DHW system assumptions for early stage-models

For some building types, domestic hot water is a significant energy end use. For these buildings, such as residential buildings, food service, hotels and hospitals, attention to domestic hot water modeling inputs is important. Typical inputs are peak hot water consumption rate, fractional schedule for consumption at each timestep and performance characteristics of the water heater. The following resources provide estimates of hot water consumption rates for different types of buildings.  

• U.S. Department of Energy Commercial Reference Building Models of the National Building Stock
• COMNET; consumption rates and schedules