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Volume 61 | Number 2 | Year 2018 | Article Id. IJETT-V61P218 | DOI : https://doi.org/10.14445/22315381/IJETT-V61P218
Theoretical Analysis of Mass and Heat Transfer through a Dehumidifying Plastic Dryer
Adeyanju Anthony A
Citation :
Adeyanju Anthony A, "Theoretical Analysis of Mass and Heat Transfer through a Dehumidifying Plastic Dryer," International Journal of Engineering Trends and Technology (IJETT), vol. 61, no. 2, pp. 106-116, 2018. Crossref, https://doi.org/10.14445/22315381/IJETT-V61P218
Abstract
Dehumidification of plastics resin is utilized to minimize or eliminate problems that may be caused by too much or too little moisture in a plastic material during processing. The extent to which moisture affects the quality of a molded or extruded part is determined by the specific plastic resin being processed and the intended purpose of the part. Regardless, it is highly probable that improper or incomplete drying of the raw material will create problems, whether during processing or when the product is in use, or worse. Theoretical analysis was carried out on a dehumidify dryer and solution was developed for the problem of simultaneous heat and mass transfer for steady flow in the dehumidifying dryer with a portion of the bed occupied by a porous desiccant medium. The close form modeling of the bed was found to be dependent on the physical characteristics of the channel and the desiccant together with the fluid to solid mass transfer within the void fraction. The moisture-loss analysis of a dehumidifying dryer bed and airflow of a dehumidifying dryer was considered to be another fundamental drying parameter. It was discovered that enough airflow is needed through the drying hopper to maintain the plastic pellets at the desired drying temperature for the desired amount of drying time.
Keywords
Dehumidification, Dryer, Porous media, Plastic pellet, Desiccant
References
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