摘要
采取有限差分法和焓降法混合编程求解方管保温三维温度场,研究了方管保温复合传热机理,建立了优化设计模型,分析了最佳内、外层经济保温层厚度。研究表明:数值模拟与实测结果两者吻合良好;通过对双层保温的总费用分析,保温材料价格及性能、管内介质流速和热价是最佳内外经济保温层厚度的三大主要影响因素;在满足各约束条件下,内外保温层材料搭配应考虑适度控制高价位的保温层厚度,增厚低价位的保温层厚度,达到既可节能又减少投资和运行成本。此成果有助设计人员合理地选择保温材料并确定其最佳经济厚度,提高设计效率和设计质量,并已应用于某炉窑公司保温工程,得到了充分验证和取得良好的经济效益。
Based on the finite difference and the enthalpy drop method, a complete three-dimensional temperature field of square-pipe in- sulation is built by hybrid programming, discuss the principle of compound heat transfer in square-pipeline insulation, establish the numeric module of optimization, analyze the optimally internal and external thickness of square-pipe insulation. Studies show the software calcul- ation agree well with the test; by analyzing the total heat insulating expense of double insulating layer, three key parameters are the price and performance of insulation material, the flow rate of medium inside the pipe, the heat price in the optimally internal and external thickness of insulation; under the control of the constrained conditions, collocation of internal and external insulation material should control the insulation thickness of high price, thicken the insulation thickness of low price, so that saving energy and reducing investment and operation cost. The research are helpful to the designers to select insulating materials and determine their economical thickness, which can increase their design efficiency and quality; has been applied to temperature holding engineering of some furnace ＆ kiln Co. Ltd., has been sufficiently validated and achieved economic benefit.
出处
《工业加热》
CAS
2013年第4期11-14,共4页
Industrial Heating
关键词
管道保温
方管
优化设计
经济保温层
混合编程
pipeline insulation
square-pipeline
optimization design
economical insulation thickness
hybrid programming
