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http://dx.doi.org/10.5293/kfma.2015.18.2.067

Evaluation of Energy Saving with Vector Control Inverter Driving Centrifugal Pump System  

Suh, Sang-Ho (Department of Mechanical Engineering, Soongsil University)
Kim, Kyungwuk (Department of Mechanical Engineering, Soongsil University)
Kim, Hyoung-Ho (Department of Mechanical Engineering, Soongsil University)
Yoon, In Sik (Dooch Co., Ltd.)
Cho, Min-Tae (Dooch Co., Ltd.)
Publication Information
The KSFM Journal of Fluid Machinery / v.18, no.2, 2015 , pp. 67-72 More about this Journal
Abstract
The purpose of this study is to achieve energy saving effect of inverter driving multistage centrifugal pump. For determining the operation points in the pump system, the system curves should be obtained experimentally. To get the system curves, three pumps combined in parallel and one pump operated with different rotational speeds. But for variable speed pump system, energy saving rates can not be evaluated from operation efficiencies. That is why operation efficiencies, system curves, duty cycles, and input powers of the pump system were measured by the constructed experimental apparatus. The duty cycle segmented into different flow rates and weighting the average value for each segment by the interval time. The system was operated with two different periods. The mean duty cycles were collected from apartment and found that the system operated at 40% and at 50% or below capacity. Measured energy saving rate was 58.16%. Estimating method of energy saving rate could be more effective operation index than that of operation efficiency.
Keywords
Inverter driving centrifugal pump system; Operation efficiency; Variable speed drive; Energy saving rate; Duty cycle;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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