The Time-Temperature Curve is something that we have seen in textbooks for many years. Many people do not know that the original time-temperature curve dates back to around 1908. The graph depicts the stages of fire growth in time showing how temperature increases and decreases throughout the stages of development. Due to research on modern fire behavior we now use a different style time-temperature curve. The new time-temp curve shows something called ventilation limited conditions which depicts how temperature will drop due to the limited oxygen rather than the limited fuel. This is a common occurrence in modern fires due to newer construction techniques and newer products which provide much more fuel for combustion.
Take a look at the video below which will explain the differences in the two time-temp curves. We will also explain the differences between fuel limited and vent limited fires.