MXene nano-fluid preparation method, MXene nano-fluid and solar heat collector

Abstract

The invention belongs to the technical field related to solar energy utilization, and discloses an MXene nano-fluid and a preparation method thereof. The method comprises the following steps: mixing MXene with a dispersing agent to obtain a mixture, and dispersing the mixture into a base solution by adopting an ultrasonic instrument to obtain the MXene nano-fluid capable of efficiently absorbing solar radiation. The invention further provides a solar heat collector adopting the MXene nano-fluid. The solar heat collector comprises at least one heat collecting unit, wherein each heat collectingunit comprises a groove, the MXene nano-fluid is arranged in the groove, the bottom and the side wall of the groove are provided with reflecting coatings for reflecting solar radiation, and an openingof the groove is provided with a transparent heat preservation material for sealing the opening; and the heat collecting unit further comprises a convex lens, and the groove is located on the focus of the convex lens. According to the MXene nano-fluid and the preparation method thereof, the structure of the solar heat collector and the heat exchange fluid in the solar heat collector are improved,and thus, the problem that an existing solar heat collector is low in heat collecting efficiency is solved.

Description

technical field [0001] The invention belongs to the technical field related to solar energy utilization, and more specifically, relates to a preparation method of MXene nanofluid, MXene nanofluid and a solar heat collector. Background technique [0002] The efficient use of solar energy has always been the relentless pursuit of human beings. At present, the indirect absorption solar collector is mainly used in the field of solar heat collection. Absorb solar radiation to form a high-temperature surface, and then heat the fluid through the heat transfer method of convection heat exchange to realize the utilization of solar energy. Although this method can easily realize the absorption of solar radiation, there are many heat transfer links. The disadvantages such as large loss lead to the inability to further improve the heat collection efficiency. The direct solar collector is different from the indirect collector. It uses the direct absorption of solar radiation by the heat...

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Problems solved by technology

[0003] Aiming at the above defects or improvement needs of the prior art, the present invention provides a preparation method of MXene nanofluid, MXene nanofluid and solar collector, which increases the concentration and reflection of solar radiation by adding a concentrating convex lens and a reflective coating Function, by using MXene nanofluid as the heat transfer medium, improve the performance of the heat transfer medium to absorb solar radiation, so as to improve the heat collection efficiency of the existing solar collectors, and then solve the problem of low heat collection efficiency of the existing solar collectors

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