ABSTRACT
Since impingement yields very high heat or mass
transfer rates, it is a popular system for convective
drying when rapid drying or small equipment is de-
sired. High production capacities are attained at the
expense of increased capital and operating expenses
because of the more complex fabrication and in-
creased air-handling requirements. Impinging jet dry-
ing is recommended only if a major fraction of the
moisture to be removed is unbound. If the drying rate
is internal diffusion controlled, the high heat transfer
in
product degradation if the product is heat-sensitive.
