The paper focuses on variable-rotor-speed/variable-blade-pitch wind turbines operating in the region of high wind speeds, where blade pitch and generator torque controllers are aimed at limiting the turbine's energy capture to the rated power value.
At below rated wind speed, a torque control is used to maximize the energy capture and at above rated wind speed, pitch control is used to maintain the rated power.
This knowledge was used to predict the potential for enhancement of the rate of energy capture, by varying the porosity in the structure, whilst also estimating the detriment to the energy storage density and the mechanical strength.
This study reports the potential for porous aluminium structures, containing porosity in the region of 50 80%, to provide enhancement of the rate of energy capture in phase change materials, whilst being capable of providing a basic mechanical function.
We argue that large-bodied D. esakii likely face a higher risk of being detected by their prey; hence, employing the 'lunge' strategy would lead to considerable energy losses at a comparably low net energy uptake (i.e., successful capture rate).
Reforming-based glycerol processing concepts with CO2 capture based on gas liquid absorption have significantly lower energy efficiency (55 65%) and carbon capture rate (57 70%).
The results for chemical looping designs (either syngas-based or direct bioethanol) show promising energy efficiency coupled with total carbon capture rate.
Next, according to the design principle of the maximum wind energy capture, the rotor diameter and the rated wind speed of a direct-drive wind turbine with the optimum PM generator are determined.
For all of the membrane designs analyzed, the energy and cost of capture vary with the capture rate.
These energy savings come at the cost of a lower optimal carbon capture rate, namely 78% instead of 87.5% as reported in the preliminary design.
