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kingbob
LSU Fan
Sorrento, LA
Member since Nov 2010
36474 posts

Calling all HVAC technicians, LSU CM graduates, and Engineers
I am working on two problems for my Mechanical/Electrical class (Prof Spring) and my professor gave us two questions for homework that have little to no corresponding information in the notes or textbook readings that can help to solve it.

1. A 2 ton, air-cooled, DX window unit has a SEER of 14. If the unit operates for 1,800 hours during the summer, how many kWh of electricity will be used?

I know that for every ton of unit, it can cool approximately 12,000BTUH. I also know that 14 seer means it gets 14 BTUs/Watt of energy. the farthest I've gotten is 12,000 BTUH * 2 ton * 1800 hours = 43,200,000 BTU / 14 BTU/Watt / 1000 Watts/kW = 3086 kW

How do I proceed? Do I multiply back by the 1800 hours to get kilowatt hours?

2. How much space would be required for air handlers and the heating-cooling equipment for a 120,000 sf office building?

We simply have no information on this.

The Boat
Duke Fan
Nazi Germany
Member since Oct 2008
85491 posts
Online

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
You have to convert it to gigawatts.

kingbob
LSU Fan
Sorrento, LA
Member since Nov 2010
36474 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
.003086 gigawatts
Ok, now what?

The Boat
Duke Fan
Nazi Germany
Member since Oct 2008
85491 posts
Online

re: Calling all HVAC technicians, LSU CM graduates, and Engineers

kingbob
LSU Fan
Sorrento, LA
Member since Nov 2010
36474 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
but I have to get it up to 88 mph first!!!

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warrencromartie
Florida A&M Fan
Miami
Member since Aug 2013
430 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers

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Carson123987
Texas Fan
Middle Court at the Rec
Member since Jul 2011
53424 posts
Online

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
quote:

You have to convert it to gigawatts.

quote:

kingbob, good luck brah

kingbob
LSU Fan
Sorrento, LA
Member since Nov 2010
36474 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
quote:

kingbob, good luck brah

Lucky for me, my flux capacitor is connected to my DVD player via some tinfoil held in place by chewing gum

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The Boat
Duke Fan
Nazi Germany
Member since Oct 2008
85491 posts
Online

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
Have y'all seen the guy driving a DeLorean around near LSU? It even has the Mr. Fusion on the back.

Is that Germans?

Carson123987
Texas Fan
Middle Court at the Rec
Member since Jul 2011
53424 posts
Online

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
saw one on I10 on a trailer. thats it

The Boat
Duke Fan
Nazi Germany
Member since Oct 2008
85491 posts
Online

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
He was filling up at the Exxon at Highland and Lee.

kingbob
LSU Fan
Sorrento, LA
Member since Nov 2010
36474 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
quote:

He was filling up at the Exxon at Highland and Lee.

I thought where he was going he didn't need roads?

Also, when did Exxon start selling plutonium?

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dewster
LSU Fan
Pittsburgh
Member since Aug 2006
13995 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
There's one that is modified to look like the time machine that has been tooling around Baton Rouge.

I want that car.
This post was edited on 9/16 at 1:16 am

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jimbeam
USA Fan
University of LSU
Member since Oct 2011
44669 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
This does not seem hard at all bob
This post was edited on 9/16 at 1:24 am

djangochained
LSU Fan
Gardere
Member since Jul 2013
11965 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
Bob this is pretty basis stuff for a ME

kingbob
LSU Fan
Sorrento, LA
Member since Nov 2010
36474 posts

re: Calling all HVAC technicians, LSU CM graduates, and Engineers
quote:

Bob this is pretty basis stuff for a ME

Well, can you help me, then? I'm not an ME and this is something we
a. haven't covered in class
b. isn't in our book
c. isn't in our lecture notes
d. due tonight

I really need help.

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