seer shocked

[beenthere]

Originally Posted by Learn_HVAC

English is not my first language.However, If you provide me the idea and information I will write it.

You'll reading after I'm done writing. If you approve we shared with everyone.

Or just tell me what books you had been reading on Seer.

You got mail.

[Learn_HVAC]

Originally Posted by dan sw fl

GREAT : > HVAC Systems Design Handbook
________ By Roger W. Haines


You probably won't need another book.

I just Google it and they have Ebook. Awesome

It's about 21 chapter and around 504 page.

[Learn_HVAC]

Originally Posted by beenthere

You got mail.

Here:

Tell me if you got, so I could delete it.

[beenthere]

Does that mean the email address in your profile is not good.

I already sent an attachment to that one. And i resent it to the one you posted.
And then deleted the address from your post.
Please keep the one in your profile current. So you don't have to violate site rules.

[Learn_HVAC]

Originally Posted by beenthere

Does that mean the email address in your profile is not good.

I already sent an attachment to that one. And i resent it to the one you posted.
And then deleted the address from your post.
Please keep the one in your profile current. So you don't have to violate site rules.

Oh..The email address in my profile is for school and classes material. The one I post here is personal email.I check the personal often.


I already had that books. This the books I try to understand yesterday. This book is like learn new language.

Anyway, forget about me write the Seer page. It probably take me long time to understand it. Thanks

[Learn_HVAC]

quick question.

Want to make sure this fact are correct.

Seer rate does not apply to Package window ac unit. Right? EER rate only apply to window unit right?

It only apply to central air conditioner and Heat Pump for cooling power.

I had been reading so many seer info. It's confusing trying to understand how they came up with these number and how accurate in current environment condition.

If you have a 23 seer unit and the installation is bad. The unit itself wouldn't be 23 seer right? due to bad installation. Right?

I had the AHRI books and reading it.

Thanks advance for the explanation

[Andy Schoen]

Originally Posted by Learn_HVAC

Air Conditioning and Refrigeration Institute came up with this rating

Actually, the Department of Energy came up with the SEER rating, in 1979. ARI/AHRI included it in their standards some time afterwards.

[Learn_HVAC]

Originally Posted by Andy Schoen

Actually, the Department of Energy came up with the SEER rating, in 1979. ARI/AHRI included it in their standards some time afterwards.

I read it somewhere. It said Air Conditioning and Refrigeration Institute designed or came up. Anyway, thanks for the correction.

[gary_g]

Originally Posted by beenthere

That is correct. But its applied to the entire year. So its more of an average.
EG:
At 95 outside, you won't be getting 11 BTUs per watt.
At 80 outside, you'll be getting more then 11 BTUs per watt.

I'm sure gary will post the rating temps for SEER soon.

I just saw the "Bat Signal" in the sky

From 2008 AHRI Standard 210/240 Performance Rating of Unitary Air Conditioning and Air Source Heat Pump Equipment:

Pages 89 and 90:
SEER calc for a single speed compressor w/fixed speed indoor fan:

SEER = EER (at 82F ambient) x PLF(.5)

where PLF(.5) = Partial Load Factor = 1 - (.5 x Cd) where Cd is the Cyclic Degradation Coefficient.
Basically, it's the EER at 82F ambient adjusted by fudge factors.

Pages 89 - 94:
SEER calc for a single speed compressor and variable speed indoor fan:

SEER = EER over a weighted average range of "bin" temperatures x fudge factors.

The bin temps and their weighted averages are as follows:

67F----21.4%
72F----23.1%
77F----21.6%
82F----16.1%
87F----10.4%
92F----5.2%
97F----1.8%
102F---.4%
-------------
Total = 100%

Note that the 3 lowest ambient temps (67F, 72F, and 77F) make up over 66% of the value of the SEER calc.

Take care.

[udarrell]

Gary G, those SEER Ratings don't make any since because, unless there are humidity problems, most of us don't need cooling until it reaches +82-F ambient, & for many even much higher.
---
However, responding to the original query, - in the name of full disclosure, I would never sell a condenser rated at 13-seer as a 14 system, because the buyer will believe he bought a 14-SEER Label-Rated condenser. The Warranties can also be a lot different

Take Goodman's 13-seer vs their 14-seer condensers' - the 14-seer has a Copeland Scroll compressor, the 13 doesn't. I wouldn't sell or buy a condenser without a Copeland Scroll compressor matched with a TXV metering device on the evaporator coil.

Every feature should be explained accurately to the customer before they buy the equipment. Satisfied customers are the only kind to have.

I would never push or sell equipment based on seer rated savings! If you look deep into the seer scenarios - IMO, SEER ratings are highly over rated, - Darrell

[Ed Janowiak]

Originally Posted by gary_g

I just saw the "Bat Signal" in the sky

From 2008 AHRI Standard 210/240 Performance Rating of Unitary Air Conditioning and Air Source Heat Pump Equipment:

Pages 89 and 90:
SEER calc for a single speed compressor w/fixed speed indoor fan:

SEER = EER (at 82F ambient) x PLF(.5)

where PLF(.5) = Partial Load Factor = 1 - (.5 x Cd) where Cd is the Cyclic Degradation Coefficient.
Basically, it's the EER at 82F ambient adjusted by fudge factors.

Pages 89 - 94:
SEER calc for a single speed compressor and variable speed indoor fan:

SEER = EER over a weighted average range of "bin" temperatures x fudge factors.

The bin temps and their weighted averages are as follows:

67F----21.4%
72F----23.1%
77F----21.6%
82F----16.1%
87F----10.4%
92F----5.2%
97F----1.8%
102F---.4%
-------------
Total = 100%

Note that the 3 lowest ambient temps (67F, 72F, and 77F) make up over 66% of the value of the SEER calc.

Take care.

This provides a bench mark, nothing more. You seem as if you don't like it, what would you propose in place of this current standard?

Have you read about the standard that will replace it? IMO the regional ratings will just make it more confusing to consumers.

[udarrell]

Ed J, - tell us more about the proposed regional ratings.
Any good links? - Darrell

[amd]

Take Goodman's 13-seer vs their 14-seer condensers' - the 14-seer has a Copeland Scroll compressor, the 13 doesn't. I wouldn't sell or buy a condenser without a Copeland Scroll compressor matched with a TXV metering device on the evaporator coil.

Goodman R410a 13 seer units use scrolls.