|Table of Contents|

Experiment and Simulation of Soil Temperature at Edge Area in Solar Greenhouse(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年05
Page:
41-48
Research Field:
Publishing date:

Info

Title:
Experiment and Simulation of Soil Temperature at Edge Area in Solar Greenhouse
Author(s):
ZHANG HaixinTanaKANG Hongyuan
(Electrical and Mechanical College,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010011)
Keywords:
inner archsolar greenhousemarginal effectCFD simulation
PACS:
-
DOI:
10.11937/bfyy.201705010
Abstract:
The Inner Mongolia standard ‘three vertical and one slope’ type solar greenhouse was used as research object.On the south side of the distance of 0-350 cm,the depth of 0-55 cm range of soil temperature measured,the inner arch shed as well as no internal arch shed to test the temperature characteristic curve of soil layer.The effect of soil temperature on the change of soil temperature was analyzed,and the calculation model of soil temperature on the south side of solar greenhouse with internal arch roof was established.The results showed that,in addition to the south marginal 10 cm measuring point,the increase of 5 cm in greenhouse soil layer average temperature increased 1.7 ℃,the temperature at 25 cm soil layer increased 1 ℃,and there was almost no effect on soil temperature at 55 cm depth;the increase from the south side of 70 cm in the marginal shed,not only effectively delayed the marginal points,and when the outdoor temperature was -18 ℃ to mean,with the marginal points in greenhouse shed than without inner arch shed less than about 60 cm.Gambit (computational fluid dynamics CFD) was used to simulate the temperature of different soil layers in the inner arch shed.The model could accurately simulate the soil temperature of different layers on the south side of sunlight greenhouse and to provide the effective basis for planting crops.

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Last Update: 2017-03-24