|Table of Contents|

Study on the Cooling Capacity With Large Span Double Film Arch of Plastic Greenhouse in Summer(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年10
Page:
45-51
Research Field:
Publishing date:

Info

Title:
Study on the Cooling Capacity With Large Span Double Film Arch of Plastic Greenhouse in Summer
Author(s):
WEI Xin; LI Jianshe; GAO Yanming
(College of Agriculture，Ningxia University，Yinchuan,Ningxia 750021)
Keywords:
plastic greenhouse; different span; cooling capacity; test of environment
PACS:
-
DOI:
10.11937/bfyy.201610012
Abstract:
In order to explore the environmental advantages of a new type large span double film arch of plastic greenhouse with hot dip galvanized steel，the requirements of the cooling effect in summer were analyzed.With 10 m span single film plastic greenhouse as the control，16 m，12 m，10 m，8 m，20 m as test objects，ZWSN-C-A were used to measure the environment performance.The results showed that 8 m，16 m，20 m large span plastic greenhouse had less air temperature 1.15 ℃，0.94 ℃，0.59 ℃，which reduced soil temperature 2.98 ℃，2.32 ℃，3.08 ℃.12 m large span greenhouse compared to other four span of air humidity is minimum，for about 28.08%.Remaining other five greenhouse of humiditythat have no obvious difference，which were about 47%.Light intensity of the control greenhouse was significantly stronger than the double film shed，but the transmittance of 10 m，16 m span plastic greenhouse was more larger than other three ones，which were more 2.36 klx，2.08 klx than 8 m greenhouse.Maintaining a high carbon dioxide concentration was 10 m，12 m，16 m double film greenhouse.Integrated above five environmental factors，16 m span plastic greenhouse had the higher light intensity and carbon dioxide concentration，in addition to in the cooling，moisture had a greater advantage in the summer to compare with the rest of the five greenhouses，which was more promotional.

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Last Update: 2016-07-11