江河湖海地表水源热泵系统节能与环境评价

利用江、河、湖、海地表水作为热泵冷热源为建筑物供暖空调具有重要的节能与环保意义,为此,分析了以大气为冷源的空调系统产生城市热岛效应后的能耗附加值及其定量化公式,提出并定义节能与用能系数的概念,推导制热、制冷条件下的计算公式,基于节能与用能系数的概念定量给出单位水量、单位温降或温升的节能与环保效益.研究表明,所建立的评价方法与公式能定量评价节能与环保价值.以大气为冷源的空调系统能耗附加值达20%以上,地表水源热泵系统节能系数在0.37~1,节能量达1.55~4.18 M J/(m3.℃),二氧化碳少排放量达(1.4~4.82)×10-3kg/(m3.℃).

Energy-saving and environmental evaluation of surface-water source heat-pump system

To quantitatively evaluate surface-water source heat-pump system,the heat island effect because of the air-source air-conditioning units and the quantitative formulas for added energy value were analyzed.Energy-saving and energy-using coefficients were defined and their calculation formulas under refrigeration or heating were deduced.And energy-saving and environmental benefit of per unit flux or temperature was calculated.The research indicates that the relative added energy value of air-source air-conditioning system is 20%,the energy-saving coefficient of surface-water heat-pump system is between 0.37 and 1,the quantity of energy-saving is 1.55-4.18 MJ/(m3·℃),and CO2 exhaust reduces about(1.4-4.82)×10-3kg/(m3·℃).