A Math Problem for Electricians

[Dr.Destructo]

I am VERY bad at math.....especially anything over the basics.

I need help on finding out how much it will cost to run an AC unit per day.

Here is the info I got......

Power Supply 115 V
Cooling Watts 824 W
Rated Cooling Amps (AHAM) 7.3

9.5 cents per kwh
according to the info I got

5,000 BTU
Portable AC unit


Here is the product in question, as I couldn't get any answers from the company itself.

MAP05R1WWT

The Midea 5,000 BTU ComfortSense portable air conditioner delivers fast, effective cooling for spaces up to 150 square feet while simultaneously providing fan and dehumidification functions in any home, bedroom, office, or cabin; creating a relaxing and comfortable environment.

www.midea.com

 

[jotathought]

• Convert the power usage to kilowatts
• Calculate the daily energy consumption
• Calculate the daily cost

The rough estimate using your parameters is about $1.88 / day, assuming it's running 24 hours each day.

 

[Dr.Destructo]

• Convert the power usage to kilowatts
• Calculate the daily energy consumption
• Calculate the daily cost

The rough estimate using your parameters is about $1.88 / day, assuming it's running 24 hours each day.

$1.88 per day????? SERIOUSLY????

Thank you for the help!!!!

 

[jotathought]

$1.88 per day????? SERIOUSLY????

Thank you for the help!!!!

Want the math conversions?

 

[Dr.Destructo]

Want the math conversions?

Oh no thanks.

Was trying to figure this out for a friend who bought one of these.

 

[Muhammed]

I am VERY bad at math.....especially anything over the basics.

I need help on finding out how much it will cost to run an AC unit per day.

Here is the info I got......

Power Supply 115 V
Cooling Watts 824 W
Rated Cooling Amps (AHAM) 7.3

9.5 cents per kwh
according to the info I got

5,000 BTU
Portable AC unit


Here is the product in question, as I couldn't get any answers from the company itself.

MAP05R1WWT

The Midea 5,000 BTU ComfortSense portable air conditioner delivers fast, effective cooling for spaces up to 150 square feet while simultaneously providing fan and dehumidification functions in any home, bedroom, office, or cabin; creating a relaxing and comfortable environment.

www.midea.com

I highly recommend not to get that type of unit.

A window unit would work much better.

 

[luiza]

I need help on finding out how much it will cost to run an AC unit per day.

Here is the info I got......

Power Supply 115 V
Cooling Watts 824 W
Rated Cooling Amps (AHAM) 7.3

9.5 cents per kwh
according to the info I got

5,000 BTU
Portable AC unit

Goggle tells me that it has no idea what language that message is in.
Imagine it is an extension of something like Quantum theory .

Must also ask Horsey Horse in case it is in Animalese .

 

[the watcher]

the use (consumption) rate is only one component of your electric bill. There are also fuel surcharges, capacity charges ( cost to maintain generation capacity) , fixed or base rates, surcharges, etc that are not reflected by the usage kwhr/$ formula. Look at a monthly bill to get an idea of this, every power supplier has their own regulations.

 

[luiza]

the use (consumption) rate is only one component of your electric bill. There are also fuel surcharges, capacity charges ( cost to maintain generation capacity) , fixed or base rates, surcharges, etc that are not reflected by the usage kwhr/$ formula. Look at a monthly bill to get an idea of this, every power supplier has their own regulations.

Give us an equation .
What about something along the lines of E = MC2 ?

 

[the watcher]

I can give you a calc for usage: amps of unit x voltage x 1000 x hours used x Rate ( $ per kwhr). That's one component. It should be easier to explain string theory than electric rates. You need to read your bill for local explanation, How to Read Your Electric Bill

 

[para bellum]

I can give you a calc for usage: amps of unit x voltage x 1000 x hours used x Rate ( $ per kwhr). That's one component. It should be easier to explain string theory than electric rates. You need to read your bill for local explanation, How to Read Your Electric Bill

Think you mean divide by 1000 to convert watt-hours to KWh...

7.3A for 5K BTU's is not very efficient though. My 12K BTU Soleus portable pulls 10A.

 

[the watcher]

You are correct. Getting old ain't for pussies. That's for single phase power, 3 phase brings in the .732 factor.

 

[Sherlock Holmes]

I am VERY bad at math.....especially anything over the basics.

I need help on finding out how much it will cost to run an AC unit per day.

Here is the info I got......

Power Supply 115 V
Cooling Watts 824 W
Rated Cooling Amps (AHAM) 7.3

9.5 cents per kwh
according to the info I got

5,000 BTU
Portable AC unit


Here is the product in question, as I couldn't get any answers from the company itself.

MAP05R1WWT

The Midea 5,000 BTU ComfortSense portable air conditioner delivers fast, effective cooling for spaces up to 150 square feet while simultaneously providing fan and dehumidification functions in any home, bedroom, office, or cabin; creating a relaxing and comfortable environment.

www.midea.com

The power used by the unit is 824W, which is 0.824KW (this is the rate at which it consumes energy)

You pay 9.5c for one kwh, so you pay 9.5 X 0.824 cents/hour for every hour it is running (the compressor is running).

So its about 7.8 cents/hour that it runs, lets say it runs 50% (e.g. it comes on twenty minutes then shuts off twenty minutes) of the time, you're looking at 12 X 7.8 = 94 cents/day.

Call it a dollar a day, if the weather's hot it'll run for longer periods per hour and cost more than a dollar/day, if its cold it'll run for shorter periods per hour and cost less than a dollar/day.

Is this a window mounted unit?