Energy-saving and heat transfer enhancement considerations are more crucial due to nearly running out energy resources ensuring the sustainability of nature. The exchangers one main components directly affect thermal efficiency systems. To enhance rate, fin plate structure is widely used. Various vortex generators may be involved generally on surface fins, like ribs, baffles, delta winglets, pe...

The increase in energy demand, the scarcity of resources, as well adverse environmental impact burning fossil fuels make it necessary to diversify sources used. This also applies residential sector, which accounts for a significant proportion global consumption. Particular attention should be paid water heating, importance this process balance buildings is steadily increasing. One methods used ...

The influences of V-shaped delta-wing baffles on the thermohydraulic performance characteristics in a round tube were experimentally tested. having set number wings (N = 4, 6, and 8) comparatively with various pitch ratios P/D 2.0, 2.5, 3.0 thoroughly fitted inside tube. In present work, responsible for both recirculation/reverse flow behind solid baffle longitudinal vortex wing. winged N 8 pro...

Cross-flow turbines have recently been proposed for energy recovery in aqueducts when the outlet pressure is greater than zero, owing to their constructive simplicity and good efficiency within a large range of flow rates head drops. In case high drop (higher 150 m) relatively small discharge (lower 0.2 m3/s), traditional design these leads very widths nozzle runner; as consequence, friction lo...

fouling is one of the main parameters in design of any exchanger. ignoring this parameter causes problems such as overheating or under- heating of process streams. in this article a heat exchanger network was designed using process streams data in cdu of tehran refinery. then using tema fouling factors, network exchangers were designed and area and cost were estimated. by changing fouling facto...