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- TL;DR Summary
- How can one machine only consume 3,600,000 joules of electrical energy to transfer 10,550,560 joules of heat energy without broke the laws of thermodynamics?
Hi,
I was reading a newspaper article on the energy efficiency of commonly used air conditioners in homes. Then a doubt arose when the article informed me that there are air conditioners that have an energy efficiency of 10 BTU/watt. That means a classic 10,000 BTU/h air conditioning machine will consume only 1,000 watt of electrical power during that amount of time.
Using joule as unit for both, this means that in 1 hour the machine will only consume 3,600,000 joules of electrical energy to transfer 10,550,560 joules of "heat energy" from my room to the outside.
I noticed that the machine is not creating heat from the electrical energy, but transferring the energy using electrical energy. But I am still in doubt about how is it possible. How can I get a zero-sum from that? How is this possible without violating the laws of thermodynamics?
Sorry for english mistakes and thank you for trying to help me to think about this question.
I was reading a newspaper article on the energy efficiency of commonly used air conditioners in homes. Then a doubt arose when the article informed me that there are air conditioners that have an energy efficiency of 10 BTU/watt. That means a classic 10,000 BTU/h air conditioning machine will consume only 1,000 watt of electrical power during that amount of time.
Using joule as unit for both, this means that in 1 hour the machine will only consume 3,600,000 joules of electrical energy to transfer 10,550,560 joules of "heat energy" from my room to the outside.
I noticed that the machine is not creating heat from the electrical energy, but transferring the energy using electrical energy. But I am still in doubt about how is it possible. How can I get a zero-sum from that? How is this possible without violating the laws of thermodynamics?
Sorry for english mistakes and thank you for trying to help me to think about this question.