Isothermal gas compression and expansion processes by controlling actuators

DOI: 10.18462/iir.compr.2024.0639

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Sekcia: Reciprocating compressors II

Stav prijatia: Príspevok prijatý

Autori

Abstrakt

This work is part of a program started several years ago, carried out until now by the publication of a series of articles [1, 2] and by the filing of several patent applications [3-5], program through which the authors wish to contribute to the fight for environmental protection, by proposing solutions for better use of available energy sources and for the reduction of chemical and, last but not least, thermal pollution of the environment. A first conclusion of this program is that at this stage of the state of the art, due to the fact that they were designed at a time when energy was cheap and the harmful effects on the environment were not yet so obvious, the industries and residential thermotechnical installations currently used, producing significant quantities of entropy, still pay a heavy price in lost exergy. Therefore, an important avenue of attack to achieve the proposed objectives consists of the modification, or progressive replacement, of the usual technical processes in existing thermodynamic installations, even those that use "green" energy, by new processes that consume less exergy. The most important changes, applicable to these installations, must aim at a favorable reduction in temperature differences between the elements of the installation and the environment in which they are located, as well as the use of thermodynamic transformations with minimal generation of entropy. In light of these observations, our research paid particular attention to isothermal transformations.

Kľúčové slová

isothermal transformation
finite temperature differences
energy efficiency
exergy efficiency
irreversible transformations
entropy generation