Study on the Exterior Wall External Thermal Insulating Mortar Made from Waste Expanded Polystyrene(EPS)

The surface of modified EPS can be changed from the character of water-repellent to hydrophilic,and be wetted by freshly mixed portland cement paste.A new thermal insulating mortar with good properties of workability,thermal insulation,climate-resisting and crack-resisting can be made modified EPS as light aggregate and cement as binder,and modified with fiber and polymer.This new type of insulating mortar can be used as exterior wall thermal insulation,which breaks the limitation of traditional insulating mortar only as interior insulation.It has been widely used in civil engineering.     

Thermal insulation properties of wood-based sandwich panel for use as structural insulated walls and floors

Thermal insulation and warmth-keeping properties of thick plywood-faced sandwich panels with low-density fiberboard (plywood-faced sandwich, PSW), which were developed as wood-based structural insulation materials for walls and floors, are comprehensively clarified. The properties focused on were thermal conductivity (λ), thermal resistance (R), and thermal diffusivity (D). The results for PSW panels were compared with those for commercial wood-based boards, solid wood, and commercial insulators. The λ values were measured for PSW panels and their core and face elements. As a result, the composite theory of λ was found to be appropriate for PSW composites, because the calculated/experimental λ ratios were approximately 90%. The λ values for PSW panels with densities of 340 kg/m³ (PSW350) and 410kg/m³ (PSW400) were 0.070 and 0.077W/mK, respectively. The R values for PSW350 and PSW400 were 1.4 and 1.2m²K/W, and the D values were 0.00050 and 0.00046m²/h, respectively. Consequently, the PSW provided thermal insulation properties superior to those of the boards and in terms of warmth-keeping properties were greatly advantageous over the insulators. These advantages were due to the moderate densities of PSW panels. The PSW panel with sufficient thickness showed remarkably improved thermal resistance compared with those of the boards.     

木材干燥设备的控制工程基础

应用控制论思想，以木材干燥设备为系统、以供给系统的条件为输入、系统的环境指标为输出，可以确定具有可比性的干燥设备的性能指标。从工程控制理论角度，分析了木材干燥设备的保温性、密封性和排湿能力。     

节能温室环保材料使用性能评价体系研究

本文采用模糊分析法对我国节能温室中大量使用的保温薄膜进行了使用性能的评估,通过建立一套以保温性、经济性、力学性、环保性等主要评价指标的综合评价体系,从而为我国从事设施农业生产的众多农户在购买保温薄膜时提供一套行之有效的选择方案。      

粮仓新型保温隔热吊顶材料效果研究

采用新型保温隔热材料对仓房进行吊顶,试验结果表明:应用新型吊顶材料对仓房吊顶后,能够起到很好的隔热作用,在储粮度夏期间能有效降低仓温和表层粮温上升幅度;与对照仓相比仓温平均低5℃,表层粮温平均低3℃,有效降低了仓内温度,达到了准低温储粮效果,能有效抑制储粮害虫的孳生,保持储粮品质,实现了绿色储粮;取得了更高的经济效益。     

Study on Heat Insulation and Use of Passive Evaporated Roof

According to different construction ways and materials, three kinds of roof, that is ,passive evaporated roof with freedom water surface , water stored roof by means of pore material and hygroscopic roof,are introduced in this paper . Meanwhile the theory of heat insulation and energy efficiency on passive evaporation roofs and suitable weather and places to be used are also discussed .The results show that all kinds of passive evaporated roofs have high efficiency in heat insulation because of water's high specific heat and large quantity of absorbed latent heat,and that they can be adopted according to the practical local weather ,natural resource and economical development.     

房式仓机械通风低温储粮试验

在房式仓通过吊顶隔热进行机械通风低温储粮试验，取得了较好的效果，延缓了储粮品质陈化。     

室内养殖雌性松鼠秋季换毛期被毛长度和保温性能变化

为了解松鼠东北亚种(Sciurus vulgaris manchuricus)秋季换毛期的被毛性状与保温性能变化的关系,选取2011年9月25日至12月15日期间采集的在哈尔滨室内人工养殖的27张雌性松鼠东北亚种生皮为材料,对背臀部毛皮样本进行传热性能测试,同时对该部位的披针毛、绒毛的长度和毛根出现无髓样本比例进行测量计算。结果表明:1)随着秋季换毛期的时间后移,新生冬毛长度不断增加,毛皮传热系数不断减小。当被毛生长结束时,保温性能达到恒定。2)披针毛长度、绒毛长度、披针毛毛根无髓段比例、绒毛毛根无髓段比例这4个被毛性状因子两两呈极显著正相关(P<0.01),且此4个性状因子皆与毛皮传热系数呈极显著负相关(P<0.01)。以上反映了在气温渐冷的秋季换毛期每时间阶段被毛的长度、生长程度、保温性能的具体变化及相互关系。     

寒冷地区输气管道站场保温设置模拟

中国寒冷地区输气管道站场日益增多,但对站场保温设置的重要性认识不足。为了保障站场运行安全,节约运行成本,开展了站场保温设置原则及必要性研究。通过模拟保温对停输管道温降的影响,分析了保温设置对维持管壁温度的效果;通过模拟保温对站内热损失的影响,分析了保温设置对节约运行成本的效果。研究结果表明:设置保温对维持停输后管壁温度、降低站内温降损失效果显著。提出以下原则:根据达到设计输量年限确定站场是否设置保温;加热设备选型需要充分考虑站内温降等工艺参数。该研究成果已在中国东北地区哈沈线、中俄东线等工程中应用,并可进一步指导后续同类工程的建设。