Solar water heater heat collection pipe coating material

A technology for solar water heaters and coating materials, which is applied to coatings, radiation-absorbing coatings, etc., can solve problems such as increasing production costs, and achieve the effects of increasing service life, high heat absorption rate, and improving heating efficiency.

Inactive Publication Date: 2020-02-21
SICHUAN JINMING NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface of the inner tube is generally coated to achieve selective absorption of light. The coating is generally prepared by vacuum evaporation, magnetron sputtering and other methods. With the development of history, the coating has successively experienced lead sulfide / asphalt paint coating, Black chrome coating, purple gold coating, etc., but these coatings require special equipment for production, which increases production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1, solar water heater heat collecting tube coating material, is formulated by following raw material components and weight ratio: carbon powder 10, zinc powder 5, titanium dioxide 10, aluminum silicate 5, calcium chloride 5, water-based polymer resin 20 parts, 5 parts of silane coupling agent, 40 parts of heat conducting agent.

[0014] The coating material has a thickness of 100 μm.

Embodiment 2

[0015] Embodiment 2, solar water heater heat collector tube coating material, is formulated by the following raw material components and weight ratio: carbon powder 8, zinc powder 2, titanium dioxide 8, aluminum silicate 2, calcium chloride 5, water-based polymer resin 30 parts, 5 parts of silane coupling agent, 45 parts of heat conducting agent.

[0016] The thickness of the coating material is 80 μm.

Embodiment 3

[0017] Embodiment 3, solar water heater heat collector tube coating material, is formulated by the following raw material components and weight ratio: carbon powder 5, zinc powder 5, titanium dioxide 5, aluminum silicate 5, calcium chloride 5, water-based polymer resin 35 parts, 5 parts of silane coupling agent, 35 parts of heat conducting agent.

[0018] The coating material has a thickness of 200 μm.

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Abstract

The invention discloses a solar water heater heat collection pipe coating material. The material is prepared from, by weight, 8-10 parts of carbon powder, 2-6 parts of zinc powder, 8-10 parts of titanium dioxide, 2-8 parts of aluminum silicate, 2-7 parts of calcium chloride, 20-50 parts of waterborne polymer resin, 5-10 parts of silane coupling agent and 40-50 parts of heat conducting agent. The material is sprayed on the surface of a heat collection pipe to prevent a potential safety hazard brought by bursting of the heat collection pipe; and meanwhile, the polymer coating is used as a carrier of the heat conducting agent, so that the heat efficiency of inner pipe glass is improved, the heat absorption rate is high, and the heating efficiency is improved.

Description

technical field [0001] The invention relates to a solar water heater, in particular to a coating material for a heat collecting tube of a solar water heater. Background technique [0002] A solar water heater is a heating device that converts sunlight energy into heat energy, and heats water from low temperature to high temperature, so as to meet the hot water use in people's life and production. According to different structural forms, solar water heaters are divided into vacuum tube type and flat plate type. [0003] The core component of the vacuum tube solar water heater is the heat collector tube. The traditional heat collector tube is mostly a vacuum glass heat collector tube. Its basic structure includes an inner tube and an outer tube. One end of the vacuum glass heat collector tube is open. It is hemispherical, and the inner and outer tubes are evacuated into a vacuum. The surface of the inner tube is generally coated to achieve selective absorption of light. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D201/00C09D5/32C09D7/61C09D7/63F24S70/20
CPCC08K2003/0893C08K2003/162C08K2003/2241C09D5/32C09D7/61C09D7/63C09D201/00C08K13/02C08K3/04C08K3/08C08K3/22C08K3/34C08K3/16
Inventor 魏志明
Owner SICHUAN JINMING NEW ENERGY TECH
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