![]() The air-conditioner helps to keep the room cool when outside temperature is very high by removing heat from the room maintained at low temperature. The same principle is applied to the air-conditioner and heat pump also. This does not happen automatically, we have to supply electricity which is used to run the compressor of the refrigerator. In our refrigerator, the freezer is maintained at low temperature by removing the heat from it and throwing it to the atmosphere which is at higher temperature. This is what exactly the second law of thermodynamics says. In the reversed Carnot cycle, the work is supplied to the cycle, and the heat is transferred from low temperature reservoir to the high temperature reservoir. ![]() In this cycle heat is absorbed from the high temperature reservoir and released to the low temperature reservoir and the work is produced. The original Carnot cycle corresponds to the heat engines in which work is produced. The second law of thermodynamics says that heat can flow from high temperature reservoir to low temperature reservoir only, however, if you want to move the heat from low temperature to high temperature reservoir, then the external work has be supplied. Another important application of second law of thermodynamics is found in refrigerators and heat pumps, which are based on the principle of reversed Carnot cycle or reversed Carnot theorem.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |