Dolor lumbar embarazo tercer trimestre

Mujer Del Dolor De Estómago Fotografía de archivo - Imagen.. Expected seawater temperature can be incorporated in to the optimization process described in this invention if so desired by those skilled in the art. Thus, the method of optimization described in this invention can be applied to a “flatter” and more constant pattern of water movement and speed. These types of devices are generally not capable of operating in the deeper parts of the ocean. The preferred embodiment of this invention incorporates a venturi throat whose cross-sectional area is specifically designed to optimize the amount of power extracted from a portion of ocean perturbed by waves with specific patterns of height and period, and with respect to the selected venturi throat depth. Ocean waves also represent a very concentrated energy source, offering the potential for the harvesting of large amounts of energy using relatively small devices. 5f. Avoiding Ice Deposits When the water flowing through a venturi device is accelerated, both its pressure and its temperature drop.

  • Pan y productos de bollería industrial
  • Alteraciones mecánicas del cuerpo
  • Set de cuerdas y mosquetones
  • Daño a otros vasos sanguíneos del cuerpo
  • Indigestión, nauseas y vómitos
  • Hacer actividades como caminar a paso rápido, andar en bicicleta, nadar o bailar
  • Llevar una sola maleta

9 Mejores Sandalias Ortopedicas De Mujer Postoperatorio.. It will actually occur at the point at which the lateral pressure remaining in the water drops below the vapor pressure of the water. The relationships expressed in this graph apply not only to venturi tubes, but also to any venturi device. Note: The power levels discussed above, and below, when expressed in terms of kW/m2 are referring to the amount of power available for extraction from each square meter of the cross-sectional area of the mouth of a venturi device. With respect to the wave conditions specified above, the amount of power available in the unaccelerated water flowing in to the venturi device’s mouth is 3.33 kW/m2. The optimal amount of power available, in the water flowing through a venturi device, with a suitably optimized venturi throat increases from 50 to 650 kW/m2 (i.e.

When the cross-sectional area of a venturi device’s throat narrows, the water speeds up, which increases the amount of power available per unit of cross-sectional area, but the total cross-sectional area available decreases, so a tradeoff exists. This is the power that will be available in the water flowing through the venturi tube’s throat relative to the power available in the water entering the venturi tube’s mouth. The diameter of the venturi throat of a Heck device, relative to the venturi mouth diameter, is 0.862 (as explained earlier).

Dolores Musculares Causas

We would then adjust the vertical scale of each line in the graph to correspond to the values that would be obtained from a venturi device with a mouth diameter of 5 meters, instead of the 1-meter mouth diameter used in FIG. FIG. 13C also displays what the actual water-speed profile, of the water flowing through the throat of a venturi device with a venturi factor of 18.9, would be if the water entering the venturi device mouth was characterized by a choke speed of 25 m/s. FIG. 13D displays the amount of power that would be available in the throat of a venturi device with a venturi factor of 18.9, when it is driven by waves with a height of 4 meters and a period of 8 seconds, when the water flowing through the venturi device has a choke speed of 25 m/s. Dolor en zona baja de la espalda . 15. One line in FIG. Propeller/turbine 120 b is positioned concentrically with rigid collar 160 because the lumen of rigid collar 160 is the narrowest part of the lumen created by shroud 133. Rigid frame members 156 have a first end pivotally secured to rigid collar 160 in circumferentially spaced relation to one another.

Dolor Muscular Piernas

These represent one and three-quarters of the wave’s progress towards its next trough. This would likely best be accomplished by populating a high-resolution array of water speeds with the average water speeds encountered during fractional periods of time of a constant duration (e.g. To optimize for greatest annual total power output, calculate the optimal venturi throat diameter on the basis of this high-resolution array of water speeds in a manner similar to the ones already discussed above. Wave height is shown on the abscissa, optimal relative throat diameter on the left ordinate and optimal power on the right ordinate.

