Protected agriculture is one of the prominent agricultural techniques. It allows for creating an adapted microclimate to plant growth, which leads high quality and off-season production. Instead, a significant amount energy required. This study aims provide potential saving based on optimal selection greenhouse design under Fez City’s climatic conditions (Morocco). For this purpose, dynamic mod...

This communication presents thermodynamic methodology for the performance evaluation of combustion gas turbine cogeneration system with reheat. The energetic and exergetic efficiencies have been defined. The effects of process steam pressure and pinch point temperature used in the design of heat recovery steam generator, and reheat on energetic and exergetic efficiencies have been investigated....

A practical method for the study of osmotic- and-diffusive conversion of free energy of solutions with different concentrations is presented. Equations for effective power, dissipative power, total power and energetic efficiency have been derived for fixed membrane systems. These equations allow energetic evaluation of these systems. The significance of the method for biological studies is also...

A problem with pneumatic positioning systems is the low energetic efficiency. This paper presents a structure of a compressed air saving for pneumatic positioning systems with capacity to move high loads. This structure use the loading to save compressed air and thus to increase the energetic efficiency of these systems. This configuration adds a fast switching on/off valve in a feedback betwee...

An efficient molecular motor would deliver cargo to the target site at a high speed and in a punctual manner while consuming a minimal amount of energy. According to a recently formulated thermodynamic principle, referred to as the thermodynamic uncertainty relation, the travel distance of a motor and its variance are, however, constrained by the free energy being consumed. Here we use the prin...