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Mineral oil residues on HVAC components: measuring methods

机译:HVAC组件上的矿物油残留物:测量方法

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摘要

A method to determine the amount of oil residues on heating-, ventilating- and air-conditioning(HVAC)-component surfaces was developed and validated. The sampling was based on two swiping methods and a filter contact method. Infrared spectrometry was utilised in the analyses. For the tested mineral oil the filter contact method showed the best recovery of the sampling 91 +- 2%. The oil concentration is quite high but unequally distributed (530-960 mg/m~2) on the surface of the sheet metal treated with corrosion protection oil and low on the sheets treated with chromic acid (< 2-29 mg/m~2). Oil concentration of studied HVAC components (14-196 mg/m~2) was dependent on the technique used for manufacturing the component.
机译:开发并验证了一种确定加热,通风和空调(HVAC)组件表面上的残油量的方法。采样基于两种刷卡方法和过滤器接触方法。分析中使用了红外光谱。对于测试的矿物油,过滤器接触法显示出91±2%的最佳回收率。油浓度很高,但在用防腐油处理过的金属板表面上分布不均匀(530-960 mg / m〜2),而在用铬酸处理过的金属板上则较低(<2-29 mg / m〜2) )。研究的HVAC组件的油浓度(14-196 mg / m〜2)取决于用于制造该组件的技术。

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