An un-damped cavity coupled to the fluctuating pressure will absorb energy (½)pV during a half-cycle, and then return (½)pV back to the air on the following half-cycle. The following description discloses embodiments of a power generating system configured for use on the surfaces of structures such as building and road overpasses. A disclosure relating to an embodiment may apply to all embodiments, or one or more embodiments.
- Rugged and reliable design with low noise and visual impact
- Sumerge los pies en la preparación, durante 15 o 20 minutos
- Anemia por infecciones (paludismo)
- No permanecer de pie por mucho tiempo
FIG. 5A is a perspective view of another embodiment of a power generating system 50 according to certain aspects of this disclosure. FIG. 6A is a perspective view of a structured surface 60 according to certain aspects of this disclosure. FIG. 6A is a perspective view of a structured surface according to certain aspects of this disclosure.
FIG. 8 depicts a tent equipped with pyroelectric power generators according to certain aspects of this disclosure. FIG. 8 depicts a tent 100 equipped with pyroelectric power generators 66 according to certain aspects of this disclosure. For an example of an 8-person tent approximately 15 ft×24 ft, the tent 100 has a total surface area of approximately 864 square feet or external surface. Based on a flat-plate model and the 5 m/s wind velocity, the average boundary layer thickness over the roof 32 will be approximately 20 cm (8 in).
A structured surface is also disclosed that generates turbulence having frequency components in a range that causes power generating devices to oscillate thereby generating power. FIG. 2B depicts a second step in the energy generation process, wherein the electrodes 20A, 20B are moved away from the surfaces 16A, 16B sufficiently far that the surface charges 12, 14 no longer are interacting with the electrodes 20A, 20B. Without the influence of the surface charges 12, 14, the charges 22, 24 are free to flow towards each other. FIG. Dolor de cuello nuca y espalda . 2A depicts a first step in the energy generation process, wherein the electrodes 20A, 20B are brought into close proximity with the surfaces 16A, 16B of the pyroelectric material 10. In certain embodiments, one of the electrodes 20A, 20B is in contact with the respective surface 16A, 16B. The surfaces 16A, 16B are bare crystal, i.e.
The method also includes the step of placing a second conductive electrode in proximity with a second surface of the pyroelectric material at least while the first electrode is proximate to the first surface. The power module is configured to capture power from an electrical current flowing between the first and second electrodes. The second surface is on the opposite side of the first surface. In certain embodiments, power generating systems are located on the columnar structures 62 (not shown). 7A, a pyroelectric power generator 66 is located on the portion 74 of the wing 70 to capture energy from this turbulent air flow. Air flow 38 will typically develop turbulence as it flows over a building 30 as the portion of the air flow 38 that is blocked by the building 30 rises up and interacts with the higher-level air flow 38, creating turbulence on both the windward side of the building 30 and on the roof 32. Computational Fluid Dynamics (CFD) simulations, wind tunnel measurements on models, and full-scale measurements on instrumented buildings have all been used to quantify magnitudes, spatial, and temporal fluctuations of turbulent boundary layer pressure.
Tipos De Dolor De Cabeza
§112, sixth paragraph, unless the element is expressly recited using the phrase “means for” or, in the case of a method claim, the element is recited using the phrase “step for.” Furthermore, to the extent that the term “include,” “have,” or the like is used in the description or the claims, such term is intended to be inclusive in a manner similar to the term “comprise” as “comprise” is interpreted when employed as a transitional word in a claim. The material properties of the flexible electrode 42 and the thickness and diameter of the membrane dome 48 are selected such that the pressure variations of the turbulent air flow 38 cause the membrane dome 48 to oscillate between the configurations of FIG.
A phrase such as an “aspect” does not imply that such aspect is essential to the subject technology or that such aspect applies to all configurations of the subject technology. A phrase such as an aspect may refer to one or more aspects and vice versa. The word “exemplary” is used herein to mean “serving as an example or illustration.” Any aspect or design described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects or designs.
7A depicting another pyroelectric power generator 66 according to certain aspects of this disclosure. FIGS. 3A-3C illustrate the air flow behavior around an example building according to certain aspects of this disclosure. 4A according to certain aspects of this disclosure. 6A according to certain aspects of this disclosure. FIG. Dolor lumbar parte izquierda . 7A is a cross-section of a wing equipped with a pyroelectric power generator according to certain aspects of this disclosure.