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Can I read Energy Pumps and the Second Law on EtoBox?
Energy Pumps and the Second Law by R.C. Mathews Retired is a Engineering article available to read on EtoBox.
What is Energy Pumps and the Second Law about?
The Second Law of Thermodynamics states 'The entropy of a closed system can never decrease'. Scientists express this law in many different ways: † Energy cannot be recycled and do work. † The Clausius statement 'It is impossible for a self acting machine, unaided by an external agent, to convey heat from one body to another' † Energy transformation must increase entropy. This paper examines the thermodynamics of the Stirling engine, chilled with liquid nitrogen, and the novelty toy, the continually drinking duck (inventor unknown but available in toy shops for at least the last forty years). The analysis shows that: † The Stirling engine is a heat engine that recycles ambient heat and does work. The chilled nitrogen entropy increases. † The duck is an isentropic energy pump that upgrades and recycles ambient energy and does work. The driver-evaporating water entropy increases. † The duck energy pump and driver do not suffer Carnot efficiency losses.
Who reads Energy Pumps and the Second Law?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- R.C. Mathews Retired
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0960-1481)
- Published
- 2005
- Language
- EN
- Field
- Engineering (Physical Sciences)