Temperature single-stage drying systems

Table V. Drying Temperatures and Performance Characteristics of Insulated and Uninsulated Single-Stage Drying Systems.

Table VI. Effect of Insulation on Operating Temperatures and Energy Consumption of a Single-Stage Drying System.a...

The thermal efficiency of a two-stage system is better than that of a single unit because the temperature of the outlet air is lower, about 80°C, instead of 100°C or more in a single unit. This allows the use of a higher inlet air temperature without degradation of the dried material. 

Resin Flow Submodel. Resin flow analysis in a manufacturing process provides estimates of resin flow, and fiber and resin distribution and compaction. In the early stage of the autoclave process, after the prepregs are staked and vacuum hagged, the system is pressurized while the temperature is increased in order to minimize the resin viscosity. In this way the resin flow removes the excess resin from adjacent plies and makes uniform the fiber distribution. In the RTM process the dry fibers inside the mold can be considered as a porous medium through which the resin is injected from a single or multiple inlets Darc/s law can he used to perform a two-dimensional flow analysis. Darcy s law can he written as... 

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