An 8" (200 mm) nominal diameter orifice plate assembly with a nominal diameter ratio, β, of 0.4 was tested in gaseous phase carbon dioxide (CO_2). The assembly had been calibrated in water using the TUV SUD NEL water flow test facilities at East Kilbride in Scotland. The orifice plate assembly incorporated flange tappings, with additional downstream tappings used for measurement of pressure loss ratio. The test loop was filled with nitrogen, evacuated and then filled with CO_2 up to a pressure of 20 barg giving an estimated composition of 99.6% CO_2 by mol. Testing was carried out at 20 barg and 15 barg with additional test points at 12 barg. Data on pressure loss ratio was collected from the orifice plate. A correlation for pressure loss ratio in gas based on theory has been obtained, which deviates from the experimental data by only 0.0008, but further work with different orifice plate diameter ratios, pipe sizes and gases is required to prove the correlation.
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机译：在气相二氧化碳（CO_2）中测试具有标称直径比β的8“（200mm）标称直径孔板组件为0.4。使用TUV SUD NEL水流测试设施在水中校准了组件。 在苏格兰的东千锭。孔板组件内的凸缘刺激，具有用于测量压力损失比的额外下游刺激。试验回路用氮气填充，然后填充到20巴的压力，然后填充20巴的压力，给出估计的组合物 Mol的99.6％CO_2。测试是在20巴格和15巴格中进行的，并且在12巴格下进行额外的测试点。从孔板收集压力损失比的数据。基于理论的气体压力损失比的相关性 获得的，其仅偏离实验数据仅0.0008，但进一步与不同的孔板直径比，需要管尺寸和气体来证明相关性。
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