Experimental Investigation of In-Tube Condensation of Low GWP Refrigerant R450A using a Fiber Optic Distributed Temperature Sensor

International Journal of Refrigeration(2019)

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摘要
•Condensation behavior of R450A is investigated in a 4.7 mm mini-channel.•Heat transfer coefficients of R450A are on average 5% lower than R134a.•Pressure drop values of R450A are on average 8% higher than R134a.•Predictive capability of existing models is tested against R450A data.•Viability of distributed fiber optic temperature sensors is investigated.
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关键词
Low GWP,Refrigerant,R450A,R134a,Condensation,Fiber optic sensor
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