关键词：太阳能；市政供热；制热运行
摘 要：The research,based on combination system of solar energy and municipal heating network,studied the running scheme of combination system of solar energy and municipal heating network through ways of experiments and theoretical calculation of the mathematical model.Firstly,the research established mathematical model of heat equilibrium of the combination system of solar energy and municipal heating network; secondly,keeping the indoor heat load steady,compared the dynamic heat load provided by solar collector with that needed by heated room at the same time,determined time spans of the network stopping service and the heat load added by the network within 24 h.In the research we took a heating period in a typical room in Shenyang for example,under the conditions of low temperature floor radiant with heating index standard of 50W/m2 and 50 ℃ of the average supplied water temperature,40 ℃ of the return water temperature,calculated and verified the established mathematical model.The results include:when the heat load provided by solar collector is greater or less than the heat needed by the room,how many heat amount should be supplied by the running network and the amount of water flow within the network pipes correspondingly,and how long the network runs or stops.The final conclusions include:whether the running scheme of the combination system can save energy? the conditions of energy saving in running a combination system,and whether the system can bring environmental benefits.