4.43 DHWSOLARCOLLECTOR
Solar Collector Array. May be multiple collectors on the same DHWSOLARSYS system. All inlets come from the DHWSOLARTANK.
Uses SRCC Ratings.
scArea=float
Collector area.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| ft^2 | \(>\) 0 | 0 | Yes | constant |
scMult
Number of identical collectors, default 1
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| \(>\) 0 | 1 | No | constant |
scTilt=float
Array tilt.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| deg | 0 | Yes | constant |
scAzm=float
Array azimuth.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| deg | 0 | Yes | constant |
scFRUL=float
Fit slope
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| Btuh/ft2-o^F | -0.727 | No | constant |
scFRTA=float
Fit y-intercept
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| none | \(>\) 0 | 0.758 | No | constant |
scTestMassFlow=flaot
Mass flow rate for collector loop SRCC rating.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| lb/h-ft2 | x \(>\) 0 | 14.79 | No | constant |
scKta60=float
Incident angle modifier at 60 degree, from SRCC rating.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| x \(\geq\) 0 | 0.72 | No | constant |
scOprMassFlow=float
Collector loop operating mass flow rate.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| lb/h-ft2 | x \(>\) 0 | 0.0 | No | constant |
scPipingLength=float
Collector piping length.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| ft | x \(\geq\) 0 | 0.0 | No | Hourly and at the end of interval |
scPipingInsulK=float
Collector piping insulation conductivity.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| x \(>\) 0 | 0.02167 | No | Hourly and at the end of interval |
scPipingInsulThk=float
Collector piping insulation thickness.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| x \(\geq\) 0 | 1.0 | No | Hourly and at the end of interval |
scPipingExH=float
Collector piping heat transfer coefficient.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| x \(>\) 0 | 1.5 | No | Hourly and at the end of interval |
scPipingExT=float
Collector piping surround temperature.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| oF | x \(\geq\) 32 | 70.0 | No | hourly |
scPumpPwr=float
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| Btu/h | x \(\ge\) 0 | from scPumpflow | No | constant |
scPumpLiqHeatF=float
Fraction of scPumpPwr added to liquid stream, the remainder is discarded.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| x \(\geq\) 0 | 1.0 | No | Every run |
scPumpOnDeltaT=float
Temperature difference between the tank and collector outlet where pump turns on
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| oF | 10.0 | No | constant |
scPumpOffDeltaT=float
Temperature difference between the tank and collector outlet where pump turns off
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| oF | 5.0 | No | constant |
endDHWSOLARCOLLECTOR
Optionally indicates the end of the DHWSOLARCOLLECTOR definition.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| none | No |