Desain Sistem Kendali untuk Pengering Gabah dengan Kolektor Surya dan Penyimpan Panas
| Autor: | Fakhrul Irfan Khalil, Leopold O. Nelwan, I. Dewa Made Subrata |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Journal Keteknikan Pertanian, Vol 04, Iss 1, Pp 87-96 (2016) |
| ISSN: | 2338-8439 2407-0475 |
| Popis: | The main problem in the solar drying is the fluctuation of solar radiation that causes drying process takes place un-continuously. The purpose of this research was to design a control system in a grain dryer model using solar collectors and water as a heat storage so that the drying process model, heat storage and its utilization can take place effectively and efficiently. The control method used the ON-OFF control system based on microcontroller ATmega 16. The control system algorithm was based on comparison among air equilibrium moisture content (Me) of environment, Me in the drying chamber and the potential air Me. The results showed that the control system worked well on grain dryers system using solar collectors and water as the medium of heat storage.The average ambient air temperature of 35.6oC, RH of 51.3%, plenum of 35.4oC and the total radiation of 1.66 kWh/m2, the system could dried 5 kg of grains at the top level from initial moisture content of 42.5% d.b to 18.3% d.b and at the bottom level of 42.2% d.b to 16.1% d.b during 10 hours. The water temperature rise although still used, from 32.1oC to the maximum reached 44.2oC and the remaining of 38.8oC. |
| Databáze: | OpenAIRE |
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