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A Mass Flow Rate Correlation for Refrigerants and Refrigerant Mixtures Flowing Through Short Tubes
A correlation was developed to predict the mass flow rate of R-12, R-134a, R-502, R-22, R-407C, and R-410A through short tubes. Short tube lengths ranged from 9.5 mm to 25.4 mm, and sharp edged diameters ranged from 1.09 mm to 1.94 mm. The correlation covered both single-phase and two-phase entrance conditions under approximately choked flow. The correlation consists of nondimensional parameters that are a function of upstream conditions, downstream conditions, short tube geometry, and critical point pressure/temperature. The correlated data were drawn from previous work and work performed during this investigation. The general form of the correlation was a function for single-phase flow multiplied by a function incorporating parameters for two-phase flow. Over 1200 data points were used to produce the correlation.
A Mass Flow Rate Correlation for Refrigerants and Refrigerant Mixtures Flowing Through Short Tubes
A correlation was developed to predict the mass flow rate of R-12, R-134a, R-502, R-22, R-407C, and R-410A through short tubes. Short tube lengths ranged from 9.5 mm to 25.4 mm, and sharp edged diameters ranged from 1.09 mm to 1.94 mm. The correlation covered both single-phase and two-phase entrance conditions under approximately choked flow. The correlation consists of nondimensional parameters that are a function of upstream conditions, downstream conditions, short tube geometry, and critical point pressure/temperature. The correlated data were drawn from previous work and work performed during this investigation. The general form of the correlation was a function for single-phase flow multiplied by a function incorporating parameters for two-phase flow. Over 1200 data points were used to produce the correlation.
A Mass Flow Rate Correlation for Refrigerants and Refrigerant Mixtures Flowing Through Short Tubes
Payne, Vance (author) / O'Neal, Dennis L. (author)
HVAC&R Research ; 10 ; 73-87
2004-01-01
15 pages
Article (Journal)
Electronic Resource
Unknown
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