Effects of Building Mix on Energy Performances of the District Heating and Cooling System

In this paper, taking the district heating and cooling (DHC) system as the research object, the load analysis model is developed while taking the building mixing ratio as the parameter, and the supply-side analysis model is formed considering prat-load performance. According to the numerical study on the local areas with different combination modes of office, commercial and residential buildings, there exist optimal mixing ratios from the energy saving viewpoint, with respect to the introduction of the gas engine based DHC system. In addition, the gas engine based DHC system usually enjoys better energy performance than the system based on gas turbine unit.