GB/T 34334-2017 in English
VALIDTest method of mirror shape for solar collector
- Issued on:2017-10-14
- Implemented on:2018-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$194.00
《GB/T 34334-2017光热玻璃反射镜面形测试方法》由TC447（全国工业玻璃和特种玻璃标准化技术委员会）归口，主管部门为中国建筑材料联合会。
Introduction
GB/T 34334—2017 Professional Interpretation of Photothermal Glass Reflector Surface Test Method
Standard Overview
The National Standard of the People's Republic of China GB/T 34334—2017 "Photothermal Glass Reflector Surface Test Method" specifies the photothermal reflector surface test method based on the fringe reflection principle, including terms and definitions, symbols, test principles, instrument requirements and test process.
Background of Standard Formulation
With the rapid development of solar thermal technology, the demand for high-precision photothermal glass reflectors is growing. In order to ensure the performance of the photothermal system, this standard came into being, aiming to standardize the reflector surface test method and provide a unified technical basis for production and application.
Technical Points Analysis
| Test Parameters | Definition | Calculation Formula | Application Scenarios |
|---|---|---|---|
| Surface Height Deviation (HD) | Deviation between the actual surface and the ideal surface in the reference direction | $HD = \sqrt{\frac{1}{n} \sum_{i=1}^{n} hd_i^2}$ | Evaluate mirror flatness and ensure reflection accuracy |
| Tilt Deviation (SDX, SDY) | Angle between the actual surface normal and the ideal direction | $SD_{X/Y} = \beta'_{X/Y} - \beta_{X/Y}$ | Analyze mirror installation errors and optimize reflection effects |
| Focus deviation (FDX, FDY) | The distance between the actual focus and the ideal position | $FD_{X/Y} = 2 \times SD_{X/Y} \times L$ | Evaluate the optical performance of the reflector to ensure heat collection efficiency |
Practical application case analysis
Taking the trough solar thermal system as an example, the test found that the root mean square height deviation (HD) of a batch of reflectors was 0.2mm, which met the standard requirements. By optimizing the installation process, the root mean square of the tilt deviation (SDX/Y) was reduced from 0.8mrad to 0.5mrad, significantly improving the heat collection efficiency.
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