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High Performance Evaporator Development
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English
Abstract
This paper is an introduction to the design, development and heat transfer performance of a new drawn-cup plate evaporator for the refrigerant cycle of automotive air conditioning systems. This evaporator is characterized by the tank section at one side alone and U-turn refrigerant path in each tube. This system has reduced dead space and has superior overall heat transfer coefficient. Therefore, we expected that its potential performance would be much higher than any other conventional type. But, while developing it, we encountered some serious structural problems which affected the flow of the refrigerant and heat transfer in the U-turn sections. We isolated the causes of the performance degradation by analizing the refrigerant flow behavior in these sections. With this type of evaporator we finally achieved our target of 15% improved performance compared with the serpentine tube evaporator.
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Citation
Ohara, T. and Takahashi, T., "High Performance Evaporator Development," SAE Technical Paper 880047, 1988, https://doi.org/10.4271/880047.Also In
References
- Otake K. “Applied Techniques of Sensors to the Thermal Engineering” Science of Machine 37 7 829 834 July 1985
- Sekoguchi K. “The Basic Study of Two-phase Flow Measurement with a Optical Fiber Probe Having Flat Surface” Transaction of the Japan Society of Mechanical Engineers 834 9 37 40 1984
- Mine T. Fuzii K. “The Study on Miter-Bent Flow” The Society of Heating, Air Conditioning and Sanitary Engineers of Japan 21 43 54 Feb 1983