Parallel Operation Characteristics Analysis of Water Chiller of Uniform Load Distribution
Large-scale water chiller operates under partial load at most of the time,studying the law of compressor energy efficiency ratio(EER) varying with load ratio can provide fundamental basis for the chiller running in high efficiency that.The mathematical model to determine EER,evaporating temperature...
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| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2006-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2006.06.010 |
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| Summary: | Large-scale water chiller operates under partial load at most of the time,studying the law of compressor energy efficiency ratio(EER) varying with load ratio can provide fundamental basis for the chiller running in high efficiency that.The mathematical model to determine EER,evaporating temperature and condensing temperature of single water chiller was proposed in this paper.Under the uniform load distribution condition,the mathematical model of EER with multiple same type units but different parallel operation modes was established according to different ways of bearing partial load,the operating characteristic of units were also analyzed.The results showed that the centrifugal water chiller can maintain higher EER only at 70%-100% load ratio,EER decreases sharply with the decrease of load ratio,the units' operation is controlled by single unit's load rating according to total load reduction,which can keep the total EER at high level within a wide load range. |
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| ISSN: | 0253-4339 |