本文研究了自动连续调节制冷剂加注量对DX组合式空调制冷量和能效的影响。在实验室中，通过分析能源效率来确定基线性能参数，因为在一系列操作条件下，制冷剂加注水平被手动调整为高于或低于制造商铭牌上的加注量。然后，在现场的一个成套装置上安装了自动充电调节控制装置和性能监测系统。在现场安装中，居住者或维修技术人员不太可能注意到冷却能力的小损失，尤其是在机组通常过大的情况下，但随之而来的能效损失可能会显著增加能源成本。 充量控制利用一种相关策略，随着工作条件的变化，通过增加或减少接收器中的液体制冷剂的质量来最大限度地提高能效。结果表明，存在显著提高效率的潜力。得出的结论是，连续调节制冷剂加注量可以提高能效，尤其是在远离工厂IER额定条件的运行条件下。充注控制器成功检测并补偿了制冷剂充注不足或过量，并最大限度地提高了能效。与恒定标称电荷的EER相比，连续调谐可使EER增益高达40%。引文:2017年冬季会议，内华达州拉斯维加斯，会议论文

This paper reports on an investigation of the effectiveness of automated continuous adjustment of refrigerant charge level on DX packaged air-conditioner cooling capacity and energy efficiency. In the laboratory, baseline performance parameters were established by analyzing energy efficiency as refrigerant charge level was manually adjusted above and below the manufacturer nameplate charge amount at a range of operating conditions. Then, automated charge tuning controls along with a performance monitoring system were installed on a package unit at a field site. In a field installation, a small loss of cooling capacity is not likely to be noticed by occupants or service technicians, especially where units are commonly oversized, but the concomitant loss of energy efficiency can significantly increase energy cost. The charge control utilizes a relational strategy to maximize energy efficiency by increasing or decreasing the mass of liquid refrigerant held in the receiver as operating conditions change.Results show the potential exists for significant efficiency enhancement. It is concluded that continuous refrigerant charge adjustment can improve energy efficiency, especially at operating conditions distant from the factory IEER rating conditions. The charge controller successfully detected and compensated for inadequate or excessive refrigerant charge and maximized energy efficiency. Continuous tuning resulted in EER gains of up to 40% compared with the EER with a constant nominal charge.