Definition of Exponential Function. An Exponential Function is a function of the form y = abx, where both a and b are greater than 0 and b is not equal to 1. Exponential Decay. Exponential decay occurs when a quantity decreases by the same proportion r in each time period t.
A vent damper is an automatic devise that shuts off the flue pipe when the burner is not running. A vent damper has no effect on the running efficiency of the appliance. It only saves off-cycle losses of heated air. Therefore, if the appliance is in an unheated space, there is no benefit to a vent damper. A vent damper can achieve up to 10% annual fuel savings.
damper block, piano damper (noun) damper consisting of a small felted block that drops onto a piano string to stop its vibration