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http://dx.doi.org/10.7736/KSPE.2016.33.6.517

Signal Analysis of Inverter-Type Outdoor Unit for Detecting Operation Changes of Commercial Refrigerator  

Lim, Hyo Joon (Department of Mechanical Engineering, Pusan National University)
Lee, Ju Kyoung (Department of Mechanical Engineering, Pusan National University)
Hwang, Jun Hyeon (SAC R&D Laboratory, LG Electronics)
Lee, Kyung Chang (Department Control and Instrumemtation Engineering, Pukyoung University)
Lee, Suk (Department of Mechanical Engineering, Pusan National University)
Publication Information
Journal of the Korean Society for Precision Engineering / v.33, no.6, 2016 , pp. 517-523 More about this Journal
Abstract
Unlike household refrigerators, commercial refrigerators are composed of separate indoor and outdoor units. The outdoor unit of most commercial refrigerators is designed to run at a fixed speed, which results in low energy efficiency and loud fan noise. Moreover, it cannot respond flexibly to changing thermal load in the indoor unit. Inverter type outdoor units can address such problems through speed changes based on information obtained from the indoor unit. However, using two units from different manufacturers is often not a viable solution. If condition changes in the indoor unit can be detected without communication between the two units, it is possible to adjust the speed of the outdoor unit. This paper attempts to analyze the signal from the outdoor unit when the condition of the indoor unit changes by varying the thermal load.
Keywords
Outdoor-Unit; Inverter-Frequency; Compressor; Multi-Refrigeration system; Signal-Analysis;
Citations & Related Records
Times Cited By KSCI : 10  (Citation Analysis)
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