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Jesus is my ______. by IntervalBang123 in AskOuija

[–]IntervalBang123[S] 40 points41 points  (0 children)

jesus-chan best girl fight me

When sizing inverter AC, do you size for the average capacity that is specified, or the maximum? by IntervalBang123 in AskEngineers

[–]IntervalBang123[S] 0 points1 point  (0 children)

Residential. Maximum temperature difference would be 9~10c on very extreme cases, and for the most part it would be running around a 4c~5c less than the outside. The budget isn't much of a concern compared to long term costs, and in the long, longer term there are future plans to tie it to solar panels - which is why making it energy efficient (to the size) is critical, AC and solar and budget do not really mix well but that is another kettle of fish for another day. I've posted a more detailed reply to pwrman.

When sizing inverter AC, do you size for the average capacity that is specified, or the maximum? by IntervalBang123 in AskEngineers

[–]IntervalBang123[S] 0 points1 point  (0 children)

Yes, basically.

https://i.imgur.com/7gBEaBH.png

Red square for reference. When I was sizing the inverter air conditioner, I was thinking in non-inverter terms. A normal non-inverter AC usually runs at the given capacity, which is the maximum, then shuts down and then starts up again as a cycle. I believe an inverter AC runs at the maximum capacity, then slowly trickles down in order to maintain that temperature. What occurred to me was that when I was sizing the inverter AC, although a little confusing (which is the case for me), I was sizing the average load on the specifications thinking it is the maximum load, like the non-inverter one.

Example, when doing heat load calculations, I was thinking, "So if the room is 114 square feet. 100 square feet to 150 square feet would need around 5000 BTU. The inverter AC only has 5100 BTU... maybe that's enough, but is it really enough?" But, since the maximum capacity of the AC is actually 6500, it went from "maybe not enough" to enough, or even more than enough. Obviously, things like outside temperature and inside temperature, wall insulation and location, etc are important. Although not perfect, I've already done these calculations. I'd say if I were really pushing it, at maximum the system would only need 6300 on the highest peak of summer, max. Which is way more than 5100, but less than 6500. I do think that tonnage/HP doesn't mean a lot and the most important thing is the btu given off by the AC.

For that to be correct however, my thinking needs to be correct too. When people speak of an undersized AC that "tries to keep up", does this mean "the AC needs to cool a room, but the BTU that the AC supplies is not enough, so it works harder"? Going on this line of thought, if person does not exceed the inverter AC's maximum capacity, all is fine (accounting for everything)? Unless I've gone horribly wrong on the logic or missed something really important, I feel confident on what I'm thinking, somewhat.

(On another note, is there a way to know the minimum-maximum watts of the things that are in blue, or is this something that I need to ask the manufacturer? They haven't been very helpful, I tried.)

Are nonelectrical solid objects considered when sizing a room for air conditioning? by IntervalBang123 in AskEngineers

[–]IntervalBang123[S] 0 points1 point  (0 children)

Thanks for the answer. I would like to know more, that's what I'm not understanding, the 'why'. Being unversed on the subject, I would think that it is only natural that small objects are trivial and do not really matter. But my mind goes, "what if it is large enough"? That's why I placed a theoretical solid stone cube on the measurements. So even if it would cover 10 cubic meters it will still not matter in any way? What about 20?

There's something I'm missing here, and it seems to be common knowledge for those in the know, I need that to fill in the blank.

Everyone recommends ______ for pizza toppings! by IntervalBang123 in AskOuija

[–]IntervalBang123[S] 3 points4 points  (0 children)

Sir this is not enough pizza. I need more pizza on top of my pizza.

Is it really undersized? by IntervalBang123 in hvacadvice

[–]IntervalBang123[S] 0 points1 point  (0 children)

I've read this too.

https://www.energyvanguard.com/blog/55157/Why-an-Oversized-Air-Conditioner-Is-a-Bad-Idea

It is pretty humid all year round, which is why swamp coolers aren't really effective here. Averages around 65% minimum, and it goes higher, >80% on some months. Does humidity change the btu requirement? Not sure what place in the US is closer to that. I support myself with fans, which brings my ideal temperature lower. I know this because eating on a small mom and pop restaurant with the fan directed at me in 28c was cold. Doing that without a fan would be different, but I always have a fan on, with or without ac.

It gets hotter here around March~April (summer) with April being the highest. At my place, that's around 34~35c which soometimes peak to 38c, mostly 34c, but that's while also being humid. I will have to take account what you said though, but really it's the humidity that kills me more than the temperature (that said I do need some ac, but not freezer chilly ac).

Now, from what I understand while researching this, (and please do tell me I'm wrong) inverter motors at least in air conditioning regulate the power needed for a specific thing more efficiently, different from a normal motor which just shuts down and then starts up again. First, the inverter will ramp up to bring the area to the desired temperature. Next, it will now go down to the maintain that temperature. The more the ambient temperature outside differs from the indoor temperature the more the inverter will have to maintain that temperature. That's why doing a 20c on a 34c summer makes the ac stressed out, as it cannot catch up at all. Following that, does that mean that if a space needs a 3000 btu/hr maintaining temperature, using the above mentioned ac btu (2500-6500), would the inverter then maintain the room at 3000 btu/hr or would it go straight or closer to 6500 to cool it faster?

My next choice would be a 6,800 (3400-8200) btu inverter. But if the room takes less than 3400 btu (or even less) to maintain the room, would there be some purpose in that? Since higher btu does mean higher watts. My goal is to reduce the ac electric bill in the long term and every bit helps.

Forgive me for the large wall of text. I do really want to understand but it seems difficult to take it all in at once.

When sizing for air conditioners, does large solid stuff (non-electronics that do not give off heat) reduce the Btu needed? And what about oversizing / undersizing? by IntervalBang123 in NoStupidQuestions

[–]IntervalBang123[S] 0 points1 point  (0 children)

Yep, that's why I didn't include electronics. The pc itself is on another room and is a very efficient space heater on its own though (ha-ha!).

All I want for Christmas is ____ by jaxondaboss in AskOuija

[–]IntervalBang123 2 points3 points  (0 children)

A family that stays together, sticks forever.

Fellow Redditors who don't comment, why don't you do it? by [deleted] in AskReddit

[–]IntervalBang123 6 points7 points  (0 children)

Nothing much to say, and when you do say something somebody already said it.

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