An analysis of moist air energy potential during the process of paper band drying
2006
Valent, V., Univerzitet u Beogradu, Beograd (Serbia). Tehnolosko-metalurski fakultet | Krgovic, M., Univerzitet u Beogradu, Beograd (Serbia). Tehnolosko-metalurski fakultet | Nikolic, S., Univerzitet u Beogradu, Beograd (Serbia). Tehnolosko-metalurski fakultet
The energy potential of moist air venting from the dryer of the installation for drying paper bands was analysed. The thermodynamic state of air is defined by the air temperature at the outlet of the dryer and the dew temperature of the air. For the temperature at the outlet of the dryer (55-85 deg C) and selected dew temperatures (45-65 deg C), the specific consumption of dry air was determined. For selected kinetics of paper band drying 10-35 kgH2O/(square meter h), the modification of energy potential of the air as a function of air temperature at the outlet of the dryer and the temperature of dew air was specified. The air flow through the dryer was also correlated with the operation of the ventilation system and recuperation of the energy. An analysis of the thermodynamic state of moist air venting from the dryer and the calculation of its energy potential confirmed that increase of the dew temperature of the air decreases its energy potential. With the increasing dew temperature, the specific consumption of dry air decreases as well as the relative humidity of the air.
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