制冷与空调(四川)
製冷與空調(四川)
제랭여공조(사천)
REFRIGERATION & AIR-CONDITION
2012年
6期
536-540
,共5页
姚奇志%刘秋新%石文%程浩?
姚奇誌%劉鞦新%石文%程浩?
요기지%류추신%석문%정호?
单U地埋管%换热性能%数值模拟
單U地埋管%換熱性能%數值模擬
단U지매관%환열성능%수치모의
single U buried pipe%heat transfer performance%numerical simulation
地源热泵系统研究的重点和难点在于地埋管换热,归纳了影响地埋管换热诸多因素,认为受管内流体与土壤温差、管内流态、供回水管间距、回填材料导热系数、运行时间长短等因素影响,通过对单U地埋管换热性能的数值模拟,对比分析了保温地埋管、非保温地埋管、不同保温管长度及不同运行工况下换热情况,比较分析的结果表明,保温地埋管换热能力要高于非保温管,保温管长度要适宜,不同运行工况对地埋管进出口温差和换热量影响不同.
地源熱泵繫統研究的重點和難點在于地埋管換熱,歸納瞭影響地埋管換熱諸多因素,認為受管內流體與土壤溫差、管內流態、供迴水管間距、迴填材料導熱繫數、運行時間長短等因素影響,通過對單U地埋管換熱性能的數值模擬,對比分析瞭保溫地埋管、非保溫地埋管、不同保溫管長度及不同運行工況下換熱情況,比較分析的結果錶明,保溫地埋管換熱能力要高于非保溫管,保溫管長度要適宜,不同運行工況對地埋管進齣口溫差和換熱量影響不同.
지원열빙계통연구적중점화난점재우지매관환열,귀납료영향지매관환열제다인소,인위수관내류체여토양온차、관내류태、공회수관간거、회전재료도열계수、운행시간장단등인소영향,통과대단U지매관환열성능적수치모의,대비분석료보온지매관、비보온지매관、불동보온관장도급불동운행공황하환열정황,비교분석적결과표명,보온지매관환열능력요고우비보온관,보온관장도요괄의,불동운행공황대지매관진출구온차화환열량영향불동.
Through to the single U buried pipe heat transfer performance of numerical simulation, Summarizes the influence of many factors to buried pipe heat transfer, comparative analysis of the heat preservation of buried pipe, Not heat preservation of buried pipe, heat transfer under different insulation length and different flow , the results of comparative analysis show that the heat transfer capacity of heat preservation of buried pipe is better than not, insulating pipe length should be appropriate.