Composite black porcelain solar heat collecting plate and production method thereof

Abstract

The invention relates to a composite black porcelain solar heat collecting plate and a production method thereof. The composite black porcelain solar heat collecting plate is solid and consists of a base layer of ordinary ceramic layer 1 and a surface layer of black porcelain heat collecting layer 2, and the two layers are fired into one. The method of the invention comprises the steps of preparing common ceramic powder and black porcelain powder respectively, secondary distribution, drying and firing. The composite black porcelain solar heat collecting plate of the present invention has a simpler structure and is easier to install. The common ceramic layer 1 of the base layer and the black porcelain heat collecting layer 2 of the surface layer are fired into one body, and the internal structure is firm. Combined, it is easy to achieve integration with the building. The method of the present invention can adopt the ordinary ceramic brick roller kiln firing process, can utilize existing equipment to carry out continuous production, is easy to control, and has low cost and large output, can meet large-scale needs, and is low-cost and large-scale development and utilization. Solar energy creates even more favorable conditions.

Description

technical field [0001] The invention relates to a manufacturing method of a solar heat collecting plate, in particular to a composite black porcelain solar heat collecting plate composed of an ordinary ceramic layer and a black porcelain heat collecting layer and a production method thereof. Background technique [0002] As the earth's fossil fuel resources are gradually depleted, it is an urgent task for mankind to find new large-scale alternative energy sources within a limited time. [0003] The energy of the sun is very huge, and the total amount of radiant energy to the earth's land surface is tens of thousands of times larger than the total amount of various energy sources consumed on the earth. Therefore, solar energy is one of the main ways of large-scale alternative energy sources. However, since solar energy is a low-density energy source, a collector with a huge area is required to collect solar energy. The cost of solar energy utilization is mainly determined by ...

AI Technical Summary

Problems solved by technology

However, since solar energy is a low-density energy source, a collector with a huge area is required to collect solar energy. The cost of solar energy utilization is mainly determined by the collector. The key is the cost, life, and efficiency of the collector. At present, the most widely used solar collector is the tube-sheet type Heat collectors and vacuum tube heat collectors have complex production processes, high energy consumption, high manufacturing costs, easy decline in heat collection efficiency, and short service life; at the same time, with the development of social economy, the building roof area in urban and rural A substantial increase, the solar collector must be integrated with the building in order to obtain greater development space, the existing solar collector is restricted by the material and structure of the solar collector, it is difficult to realize the integration with the building, so Traditional solar collectors cannot completely make solar energy a large-scale alternative energy source. It is necessary to find a solar collector with low price, long service life and almost no decline in heat collection efficiency for long-term use, so as to make solar energy a large-scale alternative energy source. alternative energy

In view of this, there have been various designs of ceramic solar collector panels, such as the manufacturing method of composite ceramic hollow solar collector panels (patent No. ZL200610044299.6), black porcelain composite ceramic solar panels (patent application No. ), manufacturing methods and application products of large-size hollow ceramic plates (patent application number 200710014778), ceramic mud grouting forming composite ceramic solar panels (patent application number 2009100142228), etc. These technologies are based on ordinary ceramic raw materials and vanadium-titanium black porcelain or Traditional black porcelain produces black or dark hollow ceramic solar collector panels on the surface. These technologies have the characteristics of low production cost, long service life, high heat collection efficiency and almost no attenuation after long-term use, and can manufacture solar collectors. Heaters and solar water heaters are more suitable for building ceramic solar roofs and sunny walls. They share the waterproof layer and thermal insulation layer with the building. They are integrated with the building and have the same lifespan as the building. They can provide low-cost hot water. Summer Air conditioning, winter warm air, combined with the scale and quantity of China's existing ceramic industry, make it possible for solar energy to become a large-scale alternative energy source. The manufacturing process is relatively complicated, and there are many interfaces between the heat collecting plates, the installation is more troublesome, and water leakage may occur after a period of use; and the hollow heat collecting plates cannot be installed horizontally when installed on the roof of a flat building. A certain inclination is required during installation, and bracket support and connection are required, which increases the installation cost; there is also the problem of inconvenient cleaning

The above are the main problems restricting the rapid development of ceramic solar collector panels

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