Abstract A radical transformation of the global energy system is underway. Solar photovoltaics and wind now comprise three-quarters net new electricity-generation-capacity additions because they are cheap. The deep renewable electrification services including transport, heating industry will allow solar to largely eliminate fossil fuels over next few decades. This paper demonstrates that Nepal ...

Abstract In this paper, we (i) present a methodology for determining the aerodynamic performance of bi-directional turbomachines pumped thermal energy storage, i.e., designed to operate as compressor in one direction, and then turbine opposite (ii) carry out computations such turbomachines, (iii) propose principles conceptual design these devices. Focus is placed on using storage cycle not only...

In conventional power plants trash-racks are provided at the intakes to protect the turbines. In pumped storage plants, the draft tube or tailrace must also have trash-racks to protect the units while pumping. Because the loads believed to cause many failures of trash-racks are dynamic in nature, it is important to understand the dynamic characteristics of trash-rack structures in general and a...

In this study, the energy scenario in China was analyzed by retracing trend of exponential population growth, gross domestic product (GDP), and electricity production consumption. A forecast up to 2050 made based on history forecasts other field studies. It possible deduce data pollutants terms CO2 equivalent (CO2-eq) emitted over time if there were no changes way produced. Moreover, different ...