The improvement of the overall utilization rate compressed natural gas (CNG) engine fuel is basis efficient energy utilization. On foundation heat balance theory internal combustion engines, this study fully considers operation characteristics CNG engines and systematically analyzes distribution different waste under variable working conditions. nonlinear relationship between speed intercooler ...

in this paper, we study the problem of minimizing the ratio of two quadratic functions subject to a quadratic constraint. first we introduce a parametric equivalent of the problem. then a bisection and a generalized newton-based method algorithms are presented to solve it. in order to solve the quadratically constrained quadratic minimization problem within both algorithms, a semidefinite optim...

Waste to fuel conversion has attracted prominence due higher demand, waste disposal issues, and environmental economic impact. Therefore, an alternative approach for addressing the issue of tire can be provided by using pyrolysis oil (TPO). The energy, exergy, thermoeconomic sustainability studies TPO-diesel blends were carried out in this study. analysis was compared with biodiesel-diesel blen...

The global power sector is facing a number of issues, but the most fundamental challenge is meeting the rapidly growing demand for energy services in a sustainable way. This challenge is further compounded by the today’s volatile market rising fuel costs, increased environmental regulations, etc. Plant owners are challenged to prepare for the impact of future fuel price increases and carbon tax...

Enhancing the sustainability and diversification of Iraq’s electricity system is a strategic objective. Achieving this goal depends critically on increasing use renewable energy sources (RESs). The significance developing solar-powered technologies becomes essential at point. Iraq, similar to other places with high average direct normal irradiation, good location for concentrated solar thermal ...

in recent years, due to absence of integrated watershed management in most regions, natural resources have witnessed numerous damages with severe floods as one of its consequences which further leads to economic, social and environmental damages. presently, there is no optimal utilization of land in most watersheds hence no optimal model matching with facilities and objectives is used in the wa...

The aim of the paper is to identify consequence Constructal Principle in field Thermoeconomics (energy) production systems. This has been recently formulated as an extension Maximum Entropy Production and it used literature explain shape structure all kind flowing First, concept Thermoeconomic Environment defined consistently with consumption environmental resources residual emissions, which in...

optimization of maintenance resources to maximize the system availability is a major concern in different manufacturing systems. therefore, a lot of effort is put to construct optimization models to reach the maximum availability level and to reduce the costs of lack of availability. however, despite these efforts, data uncertainty in the real world problems was neglected in proposed models whi...