Tonnage reduction with temperature falling

NW Mailing List nw-mailing-list at
Mon Dec 17 07:46:20 EST 2018

On 12/16/2018 10:01 PM, NW Mailing List via NW-Mailing-List wrote:
> I was under the impression that the reason the tonnage went down with 
> temperature was thermodynamics of water evaporation to get the needed 
> pressures of steam. The point about oil and grease viscosity makes 
> good sense as well.
> Mike Shockley

Not so, Mike. The following chart is from Shenandoah Div. ETT #5 
effective Sunday, May 20, 1973.

Jimmy Lisle

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