Analysis of the application of water-cooled direct expansion air conditioning system in Guangzhou metro stations
LIU Qianqi
Abstract：To reduce the energy consumption of the ventilation and air conditioning system in Guangzhou metro stations and minimize the scale of civil engineering,a scheme of adopting a water-cooled direct expansion air conditioning system is proposed.A certain operational station of Guangzhou metro is selected as the research object.Energy consumption analysis is conducted based on the measured load data of the station,the long-term design load parameters,the outdoor meteorological forecast data of the typical years in the long term,and the energy efficiency matrix of the chiller.The results show that the water-cooled direct expansion air conditioning system has obvious economic advantages in the medium and long term of Guangzhou metro,but the advantages are not obvious in the short term.However,by configuring the equipment in phases,the economic efficiency in the short term can be effectively improved.
Keywords：metro stationwater-cooled direct expansion air conditioning systeminstallment configuration
Publication Date：2025-09-25
Online Publishing Date：2025-11-10(First online date of this platform, not the publication date of the document)
Pages：4( 44-47 )