View Full Version : Converting BTU/h to Tonns?
Xeon th MG Pony
03-25-2006, 03:11 PM
Ok I need to find the formula to convert a BTU/h Messurment to Tonage
IE: 6,000BTU/h = 1 Ton; 3,000BTU/h = 1/2 Ton...
I have a compressor rated for 4,240 BTU/h at 20F; -6.67C; 266.49K,,, that puts it just barely above a 1/2Ton ability but I want to find the exact level...
Here are the full specs should they be of any use:
Copeland RSN2-0050-IAA Compessor
115v /1PH /60Hz
Medium tempitur R-12 compressor
4,240 BTU/h at 20F; -6.67C; 266.49K
RLA-9.0A
850 watts
600Ml Minerol Oil
n00b 0f l337
03-25-2006, 03:22 PM
BTU vs Tonnage what does Tonnage tell you that BTU doesnt
Xeon th MG Pony
03-25-2006, 03:42 PM
makes it easier for attatching TXVs as they are labled in Tonns, besides it will be good to learn how to do the conversions in any case.
and alot of things are rated in Tonns, so being able to convert to BTU will tell me wether they are worth salvaging.
While I'm here, can any one tell me any extra info on the compressor, I found pressious litle info on it via searches, it's an old beast but resiliant!
wdrzal
03-25-2006, 03:50 PM
12,000 btu = 1 ton
Xeon th MG Pony
03-25-2006, 04:34 PM
Ok So 12k= 1; 6k= 1/2; 3k = 1/4? but what is the conversion formula?
skirms_fr
03-25-2006, 04:44 PM
no formul , just 12k btu = 1 ton as wdrzal said
n00b 0f l337
03-25-2006, 04:49 PM
Is there a correlation between Tons and HP?
Xeon th MG Pony
03-25-2006, 07:10 PM
I'd have to say cylinder displacment as it relates to capacity if any thing.
Well I'll have to make one! I'm rusty on my math any way lol good way to try n sharpen it off.
(1 / 12,000)*X btu/h = T%
Where X = Your BTU rating
T5 = Tonnage in a percent
So my compressor is 35% of a ton! now how to convert a %age to a fraction lol
Blaster
03-25-2006, 07:12 PM
Is there a correlation between Tons and HP?
1 HP = 2544 BTU's/Hour
n00b 0f l337
03-25-2006, 07:21 PM
No way thats correct.
Xeon th MG Pony
03-25-2006, 07:24 PM
seems to fit, but if it's wrong then well have to rethink it, and thats why I posted it for others to confirm it works or not, I'm not shure the BTU was listed right I dubt I have a 2+- HP compressor!
well I ran my formula back wards and it hit dead on to within the second decimal point
n00b 0f l337
03-25-2006, 07:25 PM
Cant be. Or I'd have a 3hp rotary here.
Xeon th MG Pony
03-25-2006, 07:27 PM
well nOOb then we are very lucky! lol you got a 3Horse and I scored a 2Horse lol
Carlz0r
03-25-2006, 07:29 PM
Cant be. Or I'd have a 3hp rotary here.
Which one did you get from that guy?
n00b 0f l337
03-25-2006, 07:34 PM
Rechi SR161.
2 of em, I may get some more.
Carlz0r
03-25-2006, 07:35 PM
Rechi SR161.
2 of em, I may get some more.
Ah. I got the SR131.
[XC] MarioMaster
03-25-2006, 07:45 PM
This was on the back of my capillary tubing box:
http://img113.imageshack.us/img113/8864/btu6hj.jpg
Xeon th MG Pony
03-25-2006, 07:52 PM
odd my post didn't post!
Ok so closest to 35 percent is 1/3 which sits nicely between 1/4 and 1/2 Tons So I think it will handle 1/2Ton TXV no problem,, Albeit a bit underpowered,, as it is leaning more towards that then the 1/4 one
wdrzal
03-25-2006, 07:55 PM
That number is correct but your compressors arn't as big as you think, Keep thinking!!! and reading and figure out were your going wrong.
Xeon th MG Pony
03-25-2006, 07:58 PM
I have no idea how meny Horse my compressor is nore do I care I have enough info to size my system, I'll use an R-12 like gass or I'll get some R-12 this spring cleaning time how ever should you choos to enlighten me it would be well recieved...
However BACK ON TOPIC! Plze
Is my lil formula correct? seems like it providing the rest of the numbers are right and I read them correctly!
n00b 0f l337
03-25-2006, 08:08 PM
I thought it was 1/2hp.
Carlz0r
03-25-2006, 08:12 PM
That number is correct but your compressors arn't as big as you think, Keep thinking!!! and reading and figure out were your going wrong.
This is probably a really bad guess, but is the 1hp=2544 BTU/h for recip compressors?
Xeon th MG Pony
03-25-2006, 08:14 PM
if so it'd explain why I was able to pull -21C with air in the system using R-290 lol the compressor is a brute but I'm willing to wager in reality it is around 1/3Hp or some where around there
n00b 0f l337
03-25-2006, 08:33 PM
Maybe he meant 12544
wdrzal
03-25-2006, 08:35 PM
1hp = 2544btu/h for any thing heres somes hints: energy is mutualy covertable, also don't confuse electrical data with cooling data
also I explained this many times here on the forum.
[XC] MarioMaster
03-26-2006, 05:49 PM
Has anyone seen my post? 1/2 hp = 5,000-6,500 btu's, 1 hp = 9,000-10,500 keep in mind this is approximate.
Ssilencer
03-28-2006, 08:55 PM
There is a really nice little program to convert anything (well, almost) you want, called "convert" :D
http://img140.imageshack.us/img140/2696/convert1gr.jpg (http://joshmadison.net/software/convert/)
Give it a try guys
Xeon th MG Pony
03-28-2006, 09:05 PM
Awsom thanks!
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