socket. So that must be making the whole walk colder than it should be. Ply and PU adhesive are my best friends at the moment. It is hard to make a house airtight when 100+ MPH winds are not unusual.

Then that works out at 27p/kWh with the SEG. A penny shy of the cap. They know how to price these installations.