Experimental study of seawater source heat pump system for cooling in submarine tunnel seepage
Aiming at the problem of energy waste caused by the direct discharge of a large a-mount of seawater seepage without being utilized in the drainage-type undersea tunnel con-structed by the mining method,it is proposed that seawater seepage from the tunnel be used as the cooling and heating source of the water-source heat pump system,which can supply heat and cold to buildings near the tunnel.A demonstration project of seepage seawater heat pump system in submarine tunnel was built in Qingdao,and the operation effect of the heat pump system in the actual project was analyzed through the monitoring of the operation con-dition in the cooling season.The experimental results showed that during the operation of the heat pump,the average temperature of the test room was 24.5 ℃,and the indoor tem-perature can reach the design requirements.The average daily power consumption of the heat pump system was 1466.3 kW·h,of which the energy consumption of the transmission and distribution system accounted for 31％of the energy consumption of the whole system,and the average energy efficiency ratio(EER)of the heat pump unit in the cooling season was 5.3,which made the system more effective in energy supply.This study provides data support for the engineering application of seepage seawater source heat pump system.
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万方数据
