|
Design and Development of Heat Pump Drying System for Soybean Seeds |
|---|---|
| รหัสดีโอไอ | |
| Creator | Arnon Saicomfu |
| Title | Design and Development of Heat Pump Drying System for Soybean Seeds |
| Contributor | Pinit Jirakkakul, Paphatsorn Wattanakulpakin, Wichai Opanukul, Tanapong Sanchum, Akkaparp Panpoom, Anucha Chaochot, Niruth Boonya |
| Publisher | Thai Socity of Agricultural Engineering |
| Publication Year | 2566 |
| Journal Title | Thai Socity of Agricultural Engineering Journal |
| Journal Vol. | 29 |
| Journal No. | 1 |
| Page no. | 8-17 |
| Keyword | Heat pump, Soybean, Seed drying |
| URL Website | https://li01.tci-thaijo.org/index.php/TSAEJ/index |
| Website title | Thai Socity of Agricultural Engineering Journal |
| ISSN | 2651-222X |
| Abstract | The design and development of a heat pump drying system in the present research were aimed at developing a machine to reduce the moisture of soybean seeds. The drying chamber was designed to have the dimensions of 1.8 x 2.4 x 2.3 m (width x length x height). The heat pump system utilized a compressor rated at 7 hp (380 V) and R-22 as the refrigerant; its cooling and heating capabilities were 14.3 kW and 17.3 kW, respectively. The heat pump system was tested at the high refrigerant pressures of 1.38, 1.72 and 2.07 MPa. The results showed that the average temperature and relative humidity within the drying chamber were 33ฑ1.02 ฐC, 39ฑ2.9% RH; 38ฑ0.98 ฐC, 36ฑ2.3% RH and 44ฑ1.36 ฐC, 32ฑ3.1% RH, respectively. The refrigerant pressure of 1.72 MPa was noted to be optimal for controlling the temperature and relative humidity for soybean seeds drying. By drying 250 kg soybean seeds from an initial moisture content of 18% w.b. to 11% w.b. the drying time was around 5 h. The cost analysis revealed that the costs of soybean seeds drying at the capacities of 20, 30, 40, and 50 tons/year were 3.65, 2.73, 2.28, and 2.0 Baht kg-1, respectively. |
