CO2 BASED DISTRICT ENERGY SYSTEM WITH LOW OPERATING PRESSURE

摘要

The present invention relates to CO_2-based local energy supply equipment having low-pressure operational pressure. The present invention relates to the CO_2-based local energy supply equipment using CO_2 as a thermal energy supply media flowing inside a thermal energy pipeline for local cooling and heating of a customer capable of maintaining liquid CO_2 flowing inside a supply pipe at a low temperature by vacuum-installing the supply pipe to use the liquid CO_2 at a low pressure. In addition, the CO_2-based local energy supply equipment is capable of improving energy efficiency when producing liquid CO_2 of low temperatures using new regeneration energy or residual power of cogeneration in a precooling process performed before producing liquid CO_2 by compressing gaseous CO_2.