TiC nanometer solar energy absorbent applied to solar water heater

Abstract

The invention discloses a TiC nanometer solar energy absorbent applied to a solar water heater. The TiC nanometer solar energy absorbent is mainly prepared from medium water, a pH regulator, nanopowder and a dispersing agent. Sunlight penetrates through a vacuum glass box and irradiates slurry, nanoparticles dispersed in water efficiently absorb the sunlight through the surface effect of the nanoparticles, the water temperature is rapidly increased, water heat is transmitted to domestic water in a heat conducting pipe through heat transmission, and the water temperature is quickly increased. According to the TiC nanometer solar energy absorbent, the problems that in the prior art, ineffective wave absorption gap positions exist between vacuum pipes, selective wave absorbing materials are arranged on the surfaces of inner pipes of the vacuum pipes in an evaporation mode, the solar energy absorption rate is low, the utilization rate is low, the evaporation process is complex, the cost is high, heat dissipation is rapid, and the heat insulation effect is poor are solved; and efficient absorption and utilization of solar energy are achieved (the absorption and utilization rate reaches 85%-95%), the achieving process is simplified, and the cost is low.

Description

technical field [0001] The invention belongs to the field of heat collection systems of solar water heaters, and in particular relates to a TiC nanometer solar absorber applied to solar water heaters. Background technique [0002] At present, as the concept of "energy saving and environmental protection" gradually penetrates into people's hearts, clean energy such as solar energy is becoming more and more popular, and the popular solar water heater is a good illustration of this point. A solar water heater is a device that can convert sunlight energy into heat energy and heat water from low temperature to high temperature to meet people's hot water needs in life and production. Common water heaters on the market are divided into structural forms: vacuum tube solar water heaters and flat plate solar water heaters. At present, the most widely used in China is the vacuum tube solar water heater, while the flat plate solar water heater is generally used in the world. The vacuu...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a TiC nano-solar absorbing agent applied to solar water heaters, aiming at solving the problem that vacuum tube water heaters in the domestic market have a small effective absorption area of ​​sunlight. The utilization rate of solar water heaters for solar absorption is only about 60%; the outer surface of the glass inner tube is coated with a selective absorption coating with excellent long-term stability, thin film or The coating process is more complicated and the cost is higher

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