[BLDG-SIM] Inlet water temperatures

[Rich Brown]

For the purposes of modeling residential water heating energy use,
can anyone suggest a source for annual average water inlet temps
(from the municipal water system)?
I've been using the annual average outdoor dry-bulb (offset by a few 
degrees)
or estimated shallow ground temperatures in the TMY2 files, but these 
don't
seem to give plausible values in cold climates like Alaska
(annual averages are well below freezing, even at 4m depth).
(a related question might be how they get piped water in places with 
ground
temperatures that low).

thanks,
Rich Brown
---------------------------------------------------------------
Rich Brown                              * REBrown at lbl.gov
Energy Analysis Department	            * Phone: (510) 486-5896
Lawrence Berkeley National Laboratory   * Fax:   (510) 486-4247
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