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Study Of Configuration On High Efficiency Energy Saving Sunlight Greenhouse Investigation And Optimization In Jidong Area

Posted on:2016-05-08Degree:MasterType:Thesis
Country:ChinaCandidate:R J GuoFull Text:PDF
GTID:2283330464966981Subject:Horticulture
Abstract/Summary:PDF Full Text Request
High efficiency energy saving sunlight greenhouse has a pivotal role in eastern area of vegetable cultivation.In this study, I have did the survey of energy efficient solar greenhouse in five representative kinds of Jidong area, and make a Summarize of different configurations Greenhouse configuration parameters and draw the greenhouse section and plan view。I did the Field statistics and analysis of five kinds of greenhouse azimuth 、angle before the roof 、after roof elevation、ridge height、span and temperature changes, finally, I suggested two kinds greenhouse configuration of new、optimized and reasonable for the jidong area agriculture park and farmers ues. The main results are as follows:(1) Wanshida Ⅰ greenhouse structure is more reasonable, better insulation warming, and has a complete environmental monitoring equipment. But the front roof angle 24 ° is too small that will inhibit daytime warming; 54 ° elevation after the roof is too large, it will affect people operation on the rear roof.(2) Jiacheng Ⅱ type is characterized by large-span greenhouse; the back wall was made of compacted walls, embedded Panax brick and reinforced concrete frame, wall after wall surface was made of smooth slope. But its high-span ratio( 0.34) was too small, daytime lighting inside the greenhouse will not reach optimal results.(3) Sanfa Ⅲ type is characterized by large diurnal temperature greenhouse, better warming performance. But its high ratio(0.38) was too small, south west azimuth angle is too small, it will affect the greenhouse temperature at night; in addition, it was affected by environment greatly. so insulation effect should be improved.(4) Jinchang Ⅳ greenhouse is characterized by the use of a new type of foam brick back wall, lower greenhouse cooling rate. But it was too westerly azimuth, horizontal roof after a small greenhouse projected length 0.8m, which has a great influence on its insulation.(5) Wangjie Ⅴ greenhouse feature is the use of several new steel arch-shaped structure, the overall structure of the greenhouse was strong stability; reasonable conservatory roof before the arc, good lighting effects during the day. But their greenhouse south west azimuth angle is small, relatively high across large 0.53, the back wall heat storage capacity is weak, low temperatures at night.(6) Optimal design of the park is suitable for things to either type of production and economic production two energy efficient Greenhouse configuration.
Keywords/Search Tags:Energy efficient solar greenhouse, Greenhouse Performance, Configuration parameters, Configuration optimization
PDF Full Text Request
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