Comparative Study on Performance of Passive and Active Solar Dryer
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Abstract
The solar dryer with 4 drying chambers, in this research, was constructed to test the performance of passive solar dryer (PSD) and active solar dryer (ASD). Air flowrate of ASD varied in this study are 0.03 m3/s (ASD0.03), 0.06 m3/s (ASD0.06) and 0.09 m3/s (ASD0.09). Pork with initial moisture content of 265 % dry basis was selected as testing material. The criteria used to evaluate the solar dryer performance are drying rate, solar dryer efficiency and specific energy consumption. It was found from the experimental results that the ASDs performance are higher than that of PSD. Furthermore, it was revealed that the drying rate of ASD0.06 is higher than that for PSD, ASD0.03 and ASD0.09 by 19.35%, 10.52% and 8.86%, respectively. Whilst, specific energy consumption of ASD0.06 is lower than that for PSD, ASD0.03 and ASD0.09 by 26.56%, 17.13% and 15.65%, respectively. Finally, it was also found that solar dryer efficiency of PSD, ASD0.03, ASD0.06 and ASD0.09 are 11.68%, 12.68%, 14.91% and 12.91%, respectively.
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วารสารวิศวกรรมฟาร์มและเทคโนโลยีควบคุมอัตโนมัติ (FEAT Journal) มีกําหนดออกเป็นราย 6 เดือน คือ มกราคม - มิถุนายน และกรกฎาคม - ธันวาคม ของทุกปี จัดพิมพ์โดยกลุ่มวิจัยวิศวกรรมฟาร์มและเทคโนโลยีควบคุมอัตโนมัติ คณะวิศวกรรมศาสตร์มหาวิทยาลัยขอนแก่น เพื่อเป็นการส่งเสริมและเผยแพร่ความรู้ ผลงานทางวิชาการ งานวิจัยทางด้านวิศวกรรมศาสตร์และเทคโนโลยีพร้อมทั้งยังจัดส่ง เผยแพร่ตามสถาบันการศึกษาต่างๆ ในประเทศด้วย บทความที่ตีพิมพ์ลงในวารสาร FEAT ทุกบทความนั้นจะต้องผ่านความเห็นชอบจากผู้ทรงคุณวุฒิในสาขาที่เกี่ยวข้องและสงวนสิทธิ์ ตาม พ.ร.บ. ลิขสิทธิ์ พ.ศ. 2535
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