抄録
We constructed the model to evaluate the distributed energy supply network system of urban district and evaluated the
practical urban district in Japanese middle city, Utsunomiya. Using this model, it is possible to deduce the energy saved plan
under the condition of energy exchange among buildings and houses of the district.
We carried out the case study in the actual urban district and examined the possibility of energy saving and CO2
reduction. From the GIS data, we can calculate the floor space and building space, using the model to estimate the energy
load of building, and calculated the whole energy load of the urban district. Under these conditions, we evaluate the three
cases, case 1; Installed cogeneration system in each building, case2 ;Installed cogeneration system in each building and
energy interchange with houses, case3; installation of CGS and energy transportation network under the minimization of
electricity sale from the district.
The evaluate results show the installed capacity and operation conditions, considering the surplus electric power of
photovoltaic power and cogeneration. And the case of energy interchange with houses shows the energy consumption and is
reduced over around 2% to case 1.
