太阳能相变蓄热地面辐射供暖系统性能仿真

Performance Simulation of Solar Phase-change Heat Storage Ground Radiant Heating System

以北京某建筑为研究对象,建立太阳能相变蓄热地面辐射供暖系统,对系统热负荷、相变蓄热地板、集热器、电辅助加热器进行设计计算。以TRNSYS软件中的典型年1月为模拟时间,在相同运行策略下,对太阳能相变蓄热地面辐射供暖系统、太阳能地面辐射供暖系统(未设置相变材料层)的室内温度进行仿真模拟。最冷月1月两种系统均在大部分时间保证室内温度大于等于18℃。采用太阳能相变蓄热地面辐射供暖系统时,室内平均温度为19.13℃。采用太阳能地面辐射供暖系统时,室内平均温度为18.53℃。太阳能相变蓄热地面辐射供暖系统的热舒适性略高。

Taking a building in Beijing as the research object,a solar phase-change heat storage ground radiant heating system is established,and the heat load of the system,phase-change heat storage floor,heat collector and electric auxiliary heater are designed and calculated.Taking January of a typical year in the TRNSYS software as the simulation time,under the same operating strategy,the indoor temperature of the solar phase-change heat storage ground radiant heating system and the solar ground radiant heating system(without phase-change material layer)is simulated.In the coldest month,January,both systems ensure that the indoor temperature is greater than or equal to 18℃most of the time.When the solar phase-change heat storage ground radiant heating system is adopted,the average indoor temperature is 19.13℃.When the solar ground radiant heating system is adopted,the average indoor temperature is 18.53℃.The thermal comfort of the solar phase change thermal storage ground radiant heating system is slightly higher.