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| Numerical Model for Micro-channel Parallel Flow Evaporator |
| LIANG Yuan-Yuan, ZHAO Yu, CHEN Jiang-Ping |
| (Institute of Refrigeration and Cryogenics, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract A distributed parameter model for the micro-channel parallel flow evaporator was developed. Elements are divided into dry condition and wet condition, and the ε-NTU (efficiency-number of transfer units) method is used to calculate the heat transfer rate. Different two-phase heat transfer correlations were compared and the model was verified by experiment. The results show that the model using Kandlikar’s correlation obtains the highest precision, the calculated mean deviation is 3.64%. The model can predict airside and refrigerant side pressure drop within ±10% and ±15% respectively. The model is an effective analytical method for the parallel flow evaporator development.
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Received: 12 April 2012
Published: 28 March 2013
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