河水源热泵与蓄热电锅炉联合供暖系统研究

Investigation of a Combined Heating System with Water Source Heat Pump and Thermal Storage Electric Boiler

为提高电力供暖的经济性,本文设计了一种河水源热泵和蓄热电锅炉联合供暖系统。并根据某10万m2小镇的供暖需求进行了方案设计。通过采用不同输出功率分配的热泵和蓄热电锅炉组合方案,对各方案的运行费用、初投资费用和污染物排放进行了对比研究。研究结果表明,随着热泵供暖负荷的增加,设备的初投资随之增加,而运行费用和污染物排放随之减少。根据三个指标综合判断,方案2的8台热泵和1.4 MW的蓄热电锅炉为最优方案,运行费用为39.6元/m^(2)接近燃煤采暖的费用,且污染物排放相比于燃煤供暖每年可减少30 t。

In order to improve the economy of electric heating,a combined electric heating system of river water source heat pump and thermal storage electric boiler was designed in this paper.The combined heating system was designed according to a small town with a 100000 square meters heating demand.Through the use of different output power distribution plans of heat pumps and thermal storage electric boilers,the operating costs,initial investment costs and pollutant emissions of each plans were compared and studied.The results show that as the heat pump heating load increases,the initial investment in equipment increases,while operating costs and pollutant emissions decrease.According to the comprehensive judgment of the three indicators,the 8 heat pumps and 1.4 MW thermal storage electric boiler of plan 2 is the optimal solution,and the operating cost is 39.6 yuan/square meter,which is close to the cost of coal-fired heating,and pollutant emissions compared to coal-fired heating can be reduced by 30 t per year.