The Research of Heat Loss Calculation Model of Directly-Buried Heating Pipe
Applied Mechanics and Materials(2014)
摘要
In this paper, we shall discuss the calculate method of heat loss of central heating pipes. the calculation formulas available are too complicated and inconvenienced to analysis the dynamic thermal conditions of heating pipeline. Therefore, this paper presents one order polynomial with least-squares solution, and then establishes linear equations of heating pipeline heat loss that the hot water temperature as a variable alone. It is based on the comparision and analysis of buried hot water heating pipeline heat loss formula. This method will simplify not only the calculation, but also the model of calculation analysis for different diameter, different insulation materials. The result is that the deviation of the formula is caused mainly by the thermal resistance. The relative errors of simplified formula and the selection formulas are less than 3%, which can meet the requirements for engineering applications.
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关键词
Heat loss,Least squares method,Curved simulating,Method of calculation
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