SteamyTea

Not just the total amount, it is how the power is delivered. If evenings are just a light or two and a TV. Hardly worth getting £3k of storage for a 100W load.

Kim There are no easy answers to your question. But there is basic school physics. ASHPs and jumpers would be normal in any house. Why would you want, in a UK winter, to be dressed in Cornish National Dress (even in Devon). If people want a very hot house, then fit a larger heating system. The way you design, and orientate your house can have a large effect in the energy usage, it is all about surface area to volume ratio. PV on a roof will absorb about 20% of the energy hitting it, helps to keep the rise in temperature down. Cooling can be combined with MVHR. MVHR is usually designed for minimum requirements, but there is nothing to stop you oversizing so that a usable amount of heating and cooling can be delivered/dispersed. An ASHP can cheaply and reliably deliver DHW to 50⁰C. Plenty hot enough for a bath. Just a case of sizing the storage cylinder correctly. Really just a case of sitting down and working with the numbers. Dull and boring, but pays dividends.

Probably no big shocks till autumn, then, hopefully, we will have the LNG supply from the UA and USA sorted out. Though it does depend on what Hungry does.

Gas prices have.

GQT mentioned railway sleepers today. Something I forgot to mention earlier, but thought it was common knowledge. https://www.bbc.co.uk/sounds/play/m0016y5p 26 m 38 s in Just after Snickets.

That should really be ignored in payback calculations. If there is an alternative that uses lower energy i.e. clothes line, airing cupboard, then those numbers should really be ignored.

Obtuse I like it when the angles of a triangle don't add up to 180°C. Makes it more real.

It is easy to see why we do not have much hydro power in the UK. We just don't have the topology for it.

And carbon, hydrogen, oxygen, probably iron, titanium dioxide, cobalt, copper in trace quantities in the ink. Everything we can see and touch is chemicals.

Should really be just the standby usage. So multiply by the fraction it is not producing.

Grow leeks. Go to seed. Push up daiseys.

We get people down here who have the surname Kent. All proud to be ex pikeys. They always pay with cash.

60 ÷ 7 = 8.6 Seems reasonable.

Just look up the thermal conductivity of the materials used, divide into their thickness, then divide into 1. Round up

Mine haven't. Blaming @pocster as he weed on them when I wasn't looking. Then ran away.

If the person who is benefitting directly does not pay, then we all pay. I still do not understand why I am, in effect, being forced to have a loan, along with meter rental going up, to pay for people that cannot pay their bills.

The ones that have a panel from a domestic fridge as the collector. They frost up and then absorb less, just like a freezer does. Ice has a thermal conductance of 2.25 W.m-1.K-1 at -5°C. Air, at the same temperature, is 24 mW.m-1.K-1

A constant 50W could be useful. But 100W would be very useful. 2 kWh a day is my non E7 usage.

Probably not. But you do not have to use pipework all the way. It is just an airtight conduit that you need. This is why, like PV, it is worth designing it in. For ages I have been wondering how to plumb in (as a retrofit) MVHR. Then realised I only need to go from the loft (where the unit will be) to upstairs. The living room is connected to the landing via the open plan stairs (I (expletive deleted)ing hate this, makes the living room a corridor). As I have a stud wall that runs from loft down to ground floor level, and an airing cupboard with the DHW cylinder in it, directly above kitchen, all I have to do is fit one extract pipe in kitchen to loft, then let the stud wall act as the other conduit for the incoming air.

Was -16⁰C here once. https://www.cornwalllive.com/news/cornwall-news/times-cornwall-recorded-extreme-weather-6532125

Only doubles the flow though, but takes up more space. Bedrooms are one place you want to extract air from. I have never understood why people sleep with windows closed, and heating off, then in the morning, turn the heating on and open the windows 'to air the room'. Too late by then.

MVHR uses relatively small bore pipes and low flow rates. If you really want to shift thermal energy about, and control it better, fit larger pipes. Double the diameter and you quadruple the mass flow rate at the same velocity. Means you can shift 4 times the energy as well. Carefully designed at the start, it need not be visually intrusive. With improved airtightness you have to consider condensation. Think of a airtight plastic box. It can sir there all day and night with no condensation forming, but drop the container temperature a few degrees and the water vapour condensed in the container. This is basically what an airtight house is. To get around this, external air is introduced, this, generally in the UK has a lower absolute amount of water vapour in it than internal air (2 people produce about 4 kg of water vapour a day, dogs a lot more relatively). The old way to keep condensation under control was to crank up the heating, this keeps the water as a vapour, not a liquid. Trouble with this is that higher temperatures mean higher losses, not only through air losses, but also through conductance through walls, floors, roofs, windows and doors. Small houses have a disproportionately higher surface area to volume, so when measured as losses by total floor area, the numbers look bad.

That would be a waste.

Just a case of changing mass to force. Then remembering that force at a distance is torque. And a moment is a place, not a spot in time. And materials fail differently. Holes can reduce forces. CT1 puts it all right.

Not just CO2 though. Wood burners emit particulates at a higher level than diesel engine. Still, everyone I know with wood burners are more than happy for me to come around, in my EURO4 diesel car, and smoke a pack of Marlboro in the front room. They encourage it in fact.