新疆戈壁地日光温室墙体结构性能研究

发布时间：2018-06-03 16:20

  本文选题：日光温室 + 戈壁地　； 参考：《新疆农业大学》2015年硕士论文

【摘要】：本文以解决新疆戈壁地就地取材墙体结构优化为目标,以新疆戈壁地日光温室墙体为主要研究对象,基于日光温室低限热阻的取值和日光温室墙体蓄热能力模拟预测软件开展戈壁地日光温室墙体结构设计与计算,形成适合新疆戈壁地区的日光温室优化墙体组合方案;组建材料与环境控制的最优模式;推动日光温室设计、建造理论与方法的发展,增强设施农业可持续发展能力。本文的主要研究内容包括以下部分:(1)针对戈壁地区独特的生态与自然环境特点,进行适合戈壁地日光温室墙体建材比对,从墙体承载支撑力和保温蓄热两方面搜集和整理新疆常用的温室蓄热材料和隔热保温建筑材料的干容重和导热系数,为新疆戈壁地温室墙体组合计算提供可靠的数值。(2)针对新疆实用型五大类多层墙体不同厚度和材料的组合方式,引入和参考温室标准:JB/T 10286-2001《日光温室结构》中墙体材料的热阻值的设计理念,对实用性强的五大类共计403种多层墙体,进行不同厚度和不同材料的组合,计算出符合新疆温室室外设计温度温度条件下的多层组合墙体结构。(3)基于中国农业大学设施农业工程农业部重点开放实验室开发设计RGWSQCR日光温室墙体蓄热保温性能模拟软件,提出适合新疆克孜勒苏柯尔克孜自治州生产型温室的7种不同墙体组合结构温室,模拟出单位面积的平均放热量以及累计放热总量;模拟室内环境的日夜变化,模拟温室夜间墙体放热随时间变化的规律,对比出7类代表性结构墙体保温性能差异。(4)对已建成使用的4类不同墙体结构的戈壁温室,通过测试时间内最低温、最高温、平均值和连续日变化规律比较不同墙体对温室小气候环境的影响差异,得出温室热性能最佳温室墙体结构方案。本文通过对戈壁地日光温室墙体结构组合计算、模拟试验和实测数据分析得出:符合新疆温室室外设计温度-5℃~-32℃温度条件下,满足大于低限热阻的多层组合墙体组合方式共计320种;提出7种适合新疆克州生产型温室的不同墙体组合结构,通过软件模拟出性能较好的温室依次为,0.2 m毛石混凝土护坡+1.8 m戈壁土堆砌2 m戈壁土实墙1.5 m厚戈壁土墙体+10 cm草泥;并通过对4类墙体的已建设使用的温室进行实时监测得出适合克州最佳的温室热性能墙体结构为戈壁土+毛石混凝土护坡结构。
[Abstract]:The aim of this paper is to optimize the wall structure of the Gobi in Xinjiang, and the main research object is the wall in the solar greenhouse of the Gobi in Xinjiang. Based on the low limit thermal resistance of solar greenhouse and the simulation and prediction software of wall heat storage capacity of solar greenhouse, the wall structure design and calculation of Gobi greenhouse is carried out to form the optimum wall combination scheme of solar greenhouse in Gobi area of Xinjiang. The optimal model of material and environment control should be set up to promote the design of solar greenhouse, the development of theory and method of construction, and the enhancement of the ability of sustainable development of facility agriculture. The main research contents of this paper are as follows: (1) in view of the unique ecological and natural environment characteristics of Gobi area, we compare the wall materials suitable for the Gobi solar greenhouse. Collect and sort out the dry bulk density and thermal conductivity of the common greenhouse heat storage materials and thermal insulation building materials in Xinjiang from the aspects of wall bearing support and thermal insulation and heat storage. To provide reliable numerical value for wall combination calculation of Gobi greenhouse in Xinjiang, aiming at the combination mode of different thickness and material of five kinds of practical multi-layer wall in Xinjiang. Introducing and referring to the design idea of the thermal resistance of wall materials in the greenhouse Standard: JB / T 10286-2001 "Solar greenhouse structure", a total of 403 kinds of multi-layer walls of five categories with strong practicability are combined with different thickness and different materials. Based on the key open laboratory of the Ministry of Agriculture of China Agricultural University, the heat storage and heat preservation performance simulation software of RGWSQCR solar greenhouse wall is developed and designed. Seven kinds of greenhouse with different wall combination structure suitable for production greenhouse in Kezilesu Kirgiz Autonomous Prefecture, Xinjiang, are put forward to simulate the average heat release per unit area and the total amount of accumulated heat release, and to simulate the change of indoor environment day and night. By simulating the variation of wall heat release with time in greenhouse at night, the paper compares the heat preservation performance difference of 7 kinds of representative structure wall with that of Gobi greenhouse with four kinds of wall structures that have been built and used, through testing the lowest and highest temperature in time. The average value and continuous diurnal variation are compared between the different wall and the influence of different walls on the greenhouse microclimate environment, and the best greenhouse wall structure scheme of greenhouse thermal performance is obtained. In this paper, through the combination calculation of wall structure in Gobi greenhouse, simulation test and analysis of measured data, it is concluded that the outdoor design temperature of greenhouse in Xinjiang is -5 鈩，

本文编号：1973417