Analysis on the Heat Efficiency of Hot-Air Drying System
- DOI
- 10.2991/eers-15.2015.3How to use a DOI?
- Keywords
- drye; conveyor; hot-air drying; thermal efficiency; moisture; mass transfer
- Abstract
Conveyor-belt hot-air drying equipment was developed and used in this study to investigate the feasibility of new heat-efficiency-improvement technology. This novel technology reduces the amount of heat generated by the heater in the new hot-air drying furnace. Sludge sample types A and B used in the study were obtained from a city water treatment plant. Samples that had undergone first-stage dehydration were collected frequently during the experimental period. The result from analyzing the total moisture content in the sludge showed that the average total moisture content detected in Type A sludge samples was 35.12% and that in Type B samples was 51.3%. These samples were treated using various temperatures and hot-air supply rates. Evaluation of the drying efficiency of the conveyor-belt hot-air drying system using the Freeman-Carroll method, showed that the drying rate remained constant with temperature and power. Although Type B samples were dried at high temperature, their drying rates were similar to those of Type A samples, which could be dried at lower temperature. This was because of the drying effectiveness of the hot-air as well as the steady temperature inside the dryer equipment.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Sangan Ha AU - Dongkyun Kim AU - Jeipil Wang PY - 2015/09 DA - 2015/09 TI - Analysis on the Heat Efficiency of Hot-Air Drying System BT - Proceedings of the 2015 International Conference on Environmental Engineering and Remote Sensing PB - Atlantis Press SP - 9 EP - 12 SN - 2352-538X UR - https://doi.org/10.2991/eers-15.2015.3 DO - 10.2991/eers-15.2015.3 ID - Ha2015/09 ER -