In vapors being captured, what is typically measured to assess performance?

To assess the performance of vapor recovery systems, measuring hydrocarbon concentration is essential. This measurement indicates the efficiency with which the system captures and recycles vapors released during the transfer and storage of liquid fuels. Higher hydrocarbon concentrations in the captured vapors suggest that the system is effectively controlling emissions and minimizing environmental impact.

Monitoring hydrocarbon concentration can help identify issues such as leaks or inefficiencies in the recovery process. By ensuring that the concentration levels are within specified regulatory limits, operators can demonstrate compliance with environmental standards and reduce the risk of air pollution.

While factors like oxygen levels, water content, and temperature can affect the overall vapor recovery process, they do not directly provide a clear or specific measure of the system's performance in capturing and processing hydrocarbons. Therefore, hydrocarbon concentration is the most relevant parameter for evaluating the effectiveness of vapor recovery systems.