24 June 2014

OPTIMAL SIMULATION OF DISTRIBUTED GENERATION SYSTEM FOR CO2-REDUCTION IN SUPERMARKET AND RESTAURANT FOCUSING ON THE USAGE OF EXHAUST HEAT


Since the nuclear disaster caused by the Great East Japan Earthquake (2011), Japanese energy system has been expected to prioritize safety and trustworthiness. Now, distributed power systems are considered as one solution, but utilizing exhaust heat is an
important task to be solved.

The purpose of this study is building a simulation model to harness the exhaust of commercial buildings. We obtained two types of data: one is data of 1/15 scale model of supermarket and restaurant standing next to each other with distributed power supply
system, the other is real world data of the two buildings.

Results showed cold cabinets, whose electricity was affected by difference in temperature of outside and inside, consumed most of energy in supermarket. While air conditioning,
affected by difference in air enthalpy of outside and inside, consumed most of energy in restaurant.

According to our simulation with gas engine, PV panel, PCM, thermal storage, FCU and commercial refrigerated cabinets in scale model, we could reduce 27% of CO2 emission and
25% of running cost by selecting equipment.