SteamyTea

My laptop has batteries. In my experience, electrical sockets are never, ever, in the right place.

If you stick a fridge, freezer, A/C unit in a room, plug it in, switch it on, it will heat the room. It cannot cool the room. So the 'running in reverse' is just wrong. If you replumbed it so the cold part was outside the fridge, and the hot part was inside the fridge, it would still heat the room. What a HP does is draw on an secondary energy source, in the case of an ASHP, external air, a GSHP on moisture in the ground. Then, though the magic of science, or science as I prefer to call it, it captures the higher energy molecules and uses that energy. James Clerk Maxwell had a Daemon opening and closing a door between two compartments in a box. The Daemon did not use any extra energy. When it saw a fast moving, and therefore high energy, particle heading towards the door, it opened it and let it through, if it saw a slow moving particle traveling in the opposite direction, it let that though as well. This had the effect of increasing the temperature on one side, and reducing it on the other. This was a thought experiment to show the limitation of Second Law of Thermodynamics. No one has shown it to work at the 100% efficiency level because of entropy. Now this is all getting quite complicated and hard to explain. So just use PV/T=C and explain it with a bicycle pump, or compressor. As you compress the gas it gets hotter, as you release that compressed gas it gets cooler.

But it is not a scientific description, it is a description said by lay people, to lay people. And wrong. Here is the Scientific description. PV/T = C where: P = Pressure V = Volume T = Temperature in kelvin C = A Constant. The scientific description is shorter, easier to say and more correct. Why complicate things.

Here is the one in my Mother's back door. Not had a cat for years now.

And emojis as well

He is a brave GasSafe man then.

Are you going to just jigsaw it in place. Video it for us all.

Move in and shuffle things around until you feel comfortable. I worked in an office where we all had our backs to each other. I put silly pictures on my screen saver, then got told off as it 'lowered the tone of a professional office'.

You are not typical though, you try your hardest not to export. How much would you have got if you had exported half your generation. And how much more would that have been if you lived in Cornwall, or East Anglia.

That is a bit sexiest, there are female gods as well. https://en.wikipedia.org/wiki/List_of_goddesses

Just draw a picture of a person on the foot. The big toe is the head, heel is the feet. Then claim that bruising the tendons is 'breaking down the crystals'. Still, I bedded a blonde by massaging her feet on a first date.

Read this https://www.degreedays.net/ Fairly simple to DIY it all.

Well don't, because it is a misleading description. It works just like a fridge, except the cold part is 'the outside' and the warm part 'is the back'.

Too true, they think it is a 'religion' and all disciplines are basically the same. Good example of a scientist arguing back on this weeks Now Show. 6 minutes and 8 seconds in.

Why not buy another door of similar design.

Sadly not, there are a few on here that struggle to understand it. (and yes, I do see the pun)

As long as you show the monthly output in Kw/h.

I heard, like swimming pools, it is one of the worse things you can have when it comes to selling.

God I hope not.

You can always use more hot water, that makes the numbers look better.

Got visions of a young Barbara Windsor now.

6bit resolution in your case. 10 for the rest of us.

Is it to allow the cat in to warm up the bed. https://youtu.be/T6LFsvoAAVA

For every £1000 spent, and assuming that a PV system will last 20 years, that is £50 a year you have lost. £50 buys between 200 and 350 kWh. If you say kW of installed solar cost £1000 and yields 1MWh/year, that is potentially a saving of £140 to £240 a year. So take away the £50, that is potentially £90 to £190 a year saving. So maybe the trick is to only install a small amount of PV, say enough to heat your DHW demands for half the year, rather than over install and feel you are loosing money because you cannot utilise it all. (I used 14p and 24p a kWh as my import figures).

FFS. An app for a bath. An app to lock kids in their rooms sounds better. https://inews.co.uk/news/tesla-app-outage-leaves-drivers-locked-out-cars-1311237