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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.20 No.2
발행연도
2006.2
수록면
212 - 226 (15page)

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초록· 키워드

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This paper is a continuation of the authors' previous work on spiral coil heat exchangers. In the present study, the heat transfer characteristics and the performance of a spirally coiled finned tube heat exchanger under wet-surface conditions are theoretically and experimentally investigated. The test section is a spiral-coil heat exchanger with consists of a steel shell and a spirally coiled tube unit. The spiral-coil unit consists of six layers of concentric spirally coiled finned tubes. Each tube is fabricated by bending a 9.6㎜ diameter straight copper tube into a spiral-coil of four turns. The innermost and outermost diameters of each spiral-coil are 145.0 and 350.4㎜, respectively. Aluminium crimped spiral fins with thickness of 0.6㎜ and outer diameter of 28.4㎜ are placed around the tube. The edge of in at the inner diameter is corrugated. Air and water are used as working fluids in shell side and tube side, respectively. The experiments are done under dehumidifying conditions. A mathematical model based on the conservation of mass and energy is developed to simulate the flow and heat transfer characteristics of working fluids flowing through the heat exchanger. The results obtained from the present model show reasonable agreement with the experimental data.

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Abstract

Nomenclature

1. Introduction

2. Experimental Apparatus and Method

3. Mathematical Modelling

4. Solution Methodology

5. Results and Discussion

6. Conclusions

Acknowledgements

References

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