|Table of Contents|

Simulation Effect of Inclination Angle of Roof on the Light Environment of Sunlight Greenhouse

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年16
Page:
78-82
Research Field:
Publishing date:

Info

Title:
Simulation Effect of Inclination Angle of Roof on the Light Environment of Sunlight Greenhouse
Author(s):
YANG Wenxiong1; MA Chengwei2
(1.College of Mechanical and Electrical Engineering，Beijing Agricultural Vocational College，Beijing 102442;2.College of Water Conservancy and Civil Engineering，China Agricultural University，Beijing 100083)
Keywords:
inclination angle of roof; sunlight greenhouse; light environment; simulation
PACS:
-
DOI:
10.11937/bfyy.20183271
Abstract:
With the help of the sunlight greenhouse light environment simulation software initiated by China Agricultural University，the effects of different roof inclination angles on the indoor light environment of sunlight greenhouse were simulated and studied.The results showed that the absolute value of the average transmittance of the front roof increases by 0.5% when the span of the greenhouse was 8 m and the inclination angle of the roof increases from 26° to 32°，the average irradiance of the ground，wall and back roof of the greenhouse increases by 0.3%，10.9% and 946% respectively in a specified period of time，and the cumulative radiation energy of the greenhouse floor，wall and back roof per unit length of the greenhouse increases by 0.3%，10.9% and 946% respectively.The cumulative total energy of light radiation per unit length of greenhouse increased by 7.06 MJ，the increase rate was 15.1%，and the proportion of direct astigmatism also increased to a certain extent.Considering comprehensively，when the span of greenhouse was unchanged，the inclination angle of roof can be increased by 2°-4°,to 32°，which was conducive to the accumulation of sunlight and the growth of crops in greenhouse.

References:

[1]陈健,刘志杰.高寒地区大型日光温室的采光设计[J].东北林业大学学报,2002,30(3):69-72.[2]孙周平.彩钢板保温装配式节能日光温室的温光性能[J].农业工程学报,2013,29(19):159-167.[3]李家宁,马承伟,赵淑梅,等.几种常用屋面形状和倾角的日光温室光照环境比较[J].新疆农业科学,2014,51(6):1008-1014.[4]李霞,于贤昌,艾希珍,等.日光温室采光与下挖深度优化设计[J].山东农业科学,2011(9):35-40.[5]宋明军,郭晓冬.甘肃省节能日光温室采光设计的分析与探讨[J].北方园艺,2005(5):14-15.[6]王朝栋,史为民,裴先文,等.4种曲线形日光温室前屋面采光性能及其拱架力学性能的比较[J].西北农林科技大学学报,2010,38(8):143-150.[7]王梅,高志奎,王俊玲,等.半地下立窗型日光温室采光效率模型及温光性能优化[J].长江蔬菜,2013(8):21-26.[8]徐增汉,宋泽民,王定福,等.不同透光材料不同倾角的透光率测定[J].西南农业学报,2012,25(3):1090-1096.[9]王静,崔庆法,林茂兹,等.不同结构日光温室光环境及补光研究[J].农业工程学报,2002,18(4):86-89.[10]轩维艳.日光温室采光屋面曲线数学模型的建立与分析[J].天津农业科学,2006,12(4):44-46.[11]佟国红,李保明.日光温室内各表面太阳辐射照度的模拟计算[J].中国农业大学学报,2006,11(1):61-65.[12]高志奎,魏兰阁,王梅,等.日光温室采光性能的实用型优化研究[J].河北农业大学学报,2006,29(1):1-5.[13]张锁峰,白文斌,潘天任,等.我国北方日光温室前屋面采光曲线最优化设计[J].山西农业大学学报,2013,33(4):336-341.[14]马承伟,赵淑梅,程杰宇,等.日光温室光辐射环境模型构建[J].沈阳农业大学学报,2013,44(5):513-517.

Memo

Memo:
-
Last Update: 2019-08-29