Showing 1 - 10 of 83
Variable-speed drives in any machine provide an accurate control and high-energy efficiency. More and more often …. The paper aims to achieve accurate efficiency estimation by presenting a new modified calculation method to predict the …
Persistent link: https://www.econbiz.de/10010906838
and thermal efficiencies for these cycles was performed. The findings demonstrated that the highest thermal efficiency was … achieved using the recompression Brayton cycle, at June noontime. The maximum integrated system thermal efficiency using this … cycle was 40% while the maximum thermal efficiency of this cycle alone was 52%. The regenerative Brayton cycle, although …
Persistent link: https://www.econbiz.de/10011209443
The present study is concerned with the exergoeconomic performance analysis of a storage-type electrical water heater, being subjected to two volumes of hot water removals at 5 L/min; the first one immediately after the heating of water in the tank, and the second, after some time has been...
Persistent link: https://www.econbiz.de/10011264418
motors efficiency as one of the greatest energy consumption apparatuses in the world. Induction motors constitute, by far … powerful candidate with growing market are investigated in some details. The motor opportunities like high efficiency, high …
Persistent link: https://www.econbiz.de/10010807313
the second law efficiency of the device by 50% points, corresponding to a 3.8% point increase in thermal efficiency. …
Persistent link: https://www.econbiz.de/10010807350
This work compares two classes of exergy efficiency definitions and applies them on a simple process (i.e. PRICO) for … efficiency definitions already proposed in the literature. In addition, the paper highlights the importance of decomposing the …
Persistent link: https://www.econbiz.de/10010807458
Hydrogen demand as an energy currency is anticipated to rise significantly in the future, with the emergence of a hydrogen economy. Hydrogen production is a key component of a hydrogen economy. Several production processes are commercially available, while others are under development including...
Persistent link: https://www.econbiz.de/10010807569
and use of energy and exergy based performance criteria, and of the Second Law efficiency, with an aim at the advancement …
Persistent link: https://www.econbiz.de/10010807607
in detail. The effects of some main parameters on the exergy destruction and exergy efficiency of the cycle are … cooling along with evaporative aftercooling has an obvious increase in the energy and exergy efficiency compared to the basic … gas turbine cycle cogeneration. It is further shown that the first-law efficiency, power to heat ratio and exergy …
Persistent link: https://www.econbiz.de/10010807748
In drying processes it is necessary to appropriately control air humidity and temperature in order to enhance water evaporation from product surface. The aim of this work is to investigate several HVAC configurations for product drying based on desiccant wheels, in order to find systems which...
Persistent link: https://www.econbiz.de/10010808003