A Study Of Energy Consumption Simulation For Energy Saving Building

With the rapid development of the national economy and city construction, the energy demand increases very quickly. Building energy consumption amounts to about one fourth of our nation's primary energy consumption. Generally,about 30% to 60% of the building energy is consumed by air conditioning systems. Energy saving design is the most effective method to save energy. In this paper, a typical energy saving building in Beijing is selected. The dynamic energy consumption program, Energyplus, is used as a tool to analyze the heat user and the heat net, which is the important component of heating system. The energy saving method of central heating system is discussed. Further, two dynamic control models and two models of saving energy building are put forward. The software EnergyPlus, a dynamic energy consumption program developed by American Department of Energy is selected as a tool to simulate the energy saving building in this study. The Heating Period Load Dynamic Control (HPLDC) Model is put forward. The hourly weather data in the typical weather year, which is offered by ASHRAE is used. The whole heating period is divided into three parts including primal cold period and severe cold period and terminal cold period. In every period, the temperature and the heating water flux are adjusted to control the heating system. In addition, the Indoor Temperature Dynamic Adjust (ITDA) Model is put forward. According to the difference of people's activities in one day, the indoor temperature and operation parameters of fan coil are adjusted in this model. The indoor thermal environment can meet the requirement of comfort index and decrease the energy consumption during operation in the ITDA model. A family with two peoples and three peoples and four peoples are used as examples to valide the thruth of the model. EnergyPlus is used to simulate the above two control models and the efficiency of building energy consumption is analyzed. The conclusions are drawn that the building energy consumption decreases 11.6% when using the HPLDC model...