基于降雨工况的开式湖水源热泵系统效率分析  

Analysis on Efficiency of Open-loop Lake Water Source Heat Pump System Based on Rainfall Condition

作　　者：王勇[1] 韩传璞[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2011年第21期100-104,共5页China Water & Wastewater

基　　金：国家科技部"十一五"科技攻关项目(2006BAJ01A06)

摘　　要：基于重庆地区的气候条件,分别分析了降雨对水体水温分布及水体热承载能力的影响,同时还分析了降雨对开式湖水源热泵系统运行能耗的影响。结果表明,强降雨主要以输入冷量的方式使水体水温整体降低,并实测得到降雨前、后机组的平均运行能效比分别为3.29和4.35,即降雨后的系统效率相对于晴天提高了32.3%;小雨及阵雨主要以扰动的形式使水体上、下部的温度中和,对机组能耗影响不明显,但加快了取水层(水体底层)的温升速度。因此,在对湖水源热泵系统进行效率分析时,要充分考虑当地的气候条件。Based on the climatic conditions in Chongqing region, the influences of rainfall on water temperature distribution, heat carrying capacity of water body and energy consumption of openloop lake water source heat pump system were analyzed respectively. The results show that heavy rain makes water temperature decrease wholly by inputting cold energy. The average energy efficiency ratio of the unit before and after the rainfall are 3.29 and 4.35 in actual measurements, and the system efficiency is increased by 32.3% than before the rainfall. Light rain and shower make the upper and lower temperatures of water body uniform by perturbation, which has little influence on the energy consumption of the unit, but the temperature rise of water supply layer （bottom layer of water） is quickened. Therefore, when making analysis of efficiency of open-loop lake water source heat pump system, local climatic conditions should be considered fully.

关 键 词：湖水源热泵 降雨 水温 能效比 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]