3results about How to "Low quality score" patented technology

The invention relates to an enhanced urban terrestrial heat exploitation system and method based on nanofluid. The system comprises a heat collection pipeline, a heat exchange assembly and a nanofluid adjusting assembly. The nanofluid adjusting assembly is connected into the heat collecting pipeline. The nanofluid adjusting assembly comprises a storage pool, a control unit, a concentration detection sensor, a temperature sensor and a concentration adjusting unit, the concentration detection sensor, the temperature sensor and the concentration adjusting unit are connected with the control unit, the storage pool communicates with the heat collecting pipeline, the concentration detection sensor is used for detecting the concentration of nanofluid in the storage pool, and the temperature sensor is used for detecting the temperature of the nanofluid. And the concentration adjusting unit is used for adjusting the concentration of the nanofluid in the storage tank. Compared with the prior art, the method has the advantages that the fluid concentration in the whole circulation pipeline is adjusted in real time according to the appropriate heat transfer concentration of the hybrid nanofluid at all temperatures, then the heat exchange performance of the nanofluid is effectively guaranteed, and the heat exchange efficiency of the geothermal circulation system is improved.

A kind of magnetorheological damper using permanent magnetic seal ring, including cylinder assembly, piston assembly;Cylinder assembly includes working cylinder, working cylinder one end is sealed through sealing guide mechanism and is sealed with piston rod;Working cylinder other end is provided with gas compensation assembly;Piston assembly includes piston rod, and piston rod is connected with piston head assembly;Piston head assembly includes piston sleeve, and iron core is arranged in piston sleeve, and the left and right ends of iron core are correspondingly clamped with upper end cover and lower end cover and are combined into an integral whole with piston sleeve;Excitation coil is provided in piston sleeve and located outside iron core, and excitation coil controls the damping performance of magnetorheological fluid.The magnetorheological damper using permanent magnetic seal ring provided by the application can effectively reduce the leakage of magnetorheological fluid.

The invention relates to a sunscreen synergistic composition and application thereof.The sunscreen synergistic composition is composed of an emollient, a dispersing agent and an emulsifying agent, the emollient, the dispersing agent and the emulsifying agent are all selected from specific components, all the components in the sunscreen synergistic composition cooperate with one another, the sunscreen synergistic composition is applied to a sunscreen cosmetic composition, and the sunscreen cosmetic composition has the good sunscreen effect. The sunscreen cosmetic composition has high SPF and excellent skin feeling, in addition, the sunscreen cosmetic composition provided by the invention also has excellent dosage form stability, and when the sunscreen cosmetic composition is a shake-shake dosage form sunscreen product, the shake-shake dosage form sunscreen product can be kept in a uniform state for a long time after being shaken up.