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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.8, no.2, 1999³â, pp.136-146
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( Evaluation of Heating Performance and Analysis of Heating Loads in Single Span Plastic Greenhouses with an Electrical or Hot-Air Heating ) |
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| A series of experiments were carried out in winter to investigate the indoor thermal environment in greenhouses with different kinds of heating systems, and characterize the energy consumption, heat transport and thermal energy efficiency of each system. By the Quantitative calculation of heat losses which transmit through the covers of greenhouse, the fundamental data of energy-saving of the particular heating system were obtained. And from the analysis of air temperature differences between indoor and outside, it was possible to select more effective energy-saving and comfortable heating system in greenhouses. The electric heater was more stable in thermal environment and cheaper in cost, since it could be used during the surplus time of electric power from 10£º00 p.M. to 8£º00 A.M. But the low air temperature in greenhouses besides these times resulted in a chilling problem of the crops. The heating system by hot air had the advantage to show nearly uniform temperature difference by the height above the ground. But the system had the disadvantage to require more energy consumption than the electric heating system. |
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| ¿¡³ÊÁö ¼Òºñ;³¹æ ¹æ½Ä;ÇϿ콺³» ¿È¯°æ;Energy consumption;Heating system;Indoor thermal environment; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.8, no.2, 1999³â, pp.136-146
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911922406681)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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