| mult |
number |
input time |
multiplier: number of identical loops |
| wlpCount |
number |
Start of run |
total # of child DHWLOOPPUMPs |
| flow |
FLOAT_GEZ |
Start of hour |
current loop recirculation max flow, gpm |
| runF |
FLOAT_GEZ |
Start of hour |
current hour recirculation operation fraction |
| tIn1 |
FLOAT_GZ |
Start of hour |
entering temperature at 1st DHWLOOPSEG |
| fUA |
FLOAT_GZ |
input time |
- UA adjustment factor for child [DHWLOOPSEGs][dhwloopseg]
- fudge factor re imperfect insulation
|
| lossMakeupPwr |
FLOAT_GEZ |
Start of hour |
- loss makeup heating (electrical) power, W
- represents heater that makes up for HRLL losses
- re central HPWH systems
|
| lossMakeupEff |
FLOAT_GZ |
Start of hour |
loss makeup heating efficiency |
| elecMtri |
TI |
input time |
- meter for loop electricity use (default = parent ws_elecMtri)
- loss makeup [DHWLOOPPUMP][dhwlooppump] electricity accumulated to end use dhwMFL
|
| segTotals |
|
|
- Aggregated totals for all child [DHWLOOPSEGs][dhwloopseg]
- count, len, vol, exArea, UA
- values DO NOT reflect wl_mult
|
SEGTOTS
| Name |
Type |
Variability |
Description/Comments |
| segTotals.count |
DBL |
Start of run |
# of segments included in totals |
| segTotals.len |
DBL |
Start of run |
length, ft |
| segTotals.vol |
DBL |
Start of run |
volume, gal |
| segTotals.exArea |
DBL |
Start of run |
outside surface area (at insulation surface), ft2 |
| segTotals.UA |
DBL |
Start of run |
fluid-to-surround loss, Btuh/F-hr |
|
| branchTotals |
|
|
- Aggregated totals for all child [DHWLOOPBRANCHs][dhwloopbranch]
- count, len, vol, exArea, UA
- values DO NOT reflect wl_mult
|
SEGTOTS
| Name |
Type |
Variability |
Description/Comments |
| branchTotals.count |
DBL |
Start of run |
# of segments included in totals |
| branchTotals.len |
DBL |
Start of run |
length, ft |
| branchTotals.vol |
DBL |
Start of run |
volume, gal |
| branchTotals.exArea |
DBL |
Start of run |
outside surface area (at insulation surface), ft2 |
| branchTotals.UA |
DBL |
Start of run |
fluid-to-surround loss, Btuh/F-hr |
|
| volRL |
number |
End of hour |
- current hour volume returned to water heater, gal
- (reflects wl_mult)
- reduced by loss makeup
|
| qLiqLP |
number |
End of hour |
heat added to liquid by DHWLOOPPUMP(s), Btu |
| HRLL |
number |
End of hour |
- current hour loop seg pipe losses, Btu
- (reflects wl_mult and reduction by wl_lossMakeupPwr)
|
| HRLLnet |
number |
End of hour |
- wl_HRLL adjusted for pump by pump heat and
- wl_lossMakeUp, Btu (reflects wl_mult)
|
| HRBL |
number |
End of hour |
- current hour branch pipe loss, Btu
- (reflects wl_mult)
|
| t24WL |
number |
End of hour |
- current hour branch waste loss volume, gal
- per T24DHW model; reflects wl_mult
- info only: associated energy is included in wl_HRBL
|
| tRL |
number |
End of hour |
- current hour average return temp, F
- derived from flow, loss, and wl_qLiqLP
- can be > wl_tIn1
- may not be same as ps_tOut of last segment
|