超市热电联供系统余热利用及热电冷联供系统研究

UTILIZATION OF CHP WASTE HEAT AND COMBINED COOLING HEATING & POWER SYSTEM IN SUPERMARKETS

通过建立数学模型对热电冷联供系统在超市中应用的可行性进行了分析。利用该模型对系统的节能效果、投资回收期、发动机组容量、等效满负荷运行时间等特性参数进行了研究,并对不同控制方式对系统性能的影响进行了讨论,为超市热电冷联供系统的方案优化提供了依据。

The energy for the heating, cooling and power are very large in the supermarkets, and makes environment worse, so it is valuable to study how to use energy effectively. Significant reductions in energy, pollutants, and carbon emissions will be achieved using a CHP system used in supermarkets, but the exhausted heat utilization is low in summer and the excessive electricity is needed to power the cooling system. If the heat from CHP unit can be used to power the absorption chillers, which can provide cooling for the chilled food cabinets and indirectly for the store itself, the energy efficiency will be highly improved. The potential of the CCHP（combined cooling heating and power） system used in supermarkets was analyzed. A mathematical model for CCHP scheme has been developed based on a validated CHP model. The model is then used to investigate the influences of various parameters on the energy used ＆ cost of supermarkets and the performance of CCHP scheme with different control strategies. The results can be used to optimise a CCHP system.