Heat Release Rate (HRR) is a measure of the amount of heat energy released during a combustion process, typically expressed in kilowatts (kW). It is an important factor in fire safety, as it helps to determine how quickly a fire can grow and how much heat it can produce. Understanding HRR is crucial for designing buildings and fire protection systems. HRR can be influenced by various factors, including the type of fuel being burned, the availability of oxygen, and the configuration of the burning material. Accurate measurement of HRR is essential for evaluating fire behavior and developing effective firefighting strategies, ensuring the safety of both people and property in the event of a fire.