What is the Net Stack Temperature measured as?

The Net Stack Temperature is calculated by taking the Flue Gas Temperature and subtracting the Ambient Temperature. This measurement is crucial for assessing the efficiency of a combustion appliance, as it shows how much heat is being lost through the exhaust compared to the surrounding air. By using this formula, it helps technicians understand the performance of heating systems, as well as to identify any potential issues that could arise from excessive heat loss. The importance of using the difference between these two temperatures lies in its ability to reflect the true operational efficiency of the appliance, making this method the standard practice in the industry.