Plenary Lecture

Differential Equations that Describe the Thermodynamically State of Gas in the Working Cavity of the Helical Screw Compressor

Assistant Professor Dan Codrut Petrilean
University of Petrosani
Str. Universitatii No. 20
332006 Petrosani
E-mail: petrilean1975@yahoo.com

Abstract: Regarding the helical screw compressor, for the compression and outlet processes, it is necessary to establish the gas parameters, taking into account the time and the rotor’s rotation angle. The method is based on a differential equation system solving, equations that describe the gas state in the compressor twin cavities.
The first equation represents the gas pressure dependence of the gas volume and temperature. The second equation is the complete differential of the temperature changing, in a known period. We consider that the working process inside the cavity, for the known time interval, takes place adiabatic.

Brief Biography of the Speaker:
PETRILEAN Dan Codrut is an Electromechanical Engineer, graduate of the University of Petrosani, 2000;
Master degree in "Machinery and equipment of modern technology", 2003, Faculty of Machines and Electromechanical Equipments, University of Petrosani;
Ph.D. thesis "Researches regarding the improving of the generation and use efficiency of the pneumatic energy in the mining industry", University of Petrosani, 2006;
Post-university course "Elaborating the thermoenergetical balance", Technical University of Cluj–Napoca, 2007;
Since 2007 – energetic auditor;
Since 2006 - Assistant professor at University of Petrosani, teaching Thermodynamics, Heat engineering, Fluid mechanics.
More than 50 publications in scientific journals and scientific conferences.