环境箱用途：
Application of environmental chamber
环境箱可以提供标准的测试环境（如指定的温度、相对湿度、空气置换率和气流速度）或模拟真实的室内环境，并测试各种室内材料和产品的污染物释放率和释放特性，进而可以：
Environmental chamber can provide standard test environment (such as appointed temperature, relative humidity, air exchange rate and air velocity) or simulate real indoor environment. It can be used to test the emission rate of contaminants from various indoor materials and products and the emission features so as to further:
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确定环境变量对材料和产品释放率和释放特性的影响；
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determine the influence of environment variables on the emission rate and emission features of materials and products
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根据释放特征划分材料和产品的等级；
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graduate materials and products according to their emission features
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开发和验证预测室内空气污染的模型；
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develop and verify models used to predict indoor air pollution
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根据室内污染物数据或预测模型对室内空气质量（IAQ）进行评价；
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value indoor air quality (IAQ) according to indoor contaminant data or prediction models
环境箱的测试原理：
Test principles of the environmental chamber
环境箱测试污染物释放的过程可以概述为：将材料和产品或其样本置于测试箱中，根据需要调节箱中的温度、相对湿度和空气置换率等环境条件；在环境箱的排气口或内部取样；采用适当的方法分析气体样本，识别主要的污染物及其浓度随时间的变化；然后根据测量的浓度确定材料和产品的释放率和释放特性。
The process for the environmental chamber to test the emission of contaminants can be summarized as: put materials and products or their samples into the test chamber, and then adjust the environmental conditions such as temperature, relative humidity and air exchange rate inside the chamber according to requirements, and then take samples at the air outlet of the environmental chamber or from the inside, and then adopt proper methods to analyze the air sample so as to identify the main contaminants and changes of their densities with times, and finally determine the emission rate and emission features of materials and products according to the tested densities.
