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# Entropy decreasing in a mechano-caloric effect of superfluid Helium-4, and its application in energy generation

Submit Time: 2017-01-23
Author:
Institute: 1.Wuhan Institute of Physics and Mathematics, CAS;

## Abstracts

 In this note, we point out that a case of mechano-caloric effect of superfluid $^4$He actually establishes a temporary entropy-decreasing process, which was unnoticed in the past. We show that this process can be used to convert thermal energy from the environment to useful energy in principle, and therefore, the second law of thermodynamics is not an universal law.
From: 余永乐
DOI：10.12074/201611.00914
Recommended references： Yongle Yu.(2017).Entropy decreasing in a mechano-caloric effect of superfluid Helium-4, and its application in energy generation.[ChinaXiv:201611.00914] (Click&Copy)
Version History
[V2] 2017-01-09 15:02:06 chinaXiv:201611.00914v2(View This Version) Download
[V1] 2016-11-29 11:35:14 chinaXiv:201611.00914v1(View This Version) Download
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