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KMID : 0380619820140020156
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Korean Journal of Food Science and Technology
1982 Volume.14 No. 2 p.156 ~ p.161
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Comparison of the Solar Collection Efficiencies of Various Vinyl House
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신동화/Shin, Dong Hwa
서기봉/이동선/박노현/신휴년/Suh, Kee Bong/Lee, Dong Sun/Park, Know Hyun/Shin, Hyu Nyun
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Abstract
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Three plastic film solar dryers covered with different film layer were constructed by modifying farm vinyl house and studied their performance.
The collection efficiency and temperature raising of type C which was covered with double layers of transparent PE and black PVC film was most efficient, followed after B covered with double layer of transparent PE film and type A covered with single layer transparent PE film. The inside temperature of type C was average 18℃ higher than ambient temperature and its collection efficiency showed 31.5% with air flow rate of 3.8 ㎥/min. The solar energy collection efficiency of type C was increased in proportion to air flow rate up to 60.2% at 11.3 ㎥/min. In demonstration drying test of red pepper in type C, drying capacity per unit area was 2.5 times higher than that of conventional solar drying on straw mat and drying time shortened to about half.
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