日照を考慮した温室暖房デグリアワーの算定式
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- 三原 義秋
- 千葉大学園芸学部
書誌事項
- タイトル別名
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- Computation Formulae for Greenhouse Heating Degree-Hour with Consideration for Sunshine
- ニッショウ オ コウリョシタ オンシツ ダンボウ デグリアワー ノ サンテイシ
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説明
Four formulae for estimating the greenhouse heating degree-hour have been presented so far by three authors in this country. Every one is expressed as a function of only the difference between an inside temperature desired and the daily minimum outdoor temperature without any consideration for sunshine; two of them indeed exclude daytime from calculating the degree-hour.<br>In this paper, the daily mean of bright sunshine hours (S) is introduced into equations for daily degree-hour (DH) which are based on four factors; desired inside temperature (TC), daily maximum temperature (TH), daily mean temperature (TM) and minimum temperature (TL). For TC≥TH, <br>DH=24(TC-TM)-S(TC-TH+TM/2)<br>and for TC<TH, <br>DH=24(TH-TM)(TC-TL/TH-TL)2-S/2(TC-TM)2/TH-TM<br>These formulae were derived on the assumptions that bright sunshine renders greenhouse heating unnecessary even when the outside temperature is lower than TC and that the diurnal course of the monthly averaged outdoor temperature can be approximated by two straight lines connecting TH and TL.
収録刊行物
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- 農業気象
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農業気象 34 (2), 83-85, 1978
日本農業気象学会
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詳細情報 詳細情報について
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- CRID
- 1390001204669365120
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- NII論文ID
- 130003665188
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- NII書誌ID
- AA11530034
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- ISSN
- 18810136
- 00218588
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- NDL書誌ID
- 1963701
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可