Tool for Generating Realistic Residential Hot Water Event Schedules: Preprint

Research output: Contribution to conferencePaper


The installed energy savings for advanced residential hot water systems can depend greatly on detailed occupant use patterns. Quantifying these patterns is essential for analyzing measures such as tankless water heaters, solar hot water systems with demand-side heat exchangers, distribution system improvements, and recirculation loops. This paper describes the development of an advancedspreadsheet tool that can generate a series of year-long hot water event schedules consistent with realistic probability distributions of start time, duration and flow rate variability, clustering, fixture assignment, vacation periods, and seasonality. This paper also presents the application of the hot water event schedules in the context of an integral-collector-storage solar water heatingsystem in a moderate climate.
Original languageAmerican English
Number of pages11
StatePublished - 2010
EventSimBuild 2010 - New York, New York
Duration: 15 Aug 201019 Aug 2010


ConferenceSimBuild 2010
CityNew York, New York

NREL Publication Number

  • NREL/CP-550-47685


  • demand-side heat exchanger
  • occupant use
  • recirculation loop
  • residential hot water


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