What is the heat removal in J/min

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Homework Help Overview

The problem involves calculating the rate of heat absorption by an air conditioner based on its energy efficiency ratio (EER) and power consumption. The context is centered around thermodynamics and energy transfer, specifically in relation to heating and cooling systems.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to calculate the heat absorption using the formula H = EER * P and expresses concern over the accuracy of their result. Other participants question the formatting of the answer and whether the use of scientific notation is necessary.

Discussion Status

The discussion has revealed that the original calculation was correct, but there was a misunderstanding regarding the required format for the answer. Participants are exploring the implications of presentation style on the acceptance of the answer.

Contextual Notes

There is mention of potential issues with significant figures and formatting preferences, which may affect how the answer is perceived or accepted in the context of the homework assignment.

Chad Jensen
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Homework Statement


What is H, the rate of heat absorption by an air conditioner with an EER of 8.3 that operates at 1800 W? Recall that 1Btu=1055J. Express your answer in joules per minute.

Homework Equations


H/P=EER

The Attempt at a Solution


H=EER*P
H=(8.3 BTU/HR/W)*(1800 W)
H=(14,940 BTU / hr)*(1055 J / 1 BTU)*(1 hr / 60 min) = 262,695 J/min
This is wrong and I am not sure why. I thought maybe I was using the wrong number of sig figs, so I tried 260,000 J/min and 263,000 J/min. Anybody that can help me see what I am doing wrong, I would very much appreciate it.
Thank you
Chad
 
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Perhaps leave out the comma ? I get same as you ...
 
I put the comma in for clarity when I posted to the forum. I didn't use one when I input the answer. I just thought maybe I missed something but it doesn't sound like I did. Thank you
 
The answer was correct, but for some reason it wanted it in scientific notation. 2.63*105 It has never mattered before if it was scientific or regular, it must just have been a fluke. Thank you
 
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