Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Try using the Site:WaterMainsTempearture (http://bigladdersoftware.com/epx/docs/8-3/input-output-reference/group-location-climate-weather-file-access.html#sitewatermainstemperature) object. You can use the correlation input to have EnergyPlus calculate what the inlet water temperature should be.
| | 2 | No.2 Revision |
Try using the Site:WaterMainsTempearture (http://bigladdersoftware.com/epx/docs/8-3/input-output-reference/group-location-climate-weather-file-access.html#sitewatermainstemperature) Site:WaterMainsTempearture object. You can use the correlation input to have EnergyPlus calculate what the inlet water temperature should be.
| | 3 | No.3 Revision |
Try using the Site:WaterMainsTempearture object. You can use the correlation input Calculation Method = "Correlation" to have EnergyPlus calculate what the inlet water temperature should be.based on the outdoor temperatures of your climate.
| | 4 | No.4 Revision |
Try using the Site:WaterMainsTempearture object. You can use Calculation Method = "Correlation" to have EnergyPlus calculate what the inlet water temperature based on the outdoor temperatures of your climate.
The article you reference seems to be a similar correlation (E3.3) that uses the Kusuda-Achenbach equation with an assumed depth of 10ft. This correlation was originally intended for undisturbed ground temperatures (i.e. ground far away from buildings).
The EnergyPlus correlation is based on work developed by Christensen and Burch based on actual water mains temperatures. You can see that the correlations actually have a very similar form.
| | 5 | No.5 Revision |
Try using the Site:WaterMainsTempearture object. You can use Calculation Method = "Correlation" to have EnergyPlus calculate what the inlet water temperature based on the outdoor temperatures of your climate.
The article you reference seems to be a similar correlation (E3.3) that uses the Kusuda-Achenbach equation with an assumed depth of 10ft. This correlation was originally intended for undisturbed ground temperatures (i.e. ground far away from buildings).
The EnergyPlus correlation is based on work developed by Christensen and Burch based on actual water mains temperatures. You can see that the correlations actually have a very similar form.form, but I'd generally trust the EnergyPlus correlation over the other.
