摘要:
An apparatus comprising an oscillation blade device and a method for operating the oscillation blade device are disclosed. The apparatus comprises a power source coupled and a current meter. The power source is configured to apply a plurality of alternating electric excitation signals to an oscillation blade device at a corresponding plurality of excitation frequencies. The current meter is configured to measure the current value supplied by the power source to the driver at each one of the excitation frequencies, and provide a plurality of measured current values such that each measured current value corresponds to at least one respective oscillation frequency from said plurality of oscillation frequencies. A system comprising the apparatus is also disclosed.
摘要:
An apparatus comprises a driver a driver connected to a planar body and configured to generate a motion in the planar body in response to an external excitation. The planar body comprises a flexible flat sheet with a first lateral side and a second lateral side, the first lateral side and the second lateral side diverging from each other in a direction moving away from the planar body. The planar body further comprises a plurality of rigid structures. A first rigid structure is attached to the first lateral side of the flexible flat sheet and a second rigid structure is attached to the second lateral side of the flexible flat sheet and the rigid structures provide support for the flexible flat sheet.
摘要:
A cooling system for a subterranean electronic apparatus, the system comprising an air inlet at or above ground level to receive environmental air at an ambient temperature for the system, an air outlet at or above ground level to exhaust heated air from the system, and a subterranean conduit between the inlet and the outlet configured to allow air drawn into the conduit at the inlet to flow towards the outlet, at least a portion of the conduit passing in close proximity to or otherwise in contact with or coupled to the electronic apparatus to be cooled, wherein the air outlet comprises a structure configured to induce airflow between the inlet and the outlet and through the subterranean conduit.
摘要:
A method for modifying thermal performance of an electronic apparatus deployed in a subterranean region, the method including separating the region from surrounding subterranean material using a separation element, burying the apparatus in the region using doped material, the doped material comprising a first material having a first thermal conductivity doped with a second material having a second thermal conductivity, wherein a thermal conductivity of the second material is higher than the thermal conductivity of the first material to increase thermal performance of the first material.
摘要:
An apparatus comprises a driver a driver connected to a planar body and configured to generate a motion in the planar body in response to an external excitation. The planar body comprises a flexible flat sheet with a first lateral side and a second lateral side, the first lateral side and the second lateral side diverging from each other in a direction moving away from the planar body. The planar body further comprises a plurality of rigid structures. A first rigid structure is attached to the first lateral side of the flexible flat sheet and a second rigid structure is attached to the second lateral side of the flexible flat sheet and the rigid structures provide support for the flexible flat sheet.
摘要:
A cooling apparatus is disclosed having an air conduit with a thermally conductive wall. The apparatus further comprises an air mover located adjacent to an end of the air conduit. The air mover is configured to cause air to flow through the air conduit. A heat transfer assembly comprising the cooling apparatus is also disclosed.
摘要:
A method, an apparatus and a cooling arrangement are disclosed. In a first switching configuration, electric excitation is applied to a piezofan (11,21) having a piezoelectric element (111) attached to a planar body (112), causing the planar body to move. In a second switching configuration, the piezoelectric element is coupled to a processor (24). The processor receives an electric signal generated by the piezoelectric element caused by a movement of the planar body in the second switching configuration and generates data corresponding to said electric signal for assessing a performance of the piezofan.