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Korean Job Discussion Forums
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Kenny Kimchee
Joined: 12 May 2003
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venus envy
Joined: 25 Jul 2007
Location: chicago
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 Posted: Wed Aug 19, 2009 1:12 am Post subject: |
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| how large of a space will this cool? |
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pkang0202
Joined: 09 Mar 2007
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| Posted: Wed Aug 19, 2009 3:11 am Post subject: |
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| Its a 6 pyeong A/C unit, so it'll be adaquate for a really small one-room. If your place has room for a bed AND a sofa, then this unit will be too small for you. You would need a 8 or 10 pyeong unit. |
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bassexpander
Joined: 13 Sep 2007
Location: Someplace you'd rather be.
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| Posted: Wed Aug 19, 2009 3:52 am Post subject: |
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| pkang0202 wrote: |
| Its a 6 pyeong A/C unit, so it'll be adaquate for a really small one-room. If your place has room for a bed AND a sofa, then this unit will be too small for you. You would need a 8 or 10 pyeong unit. |
I disagree... made due with a 6 pyong in a 2 bedroom (albiet small) older style apartment. It just took a bit longer to cool stuff down.
This will handle you average officetel just fine. We've got a Hauzen similar to that, although colored, in the bedroom. It really cools stuff down well. |
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pkang0202
Joined: 09 Mar 2007
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| Posted: Wed Aug 19, 2009 6:12 am Post subject: |
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| bassexpander wrote: |
| pkang0202 wrote: |
| Its a 6 pyeong A/C unit, so it'll be adaquate for a really small one-room. If your place has room for a bed AND a sofa, then this unit will be too small for you. You would need a 8 or 10 pyeong unit. |
I disagree... made due with a 6 pyong in a 2 bedroom (albiet small) older style apartment. It just took a bit longer to cool stuff down.
This will handle you average officetel just fine. We've got a Hauzen similar to that, although colored, in the bedroom. It really cools stuff down well. |
I disagree. Usually in an Officetel, an entire wall is basically glass windows, single paned. You would have to have that sucker running constantly. Yes it would get it cool, but you would be running it longer than you have to. You also gotta figure, if you are cooking at home them the heat from the burner/stove is also going to heat up the place. Don't forget the heat that comes off of TV's, Computers, lights, refrigerator.
I had a 6 pyeong AC unit in a small 9 pyeong One-room villa a couple years ago. I didn't even have any big windows. That 6 pyeong unit was running from the morning to night to cool the room. My electricity bill was pretty high.
If I had gotten a 8 or 10 pyeong AC unit instead, I would probably only have to run that AC for a few hours, turn it off, and then turn it back on again a couple hours later.
The AC unit for sale is 2.4kW. 2.4kW / 0.125 = 19.2 square meters.
19.2 square meters / 3.954 square meters per pyeong = 4.8 pyeong.
The AC that is for sale should be used for a 4.8 pyeong room. Like I said before, the AC has to compete against heat generated from the TV, stovetop, appliances, refrigerator, etc...
Now, if it were a BEDROOM only without ANY appliances then you can use this formula:
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| In bedrooms you will require 0.080kW - 0.110kW per square metre of floor area |
2.4kW / .080 = 30 square meters.
30 square meters / 3.954 square meters per Pyeong = 7.5 Pyeong That AC would be sufficient to cool a good sized bedroom. Since a bedroom does not have many things that generate heat.
Note I took the lowest value for the numbers. If you use the median value than the size of the room the AC can cool is even SMALLER. |
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bassexpander
Joined: 13 Sep 2007
Location: Someplace you'd rather be.
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| Posted: Wed Aug 19, 2009 6:57 am Post subject: |
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I know what the numbers say, and you're right by the numbers... but in my opinion, it's a bit of a ratings scam to get you to purchase more aircon than you need. That, or there is a lot of extra leeway built in for all situations (for example to provide for those who live in an apartment of the same size, but on an upper/hot floor facing sunshine). Sometimes I think they rate these things assuming Koreans will leave the windows cracked open (and they often do!).
I've bought 2 multi-room aircons in the past few years, and lived in at least 5 apartments with different aircons of between 5 and 9 pyong, and from my experience, they are typically underrated.
For example, our stand unit is rated at 16 pyung. We use it to cool about 75% of our 33 pyong (35, if you count the entryway) house. We were advised that this was the lowest-sized stand we could get away with in our house, and I'd say that's about right. We usually close a door to whatever room we don't need to cool, so we save energy. The only difficulty I have is getting air to the back corner room, which doesn't receive airflow in any way. This is not a big issue if the aircon is on high. At lower speeds, if I put a fan blowing air into there, it circulates and cools fine.
And as I mentioned before, I used a small 6 pyong (may have even been a 4 to 5 pyung... the school went el-cheapo used) to cool a small 2 bedroom basement place.... took about twice as long to cool the place down, but it did work. The nice thing about it was that I could run it a lot more, since it was small and sucked-up very few watts compared to other places. Note, that it worked best when able to point the airflow toward the bedrooms.
Given my experience, and my wife's experience (she purchased an aircon in the past, as well), we decided it was well worth it to purchase an energy-efficient model that uses less energy overall, and is rated at about the lowest we can get away with in our house. We not only save on the energy efficiency mode (works best in the bedroom with the 6 pyung unit mounted there as part of the multi), we also save because we're not running a massive aircon pulling far more watts to cool our place. I spent a lot of time looking at power usage of the different models before we bought.
Your quotes of the numbers are very correct, PK. It's just been my experience that you often don't need as much power as is suggested, provided that you keep your aircon properly maintained (filled with freon, or whatever they use now).
If you were stuck on a hot floor facing a lot of sunshine, then I'd think differently and go with something rated to match. If you live in a basement, for example, then you can get away with a lower pyong rating for sure.
One more thing... it's also been my experience that having "more" aircon doesn't help you at all once you turn the thing off. When you turn it on to re-cool, it just keeps sucking that much more power. If they are big, they still suck more energy. Sure, you could ride the aircon on/off button all day long, but who does that?
The last 1-room I had included a used 5-pyong Carrier model that I left running almost constantly for a solid month. My electric bill only went up 40,000 won (although the school paid it in that place -- not me). That efficency had a bed, a big-azz TV, and a sofa. It was a 10 pyong place, not including outside measurements. That aircon was plenty. |
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Kenny Kimchee
Joined: 12 May 2003
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| Posted: Wed Aug 19, 2009 7:34 am Post subject: |
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| Whatever. It cools a 12x12 room just fine. |
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Kenny Kimchee
Joined: 12 May 2003
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| Posted: Sat Aug 22, 2009 6:57 pm Post subject: |
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| Bump |
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pkang0202
Joined: 09 Mar 2007
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| Posted: Sun Aug 23, 2009 11:32 pm Post subject: |
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| Kenny Kimchee wrote: |
| Whatever. It cools a 12x12 room just fine. |
Touche.
Great deal at 150,000w. Good luck with the sale OP. |
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