The water scarcity in the world near future become to a global challenge. main aim of present study was elucidate performance three identical solar distillation units with different configurations under climatic conditions city Tehran. All systems were equipped heating source that are thermoelectric modules (TEH), copper heater (CH), and (SWH) while all system assisted an active external conden...

In order to investigate options for improving the maintenance protocol of commercial refrigeration plants, two thermoeconomic diagnosis methods were evaluated on a state-of-the-art refrigeration plant. A common relative indicator was proposed for the two methods in order to directly compare the quality of malfunction identification. Both methods were applicable to locate and categorise the malf...

The use of the organic Rankine cycle (ORC), flash (OFC) and Kalina (KC) is proposed to enhance electricity generated by a supercritical CO2 recompression Brayton (SCRB) cycle. Novel comparisons SCRB/ORC, SCRB/OFC SCRB/KC integrated plants from thermodynamic, exergoeconomic sustainability perspectives are performed choose most appropriate bottoming for waste heat recovery SCRB For comprehensiven...

The maritime industry will continue to see increasing regulatory requirements reduce carbon emissions from ships’ operations. Improving the energy efficiency of ships with waste heat recovery systems based on organic Rankine cycle (ORC) is an attractive way meet these tightening requirements. operational profile a ship has huge influence feasibility installing ORC onboard as it affects source d...

in this article, multiple-product pvrp with pickup and delivery that is used widely in goods distribution or other service companies, especially by railways, was introduced. a mathematical formulation was provided for this problem. each product had a set of vehicles which could carry the product and pickup and delivery could simultaneously occur. to solve the problem, two meta-heuristic methods...