6.62 towerPlant
@towerPlant[1..].
| Name | Input? | Runtime? | Type | Variability | Description |
|---|---|---|---|---|---|
| name | X | X | string | constant | – |
| ctN | X | X | integer number | autosize and simulate phase start time | Number of towers. niles’ ctno. default 1. |
| tpStg | X | X | unrecognized | autosize and simulate phase start time | Staging choice, default together. niles’ stgop. |
| tpTsSp | X | X | number | hourly | Towers delivered water setpoint temperature (niles’ twosp). degrees f, hourly, default 85f. |
| tpMtr | X | X | integer number | input time | Subscript of meter object to which tower fan energy input will be posted, |
| ctTy | X | X | unrecognized | autosize and simulate phase start time | Cooling tower fan control type choice: onespeed (default), twospeed, or variable. |
| ctLoSpd | X | X | number | autosize and simulate phase start time | Low speed for a twospeed fan, as a fraction of full cfm. default 0.5. |
| ctShaftPwr | X | X | number | autosize and simulate phase start time | Shaft power of one tower fan motor. rqd. user name ‘shaftbhp’. |
| ctMotEff | X | X | number | autosize and simulate phase start time | Motor (and drive, if any) efficiency, default 0.88 |
| ctFcOne.k[0] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcOne.k[1] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcOne.k[2] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcLo.k[0] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcLo.k[1] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcLo.k[2] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcHi.k[0] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcHi.k[1] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcHi.k[2] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcVar.k[0] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcVar.k[1] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcVar.k[2] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcVar.k[3] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctFcVar.k[4] | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| ctCapDs | X | X | number | run start time (of each phase, autoSize or simulate) | Design capacity, btuh. (replaces niles’ design water inlet temperature.) |
| ctVfDs | X | X | number | autosize and simulate phase start time | Design air flow volume rate through tower / full speed fan flow??, cfm, rqd. |
| ctGpmDs | X | X | number | run start time (of each phase, autoSize or simulate) | Design water flow rate, gpm. default: sum of connected heat rejection pump capacities / ctn. |
| ctTDbODs | X | X | number | autosize and simulate phase start time | Design outdoor drybulb temperature, f, rqd. (only needed to convert ctvfds from cfm to lb/hr). |
| ctTWbODs | X | X | number | autosize and simulate phase start time | Design outdoor wetbulb temperature, f, rqd. |
| ctTwoDs | X | X | number | autosize and simulate phase start time | Design leaving water temperature, f, default 85. |
| ctCapOd | X | X | number | run start time (of each phase, autoSize or simulate) | Off-design capacity, btuh. (replaces niles’ design water inlet temperature.) |
| ctVfOd | X | X | number | autosize and simulate phase start time | Off-design air flow volume rate through one tower, cfm, must != ctvfds. |
| ctGpmOd | X | X | number | run start time (of each phase, autoSize or simulate) | Off-design water flow rate, gpm. default: sum of connected heat rejection pump capacities/ ctn. |
| ctTDbOOd | X | X | number | autosize and simulate phase start time | Off-design outdoor drybulb temperature, f. (only needed to convert ctvfod from cfm to lb/hr). |
| ctTWbOOd | X | X | number | autosize and simulate phase start time | Off-design outdoor wetbulb temperature, f. |
| ctTwoOd | X | X | number | autosize and simulate phase start time | Off-design leaving water temperature, f, default 85. |
| ctK | X | X | number | run start time (of each phase, autoSize or simulate) | Exponent in formula ntua = const * (mw/ma)^ctk, as alternative to “off design” inputs. |
| ctStkFlFr | X | X | number | autosize and simulate phase start time | Stack effect flow: air flow that occurs thru tower when fan is off, as a fraction of ctvfds. |
| ctBldn | X | X | number | autosize and simulate phase start time | Blowdown rate: frac inflowing water bled down drain, to reduce impurities buildup. default .01. |
| ctDrft | X | X | number | autosize and simulate phase start time | Drift rate: frac inflowing water blown out of tower as droplets, w/o evaporating. default 0. |
| ctTWm | X | X | number | autosize and simulate phase start time | Temperature of water in mains, for makeup water. default 60. |
| cp1 | X | X | integer number | run start time (of each phase, autoSize or simulate) | Subscript of 1st coolplant served by this towerplant. next is coolplant.nxcp4tp. |
| hl1 | X | X | integer number | run start time (of each phase, autoSize or simulate) | Subscript of 1st hploop with hx served by this towerplant. next is hploop.nxhl4tp. |
| oneFanP | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| maDs | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| maOd | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| mwDs | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| mwOd | X | X | number | run start time (of each phase, autoSize or simulate) | – |
| maOverMwDs | X | X | number | run start time (of each phase, autoSize or simulate) | Mads/mwds, precomputed in setup. |
| ntuADs | X | X | number | run start time (of each phase, autoSize or simulate) | Number of transfer units for air side at design conditions (niles ntuad) |
| ntuAOd | X | X | number | run start time (of each phase, autoSize or simulate) | .. at off-design conditions, if given. member only as debug aid. |
| tpTs | X | X | number | end of each subhour | – |
| tpClf | X | X | integer number | end of each subhour | Call-flag: set nz if must call tpcompute so it can test tr, etc to see if computation needed. |
| tpPtf | X | X | integer number | end of each subhour | Compute-flag: set if must call tpcompute and it should unconditionally recompute. |
| trNx | X | X | number | end of each subhour | – |
| mwAllNx | X | X | number | end of each subhour | – |
| qLoadNx | X | X | number | end of each subhour | – |
| tr | X | X | number | end of each subhour | – |
| mwAll | X | X | number | end of each subhour | – |
| qLoad | X | X | number | end of each subhour | – |
| mwi1 | X | X | number | end of each subhour | – |
| qNeed | X | X | number | end of each subhour | – |
| qMax1 | X | X | number | end of each subhour | – |
| qMin1 | X | X | number | end of each subhour | – |
| towldCase | X | X | unrecognized | end of each subhour | Tower load case, tpcompute to endsubhr: facilitates deferring fan power calc |
| qMaxGuess | X | X | number | end of each subhour | For internal values for towmodel initial guess at next call for various towmodel calls. |
| qMinGuess | X | X | number | end of each subhour | .. |
| qLoGuess | X | X | number | end of each subhour | .. |
| qVarGuess | X | X | number | end of each subhour | .., used via varspeedf |
| qVarTem | X | X | number | end of each subhour | – |
| puteTs | X | X | number | end of each subhour | – |
| nCtOp | X | X | integer number | end of each subhour | Number of tower fans operating |
| f | X | X | number | end of each subhour | Fraction of full speed (fraction on for one speed fan), for lead tower only if lead. |
| fanP | X | X | number | end of each subhour | Plant’s fan input pwr this subhour (btuh!) |
| q | X | X | number | end of each subhour | Power imparted to water, for change detection/probes/reports 10-19-92 |
| tpTsSpPr | X | X | number | end of each subhour | For tpestimate |
| tpTsEstPr | X | X | number | end of each subhour | For tpestimate |
| tpTsPr | X | X | number | end of each subhour | Leaving water temp at last tpcompute, f (unused?) |
| tDbOShPr | X | X | number | end of each subhour | Outdoor drybulb temp at last tpcompute, f |
| wOShPr | X | X | number | end of each subhour | Outdoor humidity ratio at last tpcompute, f |