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Experimental Analysis and Performance Evaluation of Solid Desiccant Dehumidifier Using Silica Gel


Affiliations
1 Mechanical Engineering Department, Aligarh Muslim University, Aligarh, India. 202002, India
 

Simple and Economical method to produce dehumidification is by solid desiccant wheel with a desiccant material (silica gel) which attract moisture from moist air. Experimental analysis of the working of the dehumidifier desiccant wheel is indicated in this work with actual thought to the performance deviation as a function of airflow rates at the process side and ambient temperature for hot and humid conditions. The silica gel is reactivated by an electric heater which is fixed in the reactivation portion. Flow rates of the air have been varied (that is, 2.8, 3.5, 4.5, & 5.2 m/s) at the process section of the desiccant wheel, while on the reactivation section, airflow rate is constant (i.e., 2.8m/s). At various ambient temperatures (i.e., 32, 33, 34, & 35°C) and various airflow rates, performance parameters also analyzed like Moisture Removal Capacity (MRC), Dehumidification Coefficient of Performance (DCOP), dehumidification effectiveness, and Sensible Energy Ratio (SER). We observed that the optimum values of these performance parameters in this work are obtained at 3.5m/s air velocity at the process section and 34℃ ambient temperature. Optimum values of these parameters show a decrease in energy used and improved air quality in the conditioned space.
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  • Experimental Analysis and Performance Evaluation of Solid Desiccant Dehumidifier Using Silica Gel

Abstract Views: 142  |  PDF Views: 88

Authors

Zafar Alam
Mechanical Engineering Department, Aligarh Muslim University, Aligarh, India. 202002, India
Taliv Hussain
Mechanical Engineering Department, Aligarh Muslim University, Aligarh, India. 202002, India

Abstract


Simple and Economical method to produce dehumidification is by solid desiccant wheel with a desiccant material (silica gel) which attract moisture from moist air. Experimental analysis of the working of the dehumidifier desiccant wheel is indicated in this work with actual thought to the performance deviation as a function of airflow rates at the process side and ambient temperature for hot and humid conditions. The silica gel is reactivated by an electric heater which is fixed in the reactivation portion. Flow rates of the air have been varied (that is, 2.8, 3.5, 4.5, & 5.2 m/s) at the process section of the desiccant wheel, while on the reactivation section, airflow rate is constant (i.e., 2.8m/s). At various ambient temperatures (i.e., 32, 33, 34, & 35°C) and various airflow rates, performance parameters also analyzed like Moisture Removal Capacity (MRC), Dehumidification Coefficient of Performance (DCOP), dehumidification effectiveness, and Sensible Energy Ratio (SER). We observed that the optimum values of these performance parameters in this work are obtained at 3.5m/s air velocity at the process section and 34℃ ambient temperature. Optimum values of these parameters show a decrease in energy used and improved air quality in the conditioned space.

References