On 07/05/2021 03:15, Rod Speed wrote:
Fredxx wrote
Rod Speed wrote
Fredxx wrote
Rod Speed wrote
Fredxx wrote
Rod Speed wrote
Fredxx wrote
Rod Speed wrote
Fredxx wrote
Rod Speed wrote
Robin wrote
jon wrote
What is this nonsense, heat is dissipated by radiation,
convection or conduction so how come efficiency becomes a
problem.
As I think I said the last time this came up, my physics is
nowhere near good enough to decide "by inspection" whether a
vertical or horizontal radiator is better at transferring
heat to a room.
Yes, you clearly have that problem. Plenty of us dont.
I don't know why you say that,
Because its true ?Â* Novel concept I realise.
as the chimney effect can sometimes be very good at providing
a good airflow.
They both have that. The difference is that the
horizontal radiators have the air moving over
much less of the radiator so the radiator has
more cold air moving over it and so you will
see more heat moving out of the radiator
into the airstream.
So at first sight it's not obvious which orientation is best.
Only for those who dont have a clue about the basics.
Only those with hindsight will think differently.
Wrong.
And (like some others)
Who have the same problem.
I saw too many /known/ unknowns - e.g laminar flow?
temperature of air exiting top? chimney effect? - quite
apart from the possible unknown^2
None of that matters. What matters is the vertical distance.
There is no chimney effect with a radiator.
The gap between the radiator and the wall and radiator height
will determine air speed over the radiator.
But that isnt different with the two types of radiator.
What matter is the distance that the cold air at the bottom of
the radiator moves over before it gets to the top of the radiator.
If you think differently, please feel free to cite an
explanation why this isn't the case.
Just did. And dont need a cite, just an explanation.
You haven't explained why a larger temperature difference within
an enclosed space such as a flue or the space around a radiator
won't create a bigger draught when we know the opposite is
generally true.
This paper for instance:
Â* http://cit.edu.ly/wp-content/uploads/2018/02/15-091.pdf
University of Zawia, hardly one of the world's great universitys.
A preferred reference over one individual whose chosen speciality
is claimed to be chemistry.
Another of your bare faced lies. Your trademark.
My trademark is to cite the source of my accusations.
You clearly didnt with that allegation just above,
you pathetic excuse for a lying bull**** artist.
I did, just you don't like the fact or remember saying it.
You confirmed you were a chemist in a thread titled "Ethanol".
I did nothing of the sort, you pathetic excuse for a lying bull****
artist.
And you provided no cite for that lie either.
No lie, just senility on your part:
We'll see...
Â* https://www.homeownershub.com/uk-diy...-3102366-3.htm
and I thought you had a chemical background?
Thats not saying I was ever a chemist, ****wit.
No, but it was what you said. On an even earlier thread you eluded to
being a chemist, hence my comment.
My BSc did indeed major in chemistry.
My research degree was in physical
chemistry and involved no chemistry,
only electronics and computing.
Then you were had with being offered a physical-chemistry course.
I can read, too.
And they only use aspect ratios up to 2 and no verticals, so none
of that paper is relevant anyway.
It's infinitely better than any cite you've made to backup your
claims.
No cite required with the basic physics at the front of the
radiator which is where most of the heat comes from and
it isnt a claim, its a fact with the length of the path of the
cold air from the bottom of the radiator, you pathetic
excuse for a flagrantly dishonest lying bull**** artist.
It is a fact that the aspect ratio of a radiator as well as the
height of the room vs radiator heigh determine the efficacy of a
radiator.
The aspect ratio is covered by the terms horizontal and vertical with
the
radiators being discussed, you pathetic excuse for a lying bull****
artist.
No BS,
Nothing but mindless pig ignorant bull****.
a well reasoned argument
More bare faced lies. You cant even manage to
work out that that paper you waved around is
actually discussing the gap between the radiator
and the wall, not how effectively the front of
the radiator towards the room is heating the air
convecting up the front of it which is the main
way in which the radiator is heating the room.
To you facts you can't counter are always bare faced lies.
you can't answer except with abuse.
Everyone can see for themselves that you are
lying thru your ****ing teeth, as you always do
when you have got done like a ****ing dinner,
as you always are. Your trademark.
Quite, everyone can see the article and can see wider is not always better.
But wider vs taller isn't always an optimum choice.
More drivel with the radiators being discussed,
you pathetic excuse for a lying bull**** artist.
Quite, the paper was discussing aspect ratios of 0.5 to 2.
But the vertical radiators being discussed
are well outside that, ****wit.
You made an unqualified statement and got found out.
reams of your **** and lies any 2 year old could
leave for dead flushed where it belongs
Yep, another indication of a lost argument.
suggests the optimum aspect ratio of the radiator is highly
dependent on wall height.
Ah yes:
https://groups.google.com/g/uk.d-i-y...m/lwVTe0U-U3YJ