[bldg-sim] Data source for cold water inlet temperatures

[Simon J Rees <sjrees@xxxxxxxxxxx>]

Jason

You might want to look at:
Kusuda, T., P.R. Achenbach (1965), Earth Temperature and Thermal Diffusivities at Selected Stations in the United States. ASHRAE Transactions.

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.
Simon

At 04:11 PM 12/23/2002, you wrote:
>I'm looking for a data source for typical inlet water 
>temperatures (water main temperature) for residential 
>service water heaters for locations in the United States.  
>This is roughly equivalent to the ground temperature at 6 
>to 8 feet depth. The temperature varies seasonally so 
>knowing the average monthly value would be best.  
>
>I am already aware of two sources of data that don't really 
>help: Engineering Weather Data from NCDC has the 50 ft 
>temperature and the map in the old ASHRAE Load Calculation 
>Manual is for depths of 4 inches. 
>
>Any leads would be appreciated.
>
>Jason
>
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