Quote:
Originally Posted by biker1
I am glad to see that you have some understanding of wind chill. However, why you would set your freeze protection device to come on at 39F and then indicate you did this to allow for wind chill is a mystery. You don't need to allow for wind chill. Now, there can be some issues with evaporative cooling and shallow water depths but that would also require a large dew point depression.
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The only time I ever had a pipe freeze was when there was a strong wind blowing against a building I owned. It cooled down the pipe in the exterior wall overnight and the pipe froze. Without the wind, I think the morning temperature increase would have prevented the freezing. So, I think that the wind chill can be a factor in pipes freezing.