| 요약2 |
Dynamic modeling of an existing building as operated requires much more efforts, insights and understanding than dynamic modeling of that as designed. This paper will report, how the authors (modelers) developed a dynamic energy simulation model for a large office building (33 stories above ground and 6 underground levels, a total floor area of 91,898.28 m2). The simulation project, inclusive of modeling, calibration and validation, was finished within a tight time schedule (2 months) by four people (1 M.S. and 3 Ph.D. students). It is widely known that even the most advanced simulation tool can’t simulate as operated the complex physical heat and mass transport phenomena in a building, and complex relationship between mechanical systems and components. In the paper, the following issues will be elaborated: (1) gathering building information (architectural, mechanical, electrical, schedules, hourly climate, etc.), (2) handling disagreement between construction documents and a reality, (3) dealing with absent (unknown) and uncertain inputs, and (4) tweaking the simulation model when the tool can’t simulate as it is. Finally, the paper will show the comparison between the simulation prediction and measured energy use. |