this paper studies the modeling and optimization of energy use and greenhouse gas emissions of eggplant production using artificial neural network and multi-objective genetic algorithm in guilan province of iran. results showed that the highest share of energy consumption belongs to diesel fuel (49.24%); followed by nitrogen (33.30%). the results indicated that a total energy input of 13910.67 ...

the objective of this work was to develop a new design of an intake manifold through a 1d simulation. it is quite familiar that a duly designed intake manifold is essential for the optimal performance of an internal combustion engine. air flow inside the intake manifold is one of the important factors, which governs the engine performance and emissions. hence the flow phenomenon inside the inta...

Bluff body calculation was accelerated by using a special-purpose computer, MDGRAPE-2, that was exclusively designed for molecular dynamics simulations. The three main issues were solved regarding the implementation of the MDGRAPE-2 on vortex methods. These issues were the efficient calculation of the Biot-Savart and stretching equation, the optimization of the table domain, and the round-off e...

Gas-driven sorption heat pumps (GDSHPs) exhibit possibilities in the reduction of energy use and environmental impact of heating systems that utilise natural gas. By utilising renewable thermal energy from the environment, that is, air, ground or water sources, significant reduction of primary energy use can be achieved. However, high cost, low coefficient of performance (COP) and large volume ...

Given that there is variable diameter in the shale gas plunger lift wellhead, which causes cannot run up and down well affects effect of drainage production, paper carries out research on liner tube without wellhead installation methods, makes consistent with oil pipe, ensure can be open Christmas tree, facilitate periodic inspection replacement operation plunger, reduces cost salvage operation...

The problem of efficient gas lift for well annulus packers that rely on their own energy plungers is considered. complex related gas-liquid addressed in the frame model where inflow dynamics and liquid considered shale wells are weakly coupled. On this basis, with aiding support indoor simulation experimental data, a new plunger design taking into account leakage obtained. Finally, dedicated so...