Plug tops / Plug caps?

[ericmark]

Yes, lamp is the whole fitting, bulb, wick, mantel, tube, etc. is a part inside the lamp.

 

[JohnW2]

Yes, lamp is the whole fitting, bulb, wick, mantel, tube, etc. is a part inside the lamp.

Exactly - which, as I always say, is why I find it bizarre that I am today expected to ask for "a lamp to put into my (table/standard/inspection/whatever) lamp"

 

[JohnW2]

Radiator store heat ...

Yes, but not much, nor for very long.

, but more likely picture windows either side of the living room, single glazed.

Heat losses from room will surely be the same (for given room and outside temps) regardless of whether the air in it has been heated 'directly' or via radiator, won't it?

I will assume there was a leak under the floor, but I simply don't know.

You were seemingly implying that your ducted hot air system 'cost a fortune to run' because it was a ducted hot air system - which, as I said, I couldn't really understand. However, if it cost a fortune to run because it was faulty (leaking) that surely has nothing to do with the tyoe of heating (a 'wet system' which was constantly 'leaking under the floor' might also cost a lot to run ).

 

[ericmark]

Heat losses from room will surely be the same (for given room and outside temps) regardless of whether the air in it has been heated 'directly' or via radiator, won't it?

Oh, what a can of worms you have opened. I have debated this a lot with my son, as to the Myson fan assisted radiator, and if moving air around is good or bad.

If I put sensors around the room, I see some massive differential in the recorded temperature, but this is not the case all the time, so at the moment on the table 20.3°C behind me TRV shows 18°C, near the door, 20.5°C, and TRV 90° to one behind me, 20.5°C. All in the same room. Run a fan and air near windows is same temperature to centre of the room, as to if this is good or bad, not sure. But with the house in question, single glazed windows, so wanted to leave the air next to windows undisturbed, behind long curtains, also the vents, closing them was like the song about the dampers, the heat went into the rooms just the same, and also we really needed a humidifier, I would put trays of water in the air intake. The air was so dry.

The ground floor had ducts underneath it, so air could blow under the house with the air bricks, and I do think a lot of heat lost through the floor.

It was 1978 our winter of discontent, so the electric was turned off I am sure you remember, and the central heating can't run without the fans, so the house got very cold. And no other form of heating. Since then, we have been careful to ensure we don't rely on electric from DNO for heating, last house had a 4.5 kW gas fire in living room, this house an open fire in living room, plus CH is battery backed.

So heat pumps are a non-starter for heating. The labour government actions have ensured that, not that the Conservative government actions in the way they treated the miners was any better.

 

[SUNRAY]

The ones melting metal (or glass) are called furnaces too, the ones generating steam for heating homes seem to be called boilers. At least that’s what I‘ve gathered from decades of reading US books and DIY forum posts.

Since 2002 my work has been mostly controls and the majority of that has been commercial heating/cooling /ventilation etc. Having worked for/with a number of west pond engineers/consultants I think I'm safe to say the term furnace has been used by all of them where we would say boiler, also I think possibly the same for cooler Vs chiller.

Yes but were they actually producing steam or merely water vapour I`m sure most folk would want to know?

I'm sure it would quickly convert to water vapour not far round the system.

 

[JohnW2]

Oh, what a can of worms you have opened. I have debated this a lot with my son, as to the Myson fan assisted radiator, and if moving air around is good or bad. .... If I put sensors around the room, I see some massive differential in the recorded temperature ...

Yes, potentially true. I was thinking/talking about situations in which all of the air in a room was heated to a uniform temp, in which case I can't see why it would matter whether it had been heated 'directly' or via radiators. However, if one takes steps to (as far as possible) keep heated air away from the places of greatest potential heat loss (usually windows), one can obviously change that situation. With ducted heated air one is presumably essentially stuck with all of the air being similarly heated, and the same with radiators if combined with effective fans. As you go on to say ...

.....Run a fan and air near windows is same temperature to centre of the room, as to if this is good or bad, not sure.

It's not so much a case of 'good or bad' as of 'what one wants' (in terms of uniform heating of room, or otherwise).

Having said that, I'm not sure that, in practice, radiators (without fans) are actually going to be allthat much different from blown air since, although the radiators could theoretically be positioned as far as possible from windows etc, in practice by far the most common location is actually 'under the window'!

It was 1978 our winter of discontent, so the electric was turned off I am sure you remember, and the central heating can't run without the fans, so the house got very cold. And no other form of heating.

Yes, I remember such times well, but it didn't impact significantly on me in terms of heating (or cooking - and we also had torches and candles!), since at that time I didn't have 'central heating' of any sort!