DHWSOLARSYS¶
Solar water heating system.
- DHWSOLARSYS
- DHWSOLARCOLLECTOR
May have any number of solar collectors. The tank is built into DHWSOLARSYS itself (not a separate subobject), is always present, and there is exactly one per DHWSOLARSYS.
swElecMtr¶
Type: mtrName
Name of METER object, if any, to which DHWSOLARSYS electrical energy use is recorded (under end use given by swEndUse, which defaults to "DHW").
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| °F | name of a METER | not recorded | No | constant |
swSCFluidSpHt¶
Type: float
Specific heat for the collector fluid.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| Btu/lbm-°F | x > 0 | 0.9 | No | constant |
swSCFluidDens¶
Type: float
Density for the collector fluid.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| lb/ft3 | x > 0 | 64.0 | No | constant |
swEndUse¶
End use of pump energy; defaults to "DHW".
swParElec¶
Type: float
Parasitic electricity use (e.g. controller standby power), recorded under swEndUse to the meter given by swElecMtr, if any.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| W | x ≥ 0 | 0 | No | hourly |
swTankHXEff¶
Type: float
Tank heat exchanger effectiveness.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| 0 ≤ x ≤ 0.99 | 0 | No | hourly |
swTankTHxLimit¶
Type: float
Temperature limit for the tank collector.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| °F | x ≥ 0 | 180.0 | No | constant |
swTankUA¶
Type: float
Heat transfer coefficient for the tank multiplied by area.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| Btuh/°F | No | constant |
swTankVol¶
Type: float
Solar storage tank volume.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| gal | x > 0 | 1.5 gal per ft2 of total collector area | No | constant |
swTankInsulR¶
Type: float
Total tank insulation resistance, built-in plus exterior wrap.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| ft2-°F/Btuh | No | constant |
swTankZone¶
Type: znName
Pointer to tank zone location, use sw_tankTEx if NULL
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| Name of ZONE | No | constant |
swTankTEx¶
Type: float
Surrounding temperature.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| °F | No | hourly |
endDHWSOLARSYS¶
Optionally indicates the end of the DHWSOLARSYS definition.
| Units | Legal Range | Default | Required | Variability |
|---|---|---|---|---|
| none | No |