earticle

영어

Desiccant wheels are used in commercial and industrial applications to perform air dehumidification operations by utilizing low grade heat source. Software provided by the manufacturer is used to select a honeycombed rotary desiccant wheel as per requirements of the client on the website by Novel Air Technologies. The performance of the software has been verified by comparing the results obtained by the software with those published in reputed journals. Using the software, the performance of an adiabatic rotary dehumidifier is parametrically studied and the optimal rotational speed is determined by examining the moisture removed by process area in the desiccant wheel. Also the effect of air flow rate on the reactivation air and process air has been studied. The basic parameters for a particular wheel of thickness 200 mm and diameter 550 mm are: ambient air at 30 0C DBT and 17 g/kg humidity ratio, process air flow rate vary between 1.5 m/s to 5.5 m/s, reactivation air flow rate lies between 1.5 m/sec to 5.5 m/sec and rotational speed of wheel varies from 10 RPH to 40 RPH. On the basis of results the following recommendations have been made: It was observed that for low velocity of process air (1.5 m/s to 2.5 m/s), 10RPH and 20RPH are found to be optimum for operation. In case of high velocity (>2.5), little effect of RPH is observed, however the most optimum RPH is found to be 20. For both high and low reactivation inlet velocity, 20 RPH is the most optimum rotation speed. However, the best results are observed at 3.5m/s to 4.5m/s reactivation inlet velocity.