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传统的大型焓差实验室空调系统不能有效回收制冷机组的冷凝热,大量的热量被直接排放到空气中;另外,电加热功率很大,造成实验室运行能耗较高。通过对300kW大型焓差实验室冷热源使用情况的分析,提出利用高温热泵回收冷凝热,以减小电加热功率。结合实验测试数据对该方案的节能效果进行了分析,结果表明,大型焓差实验室空调系统冷热源采用冷水机组+高温热泵+辅助电加热系统与传统冷水机组+电加热系统相比,配电容量减少约246.8kW,全年运行费用节省约22.36万元;额定工况下,减少冷却塔流量约41.0m~3/h,全年碳排放量减少约67.9t。
The traditional large-scale enthalpy difference laboratory air-conditioning system can not effectively recover the condensing heat of the refrigeration unit, a large amount of heat is directly discharged into the air; in addition, the electric heating power is very high, resulting in higher energy consumption in laboratory operation. Based on the analysis of 300kW large-scale enthalpy difference laboratory use of cold and heat sources, the use of high-temperature heat pump to recover condensation heat to reduce the electric heating power. Combined with experimental data, the energy saving effect of the scheme is analyzed. The results show that compared with the traditional chiller + electric heating system, the chilled water unit + high temperature heat pump + auxiliary electric heating system of the large-scale enthalpy difference laboratory air- Capacitance reduced by about 246.8kW, the annual operating cost savings of about 223,600 yuan; rated conditions, reducing the cooling tower flow of about 41.0m ~ 3 / h, reducing the annual carbon emissions of about 67.9t.