Taking the regional distributed energy system as the research object

this paper develops a load assessment model considering the influence of plot ratio

a pipeline model considering the pump power and heat losses

as well as a supply-side energy assessment model. According to the simulation results of various districts

for a specific area

there exists an optimal pipe diameter which can minimize the energy consumption of the pipeline system. Moreover

the change of pipeline flow may also affect the selection of the optimal pipe diameter and corresponding pipeline energy consumption. On the other hand

from the viewpoint of urban spatial structure

an increase in the plot ratio may enhance the energy performance of the distributed energy system. For a specific user

there exists a minimum plot ratio

which can guarantee the energy benefits of the distributed energy system. Furthermore

the density of pipeline may also influence the energy performance of the distributed energy system.