Regeneration technologies are those where the energy potential of the working fluid is used directly or increased by keeping the energy form generally by increasing the temperature or pressure of the authentic energy-charged medium. Recuperation technologies are those where the available energy potential of the working fluid is used to change the energy form at the expense of a more complete use of the residual enthalpy. The main recuperation technologies are based on the thermal-mechanical and thermal-electrical technologies. Classical thermodynamics assumes that the energy of a system should be estimated regarding the value of entropy. Classical thermodynamics treats the problems at the macroscopic level by designing the pattern of the equilibrium states. The basic approach of "panel optical light conductor" trend is the analysis of the processes at micro-level, assessing the behavior of the individual energy carriers during their interaction with each other via statistical data processing. Hydrodynamic technologies are the oldest known power technologies.