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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1989.12
- 수록면
- 13 - 24 (12page)
이용수
초록· 키워드
오류제보하기
Direct and diffuse components of solar radiation were measured inside and outside a single-span plastic greenhouse. To analyze the direct solar radiation inside the plastic greenhouse, the cross-section of the greenhouse was assumed to be circular. Then the direct solar radiation transmitted into the greenhouse was calculated theoretically, and compared with the experimental measurements. The results are summarized as follows:
(1) The transmissivities of total solar radiation were about 65% on cloudy days and 50% on clear days. For cloudy days, the transmissivity of the total solar radiation was regarded as the transmissivity of sky diffuse radiation.
(2) The ratio of the inside effective scattered component of direct solar radiation to the diffuse radiation was 60-65%.
(3) It appeared that the seasonal variation of the transmissivity of total solar radiation was adversely affected by the transmissivity of direct solar radiation and the effective scattered coefficient. But the effect of the transmissivity of direct solar radiation was dominant factor.
(4) Computer simulation showed that the inside direct solar radiation was decreased as the floor of the plastic greenhouse was higher.
(5) The predicted value of the inside direct solar radiation was 3.3% to 29.0% higher than the measured value.
(1) The transmissivities of total solar radiation were about 65% on cloudy days and 50% on clear days. For cloudy days, the transmissivity of the total solar radiation was regarded as the transmissivity of sky diffuse radiation.
(2) The ratio of the inside effective scattered component of direct solar radiation to the diffuse radiation was 60-65%.
(3) It appeared that the seasonal variation of the transmissivity of total solar radiation was adversely affected by the transmissivity of direct solar radiation and the effective scattered coefficient. But the effect of the transmissivity of direct solar radiation was dominant factor.
(4) Computer simulation showed that the inside direct solar radiation was decreased as the floor of the plastic greenhouse was higher.
(5) The predicted value of the inside direct solar radiation was 3.3% to 29.0% higher than the measured value.
목차
ABSTRACT
Ⅰ. 緖論
Ⅱ. 太陽에너지의 特性과 日射量 分析
Ⅲ. 實驗 裝置 및 方法
Ⅳ. 實驗 結果 및 考察
Ⅴ. 結論
REFERENCES
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