Rate of precipitation of calcium phosphate on heated surfaces.
Fouling of a heated stainless steel surface by calcium phosphate precipitation has been studied in an annular flow apparatus, instrumented to provide a constant heat flux while measuring local metal-surface temperatures. Models of the heat and mass-transfer boundary layers are used to estimate interfacial temperatures and concentrations, from which the heterogeneous reaction rate is inferred. The analysis indicates that the reaction rate is a function of both chemical kinetics and mass transfer limitations.
Barton
K P
KP
University of Wisconsin-Madison, Madison, WI 53706.
Chapman
T W
TW
Lund
D
D