Zone Name 1TopFloor:Zone1
Schedule Name 2
Design Flow Rate 1
Minimum Zone Temperature when Cooling -10
Maximum Zone Temperature when Heating 30
Delta Temperature 0.1
Earthtube Type INTAKE
Fan Pressure Rise 400
Fan Total Efficiency .9
Pipe Radius .2032
Pipe Thickness 0.0100000000152
Pipe Length 30.48
Pipe Thermal Conductivity 49.9999999996
Pipe Depth Under Ground Surface 2.4384
Soil Condition HeavyAndDamp
Average Soil Surface Temperature 9.760938644409
Amplitude of Soil Surface Temperature 14.012404441833
Phase Constant of Soil Surface Temperature 19
Constant Term Flow Coefficient .606
Temperature Term Flow Coefficient .020199999
Velocity Term Flow Coefficient .00059800001
Velocity Squared Term Flow Coefficient 0
Jeremiah D. Crossett | Senior Analyst | Phase Change Energy Solutions
120 E. Pritchard St. | Asheboro, NC 27203 | Mobile 503-688-8951
On Sat, Jul 13, 2013 at 1:34 AM, Dolf Bakker <dolfbakker@xxxxxxxxx> wrote:
Hello Jermiah,There is an example file availabe. EarthTubeSimpleTest.idfalso, have a look at this fileCheers,DolfOn Sat, Jul 13, 2013 at 8:44 AM, Jeremiah Crossett <jcrossett@xxxxxxxxxxxxxxx> wrote:
Dear list,
I still am not finding any reason this earth tube is not working> Am I suppose to connect it to the HVAC system using nodes? The documentation does not specify so it seems unlikely.. Attached is the file, any help would be very appreciated. Interestingly, the outputs for earth tube reporting do not cause a warning, so apparently the model is doing something, just not anything useful...Thanks for any help on this one and kind regards.
Jeremiah D. Crossett | Senior Analyst | Phase Change Energy Solutions120 E. Pritchard St. | Asheboro, NC 27203 | Mobile 503-688-8951
On Fri, Jul 12, 2013 at 7:52 PM, Jeremiah Crossett <jcrossett@xxxxxxxxxxxxxxx> wrote:
Hello,My model with earth tube cooling is not showing any results from earth tube output variables. The inputs I am using seem reasonable and I have read the reference Is this object suppose to connect to the HVAC with nodes? I can send the IDF if anyone is willing to take a look and have pasted the object below.Zone Name 1TopFloor:Zone1Schedule Name 2Design Flow Rate 1.83002825566061E-02Minimum Zone Temperature when Cooling 22Maximum Zone Temperature when Heating 21Delta Temperature 1Earthtube Type INTAKEFan Pressure Rise 350.0Fan Total Efficiency 1Pipe Radius 0.304800000001219Pipe Thickness 0.02Pipe Length 30.4800000001219Pipe Thermal Conductivity 200.0Pipe Depth Under Ground Surface 3.5Soil Condition HeavyAndDampAverage Soil Surface Temperature 9.760938644409Amplitude of Soil Surface Temperature 14.012404441833Phase Constant of Soil Surface Temperature 19Constant Term Flow Coefficient 1Temperature Term Flow Coefficient 0Velocity Term Flow Coefficient 0Velocity Squared Term Flow Coefficient 0
Jeremiah D. Crossett | Senior Analyst | Phase Change Energy Solutions120 E. Pritchard St. | Asheboro, NC 27203 | Mobile 503-688-8951
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