Analysis on Energy Efficiency and Pollutant Reductions of Direct Sewage Source Heat Pump System

When using the urban sewage as cooling and heating sources of the heat pump system in the buildings, the indirect system is potential in the future. The key technologies in the direct system are discussed. With the traditional heating and cooling system as the comparisons, the direct system is analyzed on energy efficiency and pollutant reductions. And the primary energy ratio of the direct system is bigger about 0.2, annual energy conservation is approximately bigger 7% and pollutants reductions are higher about 8% than the indirect one.