Optimization of Horizontal Buried Pipe Ground-source Heat Pump System for Ultra-low Energy Consumption Buildings
Taking an ultra-low energy con-sumption residential building as an example,TRNSYS software is used to build a simulation model of hori-zontal buried pipe ground-source heat pump system.Combined with the actual user load demand,taking the lowest annual value of the system cost as the ob-jective function,and selecting the water supply tem-perature of the heat pump unit as the optimization var-iable,the Hooke-Jeeves algorithm is used to optimize the ground-source heat pump system.The optimiza-tion results show that the optimal range of water supply temperature for heat pump unit is 30.1 to 40.4 ℃during the heating period.During the cooling period,the optimal range of water supply temperature for heat pump unit is 8.9 to 14.9 ℃.After the optimization,the energy consumption efficiency of the system during the cooling period,the energy consumption efficiencyduring the heating period,and the annual energy con-sumption efficiency are all improved compared with before the optimization.After the optimization,the ground source heat pump system saves 9.7％of elec-tricity compared with before the optimization,and the annual cost is reduced by 2.8％.Under the premise of ensuring reasonable indoor temperature,the average water supply temperature of the heat pump unit during the heating period is reduced by 5.13℃,and the av-erage water supply temperature of the heat pump unit during the cooling period is increased by 3.05 ℃.
国家科技期刊平台
NSTL
万方数据
