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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한설비공학회 International Journal of Air-Conditioning and Refrigeration Journal Of Air-Conditioning and Refrigeration Vol.6
발행연도
1998.8
수록면
27 - 35 (9page)

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An experimental study was performed to investigate the optimum cycle of an inverter heat pump as a function of frequency. The performance of the inverter heat pump with the rated cooling capacity of 4,141W(3,550㎉/h) was measured with a variation of frequency, indoor and outdoor temperature, and length of capillary tube in the psychro-metric test room. As a base case, the inverter heat pump with the standard capillary length of 1,000㎜(optimum size for the frequency of 60㎐) and ASHRAE Test condition "A" was tested by varying frequency from 30㎐ to 80㎐. Then, the optimum cycles were investigated by varying the length of capillary tube at each frequency level of 30, 60 and 80㎐. Based on the experimental data, the change of system characteristics between the optimum and the base case were analyzed for each selected frequency level. Generally, for low frequency level (30㎐), the longer length of the capillary tube compared with the standard size showed the higher energy efficiency ratio(EER), while for high frequency level(80㎐) the shorter length of the capillary tube showed the higher EER.

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Abstract

1. Introduction

2. Experimental Setup and Test Procedure

3. Results and Discussion

4. Conclusions

Acknowledgement

References

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