CAJ | 학술논문

针对高温蒸汽在埋地蒸汽管线中输送会造成热量损失最终导致能源浪费的问题,分析了影响热损失的几个因素,建立了蒸汽管线的物理模型和数学模型,模拟了不同蒸汽温度、不同埋地深度、不同绝热层厚度下的温度场分布,并对不同条件下管线及周边土壤的温度分布规律进行了计算分析。研究结果表明,埋地蒸汽管线的热损失随蒸汽温度、埋地深度、绝热层厚度的变化而变化,其中绝热层厚度对埋地管线的热损失影响最大,绝热层厚度从40 mm 增加到80 mm 时,单位长度管线热损失下降110.591 kW/m,且对热损失的影响逐渐变小。
침대고온증기재매지증기관선중수송회조성열량손실최종도치능원낭비적문제,분석료영향열손실적궤개인소,건립료증기관선적물리모형화수학모형,모의료불동증기온도、불동매지심도、불동절열층후도하적온도장분포,병대불동조건하관선급주변토양적온도분포규률진행료계산분석。연구결과표명,매지증기관선적열손실수증기온도、매지심도、절열층후도적변화이변화,기중절열층후도대매지관선적열손실영향최대,절열층후도종40 mm 증가도80 mm 시,단위장도관선열손실하강110.591 kW/m,차대열손실적영향축점변소。
For high temperature steam vapor transport in the buried pipeline causes heat loss and leads to energy waste problems,several factors affecting heat loss were analyzed.Steam pipeline of physical model and mathematical model was established to simulate the different steam temperatures,different buried depth and temperature distribution under different insulation thickness.And temperature distribution pipeline and the surrounding soil were calculated and analyzed under different conditions.The results show that the heat loss of buried steam lines with the steam temperature,buried depth,changed the thickness of the insulating thickness changes,and the biggest affect of the heat loss was the insulation thickness.When the insulation thickness was from 40 mm to 80 mm,the heat loss per unit length declined 1 10.591 W/m,and the thermal effect was smaller and smaller .