Baseline Office Building Comparison of GB Standard and ASHRAE Standard in Energy Modeling

In order to promote the development of China green building standard and improve the level of building energy efficiency design, in this paper, the two standards, that are China public building energy saving design standard (GB for short) and American ASHRAE 90.1, are compared with the regulations and requirements in baseline building simulation to find out the potential revision part in the China's standard. Take an office building of shanghai for example, the energy consumption is compared between the two baseline buildings which are set based on the above-mentioned standards. The total energy consumption is calculated with energy simulation software EnergyPlus. The calculation results show that the building envelope and equipment efficiency requirements of GB standard are much lower than ASHRAE 90.1, but the average air-conditioning energy consumption is almost the same in two standards, for humidity control is needed in American's air-condition system which increases the reheating energy. The research also demonstrates the lack of energy simulation regulations in GB standard, which are needed to obtain the simulation results more precisely.