| 摘要: |
| 为减少日光温室土质墙体成本并满足作物生长,对后墙厚度进行优化。以单位造价的节能量为日光温室节能改造的技术经济评价指标,分析日光温室土墙系统在节能工程中的成本构成;通过分析日光温室的状态系数、墙体传热系数和不变成本,着重研究节能量和土墙厚度的关系。研究结果表明:在杨凌地区,当不变成本为43.08元/m2,单位造价节能量取极大值时,增加厚度为1.18 m,实际建造厚度为2.30 m。引入性价比将墙体技术参数和经济参数有效连系起来,以杨凌地区为例,得到了日光温室土墙增加厚度优化式。 |
| 关键词: 日光温室 土墙 节能改造 技术经济优化 |
| DOI：10.11841/j.issn.1007-4333.2012.04.025 |
| 投稿时间：2012-03-05 |
| 基金项目:公益性行业(农业)科研专项(201203002) |
|
| Optimization of earth wall thickness of solar greenhouse: A case study in Yangling Area |
|
MA Jiang-wei, WANG Hong-li, XU Hong-jun, SONG Dan
|
| (College of Horticulture, Northwest Agriculture and Forest University, Yangling 712100, China) |
| Abstract: |
| In order to reduce the cost of solar greenhouse and guarantee the normal crop growth,the thickness of greenhouse wall must be optimized.The paper analyzes the composition of costs for an earth wall system of solar greenhouse in energy saving project,and a technical and economical evaluation index,namely,a ratio of energy saving and unit cost,is proposed for solar greenhouse energy saving renovation.The relationship of the ratio with earth wall thickness was deduced by analyzing the state coefficient,the thermal conductivity of wall and the constant costs.When the constant cost is 43.08 yuan per square meters,the maximization of the energy saving and unit cost is 1.18 m,so the construction thickness is 2.30 m.Technical and economic parameters of the wall are effectively connected.Taking Yangling area as an example,the optimization formula of earth wall of solar greenhouse was obtained. |
| Key words: solar greenhouse earth wall energy saving renovation optimization of technology and economy |
