城市污水源热泵系统的节能与环保评价法

Evaluation on Energy-saving and Environmental Protection of Urban Sewage Source Heat Pump System

基于工程实践参数,定量比较了城市污水源热泵与其他冷热源的一次能源利用率。在单位污水量条件下,提出了一次能源用能系数与节能系数概念,给出了计算式,做了定量对比计算。基于节能系数概念,评价预测了节能与环保效益。研究表明,污水源热泵系统全年一次能源利用率达1.2,以用能与节能系数概念能有效地评价节能与环保价值,供暖用能系数为1.33,以100m3污水供暖或制冷可分别减少CO2排放量为1.5、0.4kg。

Quantitative comparison was made on the primary energy utilization rate between the urban sewage source heat pump and other sources of heat according to the practical parameters. Under the condition of unit volume of sewage, the concept of energy consumption coefficient and energy-saving coefficient was proposed, and the formula for making quantitative comparison was given. The benefits of energy-saving and environment protection were evaluated and forecasted based on the concept of energy-saving coefficient. The study result shows that the year round primary energy utilization rate of sewage source heat pump is 1.2. Application of the concept of energy consumption coefficient and energy-saving coefficient can effectively evaluate the energy saving and environmental protection potential. The energy con- sumption coefficient for heat supply is 1.33, and heat supply or refrigeration per 100 m3 sewage can reduce CO2 discharge byl. 5 and 0.4 kg respectively.