暖通空调
暖通空調
난통공조
HEATING,VENTILATING & AIR CONDITIONING
2014年
10期
33-37,56
,共6页
输配管网%地下敷设%热阻%稳态法%计算%区域供冷供热
輸配管網%地下敷設%熱阻%穩態法%計算%區域供冷供熱
수배관망%지하부설%열조%은태법%계산%구역공랭공열
distribution network%underground buried%thermal resistance%steady-state method%calculation%district heating and cooling
地下敷设是区域供能输配管网的主要敷设方式,其传热计算用于确定保温层厚度、输配管网附加负荷、热损坏可能性。分析了影响地下敷设管网传热的因素,包括:流体与土壤之间的温差、管道的保温隔热性能、埋深、土壤导热系数以及相邻管道之间的间距。介绍了基于热阻的简化稳态计算方法,该方法极大地简化了计算工作量,且计算结果能够满足工程需要,同时该方法适用于大多数地下敷设管网的形式,可供工程设计人员参考。
地下敷設是區域供能輸配管網的主要敷設方式,其傳熱計算用于確定保溫層厚度、輸配管網附加負荷、熱損壞可能性。分析瞭影響地下敷設管網傳熱的因素,包括:流體與土壤之間的溫差、管道的保溫隔熱性能、埋深、土壤導熱繫數以及相鄰管道之間的間距。介紹瞭基于熱阻的簡化穩態計算方法,該方法極大地簡化瞭計算工作量,且計算結果能夠滿足工程需要,同時該方法適用于大多數地下敷設管網的形式,可供工程設計人員參攷。
지하부설시구역공능수배관망적주요부설방식,기전열계산용우학정보온층후도、수배관망부가부하、열손배가능성。분석료영향지하부설관망전열적인소,포괄:류체여토양지간적온차、관도적보온격열성능、매심、토양도열계수이급상린관도지간적간거。개소료기우열조적간화은태계산방법,해방법겁대지간화료계산공작량,차계산결과능구만족공정수요,동시해방법괄용우대다수지하부설관망적형식,가공공정설계인원삼고。
Buried pipe network is the main way of distribution system in district heating and cooling systems,and its heat transfer calculation is used to determine the thickness of the insulation layer,accessory load of distribution system,and the possibility of thermal damage.Analyses the factors that influence the heat transfer calculation of buried pipe network,including temperature difference between fluid and soil, pipe insulation properties,depth,soil thermal conductivity and distance between adjacent pipes.Present the steady-state thermal calculation method based on thermal resistance formulations,which greatly simplifies the computational effort,and the calculated results can meet project needs.This method is suitable for the majority types of buried pipe network,so it can be used as reference for engineering design.