紧凑型热交换器的一个缺点是歧管中液体分布不均匀。通过改善制冷剂液体在换热器管之间的分布，有很大的机会改善这种紧凑型换热器的性能。为了做到这一点，需要开发一种测量换热器管之间液体分布的有效方法。本文介绍了一种采用创新技术测量每根换热器管中液体流量的装置的特点。使用安装在称重传感器上的收集罐，采用分批法测量流速。试验段入口的总液体流量与各流量之和之间的质量平衡在10%以内。就测量不均匀性而言，仪器的重复性范围为–4。 9%至+2.8%，基于三次重复的平均值。该装置是一个有用的工具，可用于量化紧凑型热交换器歧管中液体不均匀分布的影响，进而有助于更好地了解不均匀分布的原因以及如何纠正。这将是未来论文的主题。单元:双引文:研讨会，ASHRAE交易，第108卷，第。2.

One drawback to the implementation of compact heat exchangers is nonuniform distribution of liquid in the manifold. There is a significant opportunity to improve the performance of this type of compact heat exchanger by improving the distribution of refrigerant liquid among the heat exchanger tubes.In order to do that, an effective means of measuring the liquid distribution among the heat exchanger tubes needs to be developed. This paper presents the features of an apparatus that uses an innovative technique to measure the liquid flow rate in each heat exchanger tube. The flow rates were measured using collection tanks mounted on load cells using a batch method. The mass balance between the overall liquid flow rate at the inlet to the test section and the sum of the individual flow rates was within 10%.T he repeatability of the apparatus, in terms of measuring the nonuniformity, ranged from –4.9% to +2.8% based on the average value of three repetitions.This apparatus is a useful tool to quantify the effects of nonuniform distribution of liquid in the manifolds of compact heat exchangers, which, in turn, will lead to a better understanding f the causes of maldistribution and how to correct it. This will be a topic of future papers.Units: Dual