A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance of Chilled-Water Cooling Coils
A model capable of predicting the performance of wavy-fin-tube chilled-water cooling coils has been developed. It includes formulas for calculating the heat transfer coefficients and pressure drops on the air and water sides of the coil, as well as a procedure for calculating the condensation rate on the air side. The model was tested by comparing its predicted heat transfer rates and pressure drops with experimental data from the literature. The heat transfer rates were predicted to within 5% of the experimental value for seven corrugated-fin coils representing a wide range of geometries. Air-side pressure drop predictions were less accurate. The model was able to predict the air-side pressure drop within 25% for three of four coils whose geometrical parameters were within the range of applicability of the model. A parametric study of the effects of various water- and air-side geometric factors revealed that the choice of coil circuiting can affect the heat transfer performance by as much as 90%. Water-side turbulence promoters were effective in improving the performance of coils that operate at low water velocities. For a given fin surface area, coils with more tube rows tend to perform better than do coils with greater fin densities.
Performance of Chilled-Water Cooling Coils
A model capable of predicting the performance of wavy-fin-tube chilled-water cooling coils has been developed. It includes formulas for calculating the heat transfer coefficients and pressure drops on the air and water sides of the coil, as well as a procedure for calculating the condensation rate on the air side. The model was tested by comparing its predicted heat transfer rates and pressure drops with experimental data from the literature. The heat transfer rates were predicted to within 5% of the experimental value for seven corrugated-fin coils representing a wide range of geometries. Air-side pressure drop predictions were less accurate. The model was able to predict the air-side pressure drop within 25% for three of four coils whose geometrical parameters were within the range of applicability of the model. A parametric study of the effects of various water- and air-side geometric factors revealed that the choice of coil circuiting can affect the heat transfer performance by as much as 90%. Water-side turbulence promoters were effective in improving the performance of coils that operate at low water velocities. For a given fin surface area, coils with more tube rows tend to perform better than do coils with greater fin densities.
Performance of Chilled-Water Cooling Coils
Mirth, David R. (author) / Ramadhyani, Satish (author)
HVAC&R Research ; 1 ; 160-171
1995-04-01
12 pages
Article (Journal)
Electronic Resource
Unknown
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