jaue2021-054: Study on transportation power of chilled water in DHC area and its buildings

Abstract

In these years, Information Technology is surprisingly developing and it is not exception in buildings. Tamachi
DHC is one of advanced DHC areas. In this area, the plant analyzes BEMS and changes energy supply method.
However, these systems are expensive and difficult to build on existing DHC. The purpose of this study is to clarify
the factors of increase of transportation power on DHC and difference of transportation power on buildings by
receiving system. In addition, analyzing BEMS which buildings on the area have, we will suggest the way of AEM
which plant and buildings work together for energy conservation on whole the area. As a result, transportation power
of chilled water on DHC is influenced by return temperature in summer and supply pressure in winter. Direct
receiving system is more difficult to get temperature gap on low cold heat demand in winter and midnight in summer
than indirect receiving system (heat exchanger system). In addition, direct receiving system needs more
transportation power to carry chilled water. In conclusion, receiving equipment is influenced to transportation power
in DHC and its buildings.