Analysis of a thermal cycle that surpass Carnot efficiency undergoing closed polytropic transformations
Journal Title: JOURNAL OF ADVANCES IN PHYSICS - Year 2018, Vol 15, Issue 0
Abstract
This research work deals with a feasible non-regenerative thermal cycle, composed by two pairs of closed polytropic-isochoric transformations implemented by means of a double acting reciprocating cylinder which differs basically from the conventional Carnot based thermal cycles in that: -it consists of a non condensing mode thermal cycle -all cycle involves only closed transformations, instead of the conventional open processes of the Carnot based thermal cycles, -in the active processes (polytropic path functions), as heat is being absorbed, mechanical work is simultaneously performed, avoiding the conventional quasi-adiabatic expansion or compression processes inherent to the Carnot based cycles and, -during the closed polytropic processes, mechanical work is also performed by means of the working fluid contraction due to heat releasing. An analysis of the proposed cycle is carried out for helium as working fluid and results are compared with those of a Carnot engine operating under the same ratio of temperatures. As a result of the cycle analysis, it follows that the ratio of top to the bottom cycle temperatures has very low dependence on the ideal thermal efficiency, but the specific work, and, furthermore, within the range of relative low operating temperatures, high thermal efficiency is achieved, surpassing the Carnot factor.
Authors and Affiliations
Ramon Ferreiro Garcia, Dr. Jose Carbia Carril
Keywords
Related Articles
- EP ID EP653485
- DOI 10.24297/jap.v15i0.8029
- Views 65
- Downloads 0
Influence of Au on Ge Crystallization and Its Thermoelectric Properties in a Au-induced Ge Crystallization Technique
Poly-crystalline Ge (pc-Ge) thin films were prepared on a SiO2/Si substrate using Au-induced crystallization (GIC) of amorphous Ge (a-Ge) with an annealing temperature around the eutectic point of Au-Ge alloy system (361...
Detection of Pb in Whitening Creams via Laser Induced Breakdown Spectroscopy
Recently whitening creams have been widely used to protect UV light exposure due to the depletion of ozone layer. The demand attracts the rapid growth of various whitening creams in the market. The detection is require...
Action Flow in Obsessive-Compulsive Disorder Rituals: a model based on Extended Synergetics and a Comment on the 4th Law
The flow of actions in rituals of obsessive individuals is discussed from a nonlinear physics perspective. An amplitude equation model based on extended synergetics is studied. The amplitude dynamics describes both the b...
OPTICAL BAND GAP ANALYSIS OF NANO-CRYSTALLINE CERAMIC PbSrCaCuO
ABSTRACTNano-crystalline Ceramic PbSrCaCuO have been prepared by a high-energy ball milling process through mechanically assisted synthesis. The prepared sample was then subjected to calcinations to acquire the desired h...
Gravity – An Intrinsic Property of Matter! A Qualitative Graviton-Orbital-Band Theory
All profound theories of nature, life, and society have some philosophical underpinning; the theories of gravity are no exceptions. The theories of gravitation of Isaac Newton and Louis Le Sage were based on mechanical m...