空气源热泵生物质锅炉联合供热系统应用性能模拟

PERFORMANCE SIMULATION OF AIR-SOURCE HEAT PUMP BIOMASS BOILER COMBINED HEATING SYSTEM

为研究我国北方农村地区利用可再生能源生物质能与空气源热泵相结合的供热系统的实际应用性能,以沈阳市农村某小区建筑为案例,采用TRNSYS动态系统搭建空气源热泵与生物质锅炉联合供热系统仿真模型进行模拟研究。该系统通过时间模块调控采取两种控制策略,与单一的空气源热泵供热系统进行对比,并对这3种模式的系统运行特性进行分析比较。联合供热系统模式1整个采暖季平均耗电量较单一空气源热泵供热系统降低56%;平均制热性能系数提高0.19;可再生能源利用率和一次能源利用率分别增幅25.21%和63%,当供水温度45℃、生物质锅炉供热占比60%时总投资费用相对较低,空气源热泵与生物质锅炉联合供热系统运行更高效节能。

In order to study the practical application performance of the heating system combining renewable energy biomass energy and ASHP in rural areas of northern China,a rural residential building in Shenyang is taken as an example,and the simulation model of ASHP and biomass boiler combined heating system is built by TRNSYS dynamic system.The system adopts two control strategies through time module control,and compares with a single air source heat pump heating system,and analyzes and compares the system operation characteristics of these three modes.The average electricity consumption of the combined heating system mode is 56%lower than that of the single ASHP heating system in the whole heating season.The average heating performance coefficient increased by 0.19,the utilization rate of renewable energy and primary energy increased by 25.21%and 74%respectively,and the total investment cost was relatively low when the water supply temperature was 45°C and the proportion of biomass boiler heating was 60%,and the operation of the combined heating system of ASHP and biomass boiler was more efficient and energy-saving.