<html>
Full citation is:<br><br>
Kusuda, T., and P.R. Achenbach. 1965. Earth Temperature and Thermal
Diffusivity at Selected Stations in the United States. <i>ASHRAE
Transactions.</i> 71(1):61-75.<br><br>
Bill<br><br>
At 04:55 PM 12/23/2002 -0600, Simon J Rees wrote:<br>
<blockquote type=cite class=cite cite>Jason<br><br>
You might want to look at:<br>
Kusuda, T., P.R. Achenbach (1965), Earth Temperature and Thermal
Diffusivities at Selected Stations in the United States. ASHRAE
Transactions.<br><br>
This gives a model that allows you to calculated temps at different
depths near the surface, and the variation through the year. Sorry but I
don't have the volume and page numbers.<br>
Simon<br><br>
At 04:11 PM 12/23/2002, you wrote:<br>
>I'm looking for a data source for typical inlet water <br>
>temperatures (water main temperature) for residential <br>
>service water heaters for locations in the United States.
<br>
>This is roughly equivalent to the ground temperature at 6 <br>
>to 8 feet depth. The temperature varies seasonally so <br>
>knowing the average monthly value would be best. <br>
><br>
>I am already aware of two sources of data that don't really <br>
>help: Engineering Weather Data from NCDC has the 50 ft <br>
>temperature and the map in the old ASHRAE Load Calculation <br>
>Manual is for depths of 4 inches. <br>
><br>
>Any leads would be appreciated.<br>
><br>
>Jason<br>
><br>
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