摘要：The sewage flow rate of the urban drainage system is relatively large and generally stable, its sewage temperature range varies relatively lightly and maintains 1 0 in winter. The sewage in the drainage system can be the low grade thermal source for building heating and cooling. Sewage source heat pump technology can efficiently extract or discharge the amount of heat from the sewage in the drainage system for building heating or cooling. The field test of the actual operation thermal performance of the sewage source heat pump were investigated. The results show that: compared with the original system, direct heat exchange type sewage source heat pump system can save 55% of the primary energy consumption, reduce the annual operating cost by 15%. This method not only saves energy, but also can reduce the pollutant emission, and environmental benefits are gained.
