DHWUse

Name Type Variability Description/Comments
hwEndUse choice:DHWEU input time
  • hot water end use
  • 0 = unknown
  • C_DHWEUCH_FAUCET, _SHOWER, _BATH, _CWASHR, _DWASHR
eventID SI_GEZ input time
  • user-defined index that identifies [DHWUSEs][dhwuse] belonging to a single
  • event (e.g. all [DHWUSEs][dhwuse] of a clotheswasher cycle).
  • Used re allocation of [DHWUSEs][dhwuse] to multiple water heaters.
  • Input values are *at fixture*
start FLOAT_GEZ Start of hour draw starting hour of day, 0 - 23.999
dur FLOAT_GEZ Start of hour flow duration, min
flow FLOAT_GEZ Start of hour mixed flow rate, gpm
hotF number Start of hour
  • fraction hot water, default = 1
  • input value used iff wu_temp NOT given
temp FLOAT_GZ Start of hour
  • use temperature, F. If given,
  • hot water draw is calculated assuming
  • cold water mixing (mains or from heat rec)
heatRecEF FLOAT_GEZ Start of hour
  • heat recovery effectiveness
  • re local drain water heat exchange
  • Must be 0 for C_DHWEUCH_SHOWER if [DHWSYS][dhwsys] has [DHWHEATREC][dhwheatrec].
  • Checked at runtime only since [DHWDAYUSE][dhwdayuse] use by [DHWSYS][dhwsys]
  • can change daily.
drawSeqN number Start of run
  • sequence number of draw by ws_hwEndUse
  • assigned at runtime, see wdu_RunInit()
  • used re random assignment of draws to [DHWHEATRECs][dhwheatrec]