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A Solar Dryer & Moisture Condensing Cabinet with Thermosyphon Heat Flow |
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| รหัสดีโอไอ | |
| Creator | 1. Jaruwat Jareanjit 2. Yafad Dusamoh 3. Supat Detsopha 4. Suriya Chuyin |
| Title | A Solar Dryer & Moisture Condensing Cabinet with Thermosyphon Heat Flow |
| Publisher | Faculty of Engineering, Khon Kaen Univeristy |
| Publication Year | 2554 |
| Journal Title | KKU Engineering Journal |
| Journal Vol. | 38 |
| Journal No. | 1 |
| Page no. | 35-42 |
| Keyword | Solar Drying Cabinet, Solar energy, Moisture reduction |
| ISSN | 0125-8273 |
| Abstract | In this work, a Solar Dryer & Moisture Condensing Cabinet with Thermosyphon Heat Flow was designed, constructed and performance tested for drying the agricultural production. The cabinet dryer is constructed as a passive type close system covered with a glass with a horizontal angle of 12o and a transparent acrylic sheet to receive maximum solar energy. A dimension of the dryer cabinet was 83 cm x 77 cm x 100 cm containing 5 trays each placed in a horizontal shelf. Shelf 5 was in the top position. Thegutters were placed to receive the condensed moisture from the front and the top pieces of glass and vented outside the cabinet. The parameters used to compare the performance of the dryer cabinet were drying duration and drying rates. The data were collected 6 hours a dayfrom 9 am to 3 pm. The result from the research indicates that the Solar Dryer & Moisture Condensing Cabinet with Thermosyphon Heat Flow yielded the products ina shorter drying duration with a higher drying rate compared to a natural drying method of the sunlight. The result also reveals that the drying cabinet was used to reduce average 300% (d.b.) moisture of 5 kg ofpeppers in all 5 trays to average 26% (d.b.) in 3 days (18 hrs.) in spites of the fact that all 5 trays were still placed in the same shelf compared to that of 52% dried by the sunlight in the same duration. When the moisture of the peppers in each tray was analyzed, the result shows that the peppers on the fifth shelf, the topmost one, were the driest products with the shortest duration following by the peppers on Shelf 4, Shelf 3, Shelf 2 and Shelf 1 respectively. Thus, the Solar Dryer & Moisture Condensing Cabinet with Thermosyphon Heat Flow can be used to dry 8-10 kg of peppers in 3 days (18 hrs.) depending on solar radiation. Thus, on the first day the tray of peppers on Shelf 5 could be removed and the trays on the lower shelves were moved up. As such Shelf 1 was replaced with a new tray ofpeppers. The quality of the products were also in an acceptable criterion. The dried peppers in 5 trays were of a similar colour. They were neither damagedby rain nor eaten by rodents and insects. |
