Predicting local surface heat transfer coefficients by different turbulent k-ϵ models to simulate heat and moisture transfer during air-blast chilling

2001 ◽  
Vol 24 (7) ◽  
pp. 702-717 ◽  
Author(s):  
Zehua Hu ◽  
Da-Wen Sun
Keyword(s):  
Heat Transfer ◽  
Moisture Transfer ◽  
Surface Heat ◽  
Local Surface ◽  
Transfer Coefficients ◽  
Heat And Moisture Transfer ◽  
Air Blast ◽  
Surface Heat Transfer ◽  
Heat Transfer Coefficients ◽  
Heat And Moisture

Local surface heat transfer coefficients on a model lamb carcass

2004 ◽  
Vol 61 (3) ◽  
pp. 421-429 ◽  
Author(s):  
Mark B. Harris ◽  
James K. Carson ◽  
Jim Willix ◽  
Simon J. Lovatt
Keyword(s):  
Heat Transfer ◽  
Surface Heat ◽  
Local Surface ◽  
Transfer Coefficients ◽  
Surface Heat Transfer ◽  
Heat Transfer Coefficients

scholarly journals EXPERIMENTAL MEASURES OF THE EFFECTIVE HEAT TRANSFER COEFFICIENTS IN AIR BLAST FREEZERS FOR THE PROCESSING OF FRUIT PULPS

2003 ◽  
Vol 2 (1) ◽  
Author(s):  
J. V. Resende ◽  
V. Silveira Junior ◽  
L. Neves Filho
Keyword(s):  
Heat Transfer ◽  
Surface Heat ◽  
Hydraulic Diameter ◽  
Air Cooling ◽  
Transfer Coefficients ◽  
Effective Surface ◽  
Air Blast ◽  
Surface Heat Transfer ◽  
Commercial Practice ◽  
Heat Transfer Coefficients

The effective surface heat transfer coefficients during air blast freezing of plastic polyethylene packages containing fruit pulp models conditioned inside multi layer boxes were evaluated under conditions encountered in commercial practice. The results were presented as dimensionless correlations based on hydraulic diameter of the rectangular ducts. The effects on the surface heat transfer coefficient of the air temperature, air velocity, transducer position inside the boxes and box position in the pillage on the surface were analyzed. The results show: the effect of air-cooling temperature on the surface heat transfer is negligible in the range encountered in blast freezing practice. The effective surface heat transfer coefficients predicted by the non-dimensional correlations based on hydraulic diameter was successfully used to represent the bed irregularities, mainly in arrays of 5 and 3 layers. The effective surface heat transfer coefficients varied according to the position between the top and the bottom of the boxes and was influenced by the number of layers in the arrays.

scholarly journals EXPERIMENTAL MEASURES OF THE EFFECTIVE HEAT TRANSFER COEFFICIENTS IN AIR BLAST FREEZERS FOR THE PROCESSING OF FRUIT PULPS

2003 ◽  
Vol 2 (1) ◽  
pp. 11
Author(s):  
J. V. Resende ◽  
V. Silveira Junior ◽  
L. Neves Filho
Keyword(s):  
Heat Transfer ◽  
Surface Heat ◽  
Hydraulic Diameter ◽  
Air Cooling ◽  
Transfer Coefficients ◽  
Effective Surface ◽  
Air Blast ◽  
Surface Heat Transfer ◽  
Commercial Practice ◽  
Heat Transfer Coefficients

The effective surface heat transfer coefficients during air blast freezing of plastic polyethylene packages containing fruit pulp models conditioned inside multi layer boxes were evaluated under conditions encountered in commercial practice. The results were presented as dimensionless correlations based on hydraulic diameter of the rectangular ducts. The effects on the surface heat transfer coefficient of the air temperature, air velocity, transducer position inside the boxes and box position in the pillage on the surface were analyzed. The results show: the effect of air-cooling temperature on the surface heat transfer is negligible in the range encountered in blast freezing practice. The effective surface heat transfer coefficients predicted by the non-dimensional correlations based on hydraulic diameter was successfully used to represent the bed irregularities, mainly in arrays of 5 and 3 layers. The effective surface heat transfer coefficients varied according to the position between the top and the bottom of the boxes and was influenced by the number of layers in the arrays.

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