On Tue, 22 Oct 2019 20:53:32 +0100, danny burstein wrote:
In op.z92sfnanwdg98l@glass "Commander Kinsey" writes:
[snippp... regarding the brand
There's a _minor_ feature/annoyance/get used to it... change.
With a standard, say, 10,000 BTU unit, if you left it
off then came back to a 90 degree F room, then turned
it on, you'd get a nice blast of cool air in your face
30 seconds later.
With the LG's, since they're inverter units which measure
how much cooling is needed, they start off with just
a bit of chilling... so you don't get that refreshing
and icy flow.
Strange, you would think they'd adjust their power by how much
too hot the room is. If it's marginally over, they should run
on low power, but if the room's way too hot, they should give
it a good boost. Are you sure it's working right?
What on earth would make it think a lot of cooling is needed
then? Does it wait to see if it can cool the room in an hour,
then only later ramp up the power? Pretty daft really, it's
nothing like what you'd actually want.
Not quite that bad. It'll start off with just a slight bit
of cooling, and then ramp up and up over the next couple
of minutes.
Haven't measured it exactly...
Why would it do that? Room temp = 90, desired temp = 70, therefore run at full speed surely?
So yeah, when you come in and first stick your head in
the (just turned on...) air flow, you'll only get a hint
of refreshment. But 30 seconds, then a minute.. then two.. later
it'll be quite a bit more.
I'm lazy, I set heating/AC to run all the time. I pick a temperature for the house and have it set at that 24/7. People say that wastes money, but not much. Turning the heating or AC off while you're out just means the temperature difference between inside and outside (as in how much heat or cold you lose) is maybe 10C instead of 8C. So I waste 25% at those times. Who cares?
- It's got to see if the lower output will be enough. If the room's
pretty small, and the walls aren't hot [a], then yeah, 5,000 BTU
out of the rated 15,000 will be cooling it down quickly. If
the room's bigger, then etc., etc.
I wouldn't design it like that. I'd make it run slowly if the temperature difference was small, and fast if the temperature difference was large. Clearly if it's small it's just topping up, but if it's large it's because you've just got in and you want a lot at once.
[a] one annoying feature in general (and that's The Killer in
long term heatwaves like Chicago [b] a decade ago...) is that the
building infrastructure (walls, etc.) heats up a _lot_ during
the daytime and keeps beking the interior at night.
Same thing, kind of, when coming into an apartment that's been at
95F for a couple of days. The unit can cool the air going through it,
but that air quickly gets reheated as it flows along the walls.
Wouldn't happen if you just left the unit on all the time.
[b] make that two and a half decades... have you gotten to that
point in life where you think something happened last week and
it was six months ago, and a memory from last year is really
a decade?
https://en.wikipedia.org/wiki/1995_Chicago_heat_wave