19.) Though not shown in FIG. Wave period is shown on the abscissa, optimal relative throat diameter on the left ordinate, and optimal power on the right ordinate. This optimal throat diameter, and/or cross-sectional area, is a unique value with respect to the following combination of wave height, wave period and choke speed. FIG. 11 is a graph illustrating the relationship of the power available (i.e. FIG. 8 shows the relationship between the maximum amounts of power that can be made available through the application of this invention (i.e. The difference between what is trivial and what is non-trivial with respect to a venturi effect is necessarily subjective. Apendicitis dolor de espalda . Therefore, at the 2-second mark of the graph in FIG. Note that FIG. 12 reveals an optimal relative diameter for the throat of the venturi device (and a corresponding optimal relative cross-sectional area) when driven by waves of the specified kind, in water characterized by the specified choke speed.

Tipos De Dolor Pdf

In this manner, you can deploy a venturi device that possesses a venturi throat diameter that will result in an optimal total annual amount of power. It may be desirable in some circumstances, especially in cases where the materials and/or design of a venturi device would render it especially susceptible to damage from cavitation, to select a venturi throat diameter which, with respect to a given pattern of wave heights and periods, is slightly sub-optimal with respect to the amount of power generated, but which nonetheless minimizes the likelihood that cavitation will occur. All such alternate embodiments are within the scope of this invention.

Such surveys sometimes represent hourly, or even daily, peak (i.e. FIG. 22C illustrates how such an alternate embodiment of a venturi device might operate in conjunction with a buoy. FIG. 6 does not impose any upper limit on the speed to which the water flowing through a venturi device can be accelerated.

Therefore, the choke speed of a venturi device will only vary to a minor, if not negligible, extent with respect to the temperature of the seawater entering a venturi device. This amplified speed profile is a simple amplification of the speed profile of the water entering the venturi device. FIG. 13C illustrates the speed profile (i.e. FIG. Mejor postura para dormir con dolor lumbar . 22C depicts the portable embodiment of FIGS. This up-and-down motion of the propeller through relatively still waters compels the propeller to spin. The scope of this disclosure includes all variations in the sizes of the devices disclosed. FIG. 9 shows the relationship between the maximum amounts of power that can be made available through the application of this invention, relative to the height of the waves driving the vertical oscillations of a venturi device. The vertical distance between the troughs and the peak is the measure of the height of a wave.

FIGS. 25A and 25B illustrate an alternative embodiment in which lifting means is incorporated into the buoy to modify the position of the venturi and or the generator. A preferred embodiment of a portable version of the venturi-pinwheel device, which incorporates a collapsible venturi shroud, also contains rigid collar 160 serving as the base for the collapsible venturi shroud 133 to constrain its alignment. A preferred embodiment of the full-sized venturi-pinwheel wave-energy device has a bi-directional venturi shroud allowing it to generate power when falling as well as rising.

Otherwise, the buoy will begin to “integrate” the wave’s motion. For instance, we will often express a power level as some amount of kilowatts per square meter. The amount of power derived from each wave type could then be weighted by the frequency with which it was observed, or with which it is expected to be observed in the future, and the sum of the weighted power contributions associated with each wave type can then be used to compute the overall power level which would be expected with respect to each possible relative venturi throat diameter. 13C, the speed of the water flowing through the throat of the venturi device can be determined. 0.23) is slightly less than the diameter at which the speed of the water passing through the throat of the venturi device first begins to reach and/or exceed the choke speed (i.e. However, the scope of this patent is not limited to the size of the energy device and applies with equal force to devices of all sizes.

20, 2009, which issued as U.S.

The graph’s use of a “Relative Throat Diameter” is based on the assumption of a radially symmetrical venturi tube, but the data in the graph applies with equal force to venturi device of any form or design. 23A and 23B, and inclusive venturi device, to which this invention would apply with equal force. Heck further proposed (although he did not claim) a modification to his wave energy device in which frusto-conical sections would be added to the ends of the submerged cylindrical turbine housing. 20, 2009, which issued as U.S. 1 of Heck’s U.S. However, the actual speed of the water passing through the throat of the venturi device is limited by the choke speed of the water, i.e. Holes positioned about the throat of the venturi tube allow air from the connected tubes to be drawn from the tubes and into the water flowing through the venturi throat. FIG. 7 provides a graph illustrating the relationship of a venturi tube’s choke speed to the depth of the venturi tube’s throat.