Simulation of domestic hot water preparation in a multi-source complementary system of a university bath in a severe cold region
CHENG Mingyuan
ZHENG Yu
Abstract：Based on the original dual heat source(air source heat pump unit and sewage source heat pump unit)domestic water supply system of a certain university in Shenyang City,a new domestic hot water supply system with three heat sources complementing each other by adding a solar hot water system is proposed,and simulation is carried out for the new and old systems.The results show that the water supply point temperature of the coldest month in the new system is more stable and meets the condition of a rated water supply temperature of 40℃.In winter and spring,due to the shorter duration of sunlight and more cloud cover,the amount of solar radiation received by the collector is relatively low,and it needs to be combined with other heat sources for heating.After the solar water heating system is added,the heat output of the air source heat pump decreased by 32%,which could reduce the electricity consumption of the air source heat pump unit.
Keywords：multi-source complementary systemsolar hot water systemair source heat pumpsimulation
Publication Date：2025-10-25
Online Publishing Date：2025-11-28(First online date of this platform, not the publication date of the document)
Pages：4( 11-14 )