Operational Energy Efficiency Analysis of Variable Frequency Chillers for Underground Railway
Metro stations have a dense flow of people and high comfort requirements,and are extremely important public buildings in people's lives.This paper took the air conditioning systems of Xin'angongyuan Station,Zuopaotai Station and Fuyong Station of Shenzhen Metro Line 12 as the research objects,and analyzed the energy efficiency of super-magnetic screw units using series counter current technology,permanent magnet synchronous frequency conversion screw units,permanent magnet synchronous frequency conversion centrifuge units,machine rooms and systems from the aspects of DeST load simulation,unit performance curve and operation measured data.The results show that the energy efficiency of the ultra magnetic screw unit using series counter current technology is high,and the COP of its main engine,EERs,and TCOP are 8.52,7.10,and 4.05 respectively from May to November.